/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_amount10_file-60.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:43:42,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:43:42,993 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 12:43:42,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:43:42,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:43:43,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:43:43,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:43:43,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:43:43,014 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:43:43,014 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:43:43,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:43:43,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:43:43,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:43:43,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:43:43,015 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:43:43,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:43:43,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:43:43,016 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:43:43,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:43:43,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:43:43,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:43:43,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:43:43,019 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:43:43,019 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:43:43,019 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:43:43,019 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:43:43,019 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:43:43,020 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:43:43,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:43:43,020 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:43:43,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:43:43,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:43:43,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:43:43,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:43:43,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:43:43,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:43:43,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:43:43,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:43:43,021 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:43:43,021 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:43:43,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:43:43,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:43:43,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:43:43,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:43:43,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:43:43,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:43:43,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:43:43,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:43:43,212 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:43:43,212 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:43:43,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-60.i [2024-11-03 12:43:44,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:43:44,544 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:43:44,545 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-60.i [2024-11-03 12:43:44,551 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ec3bec3/d0fc7d9d7be84c639abf55452843ef73/FLAGe28585604 [2024-11-03 12:43:44,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ec3bec3/d0fc7d9d7be84c639abf55452843ef73 [2024-11-03 12:43:44,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:43:44,971 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:43:44,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:43:44,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:43:44,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:43:44,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:43:44" (1/1) ... [2024-11-03 12:43:44,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f51f986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:44, skipping insertion in model container [2024-11-03 12:43:44,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:43:44" (1/1) ... [2024-11-03 12:43:44,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:43:45,103 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_amount10_file-60.i[915,928] [2024-11-03 12:43:45,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:43:45,131 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:43:45,138 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_amount10_file-60.i[915,928] [2024-11-03 12:43:45,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:43:45,162 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:43:45,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45 WrapperNode [2024-11-03 12:43:45,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:43:45,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:43:45,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:43:45,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:43:45,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,189 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 77 [2024-11-03 12:43:45,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:43:45,190 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:43:45,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:43:45,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:43:45,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,206 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 12:43:45,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,212 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:43:45,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:43:45,220 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:43:45,220 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:43:45,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (1/1) ... [2024-11-03 12:43:45,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:43:45,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:43:45,241 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 12:43:45,242 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 12:43:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:43:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:43:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:43:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:43:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:43:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:43:45,308 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:43:45,309 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:43:45,452 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-03 12:43:45,452 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:43:45,460 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:43:45,460 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:43:45,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:43:45 BoogieIcfgContainer [2024-11-03 12:43:45,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:43:45,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:43:45,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:43:45,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:43:45,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:43:44" (1/3) ... [2024-11-03 12:43:45,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fa1c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:43:45, skipping insertion in model container [2024-11-03 12:43:45,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:43:45" (2/3) ... [2024-11-03 12:43:45,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fa1c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:43:45, skipping insertion in model container [2024-11-03 12:43:45,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:43:45" (3/3) ... [2024-11-03 12:43:45,469 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-60.i [2024-11-03 12:43:45,480 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:43:45,480 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:43:45,521 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:43:45,525 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;@4e5004e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:43:45,525 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:43:45,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-03 12:43:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-03 12:43:45,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:43:45,534 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:43:45,534 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:43:45,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:43:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash 971633535, now seen corresponding path program 1 times [2024-11-03 12:43:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:43:45,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11472731] [2024-11-03 12:43:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:43:45,545 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:43:45,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:43:45,546 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 12:43:45,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:43:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:43:45,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:43:45,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:43:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-03 12:43:45,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:43:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-03 12:43:45,724 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:43:45,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11472731] [2024-11-03 12:43:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [11472731] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:43:45,724 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:43:45,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:43:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431680880] [2024-11-03 12:43:45,726 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:43:45,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:43:45,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:43:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:43:45,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:43:45,749 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:43:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:43:45,769 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2024-11-03 12:43:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:43:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2024-11-03 12:43:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:43:45,776 INFO L225 Difference]: With dead ends: 73 [2024-11-03 12:43:45,776 INFO L226 Difference]: Without dead ends: 36 [2024-11-03 12:43:45,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 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 12:43:45,783 INFO L432 NwaCegarLoop]: 49 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, 49 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 12:43:45,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:43:45,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-03 12:43:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-03 12:43:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-03 12:43:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions. [2024-11-03 12:43:45,827 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 78 [2024-11-03 12:43:45,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:43:45,828 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 49 transitions. [2024-11-03 12:43:45,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:43:45,828 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2024-11-03 12:43:45,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-03 12:43:45,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:43:45,831 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:43:45,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 12:43:46,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:43:46,033 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:43:46,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:43:46,034 INFO L85 PathProgramCache]: Analyzing trace with hash -483648641, now seen corresponding path program 1 times [2024-11-03 12:43:46,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:43:46,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498381275] [2024-11-03 12:43:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:43:46,035 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:43:46,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:43:46,036 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 12:43:46,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:43:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:43:46,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 12:43:46,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:43:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 12:43:47,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:43:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 12:43:48,318 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:43:48,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498381275] [2024-11-03 12:43:48,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1498381275] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:43:48,318 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:43:48,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2024-11-03 12:43:48,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985542262] [2024-11-03 12:43:48,318 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:43:48,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 12:43:48,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:43:48,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 12:43:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-03 12:43:48,320 INFO L87 Difference]: Start difference. First operand 36 states and 49 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:43:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:43:48,522 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2024-11-03 12:43:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 12:43:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2024-11-03 12:43:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:43:48,524 INFO L225 Difference]: With dead ends: 80 [2024-11-03 12:43:48,524 INFO L226 Difference]: Without dead ends: 78 [2024-11-03 12:43:48,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-03 12:43:48,525 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 60 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 12:43:48,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 245 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 12:43:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-03 12:43:48,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2024-11-03 12:43:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.131578947368421) internal successors, (43), 39 states have internal predecessors, (43), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 12:43:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2024-11-03 12:43:48,541 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 78 [2024-11-03 12:43:48,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:43:48,541 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2024-11-03 12:43:48,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:43:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2024-11-03 12:43:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-03 12:43:48,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:43:48,543 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:43:48,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 12:43:48,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:43:48,749 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:43:48,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:43:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash -481801599, now seen corresponding path program 1 times [2024-11-03 12:43:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:43:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237210054] [2024-11-03 12:43:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:43:48,750 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:43:48,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:43:48,753 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 12:43:48,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:43:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:43:48,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 12:43:48,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:43:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 12:43:50,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:43:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 12:43:50,663 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:43:50,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237210054] [2024-11-03 12:43:50,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [237210054] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:43:50,663 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:43:50,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2024-11-03 12:43:50,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614334192] [2024-11-03 12:43:50,663 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:43:50,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 12:43:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:43:50,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 12:43:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-03 12:43:50,665 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-03 12:43:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:43:51,308 INFO L93 Difference]: Finished difference Result 150 states and 199 transitions. [2024-11-03 12:43:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 12:43:51,308 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 78 [2024-11-03 12:43:51,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:43:51,312 INFO L225 Difference]: With dead ends: 150 [2024-11-03 12:43:51,312 INFO L226 Difference]: Without dead ends: 148 [2024-11-03 12:43:51,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-03 12:43:51,313 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 127 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 12:43:51,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 461 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 12:43:51,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-03 12:43:51,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 56. [2024-11-03 12:43:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 12:43:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-11-03 12:43:51,332 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 78 [2024-11-03 12:43:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:43:51,332 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-11-03 12:43:51,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-03 12:43:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-11-03 12:43:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-03 12:43:51,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:43:51,334 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:43:51,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-03 12:43:51,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:43:51,535 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:43:51,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:43:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1291358721, now seen corresponding path program 1 times [2024-11-03 12:43:51,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:43:51,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951256404] [2024-11-03 12:43:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:43:51,539 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:43:51,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:43:51,540 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 12:43:51,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 12:43:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:43:51,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 12:43:51,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:43:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 12:43:52,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:43:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 12:43:56,578 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:43:56,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951256404] [2024-11-03 12:43:56,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1951256404] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:43:56,578 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:43:56,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2024-11-03 12:43:56,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168563407] [2024-11-03 12:43:56,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:43:56,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 12:43:56,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:43:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 12:43:56,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-03 12:43:56,580 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-03 12:44:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:44:02,303 INFO L93 Difference]: Finished difference Result 117 states and 155 transitions. [2024-11-03 12:44:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 12:44:02,304 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 78 [2024-11-03 12:44:02,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:44:02,306 INFO L225 Difference]: With dead ends: 117 [2024-11-03 12:44:02,306 INFO L226 Difference]: Without dead ends: 115 [2024-11-03 12:44:02,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-03 12:44:02,307 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 57 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-03 12:44:02,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 326 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-03 12:44:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-03 12:44:02,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 59. [2024-11-03 12:44:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 12:44:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2024-11-03 12:44:02,318 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 78 [2024-11-03 12:44:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:44:02,319 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2024-11-03 12:44:02,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-03 12:44:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2024-11-03 12:44:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-03 12:44:02,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:44:02,320 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:02,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 12:44:02,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:02,524 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:44:02,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:44:02,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1293205763, now seen corresponding path program 1 times [2024-11-03 12:44:02,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:44:02,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916857932] [2024-11-03 12:44:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:44:02,525 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:44:02,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:02,526 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:44:02,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 12:44:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:44:02,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 12:44:02,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:44:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-03 12:44:02,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:44:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-03 12:44:03,074 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:44:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916857932] [2024-11-03 12:44:03,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [916857932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:44:03,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:44:03,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2024-11-03 12:44:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219475910] [2024-11-03 12:44:03,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:44:03,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 12:44:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:44:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 12:44:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-03 12:44:03,076 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-03 12:44:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:44:03,589 INFO L93 Difference]: Finished difference Result 189 states and 251 transitions. [2024-11-03 12:44:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 12:44:03,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 78 [2024-11-03 12:44:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:44:03,591 INFO L225 Difference]: With dead ends: 189 [2024-11-03 12:44:03,592 INFO L226 Difference]: Without dead ends: 133 [2024-11-03 12:44:03,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-11-03 12:44:03,593 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 37 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 12:44:03,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 150 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 12:44:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-03 12:44:03,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2024-11-03 12:44:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 68 states have internal predecessors, (71), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-03 12:44:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 143 transitions. [2024-11-03 12:44:03,618 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 143 transitions. Word has length 78 [2024-11-03 12:44:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:44:03,618 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 143 transitions. [2024-11-03 12:44:03,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-03 12:44:03,618 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 143 transitions. [2024-11-03 12:44:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-03 12:44:03,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:44:03,620 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:44:03,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-03 12:44:03,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:03,821 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:44:03,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:44:03,821 INFO L85 PathProgramCache]: Analyzing trace with hash 287456292, now seen corresponding path program 1 times [2024-11-03 12:44:03,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:44:03,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446797507] [2024-11-03 12:44:03,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:44:03,822 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:44:03,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:03,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:44:03,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 12:44:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:44:03,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-03 12:44:03,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:44:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-03 12:44:04,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:44:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-03 12:44:07,721 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:44:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446797507] [2024-11-03 12:44:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1446797507] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 12:44:07,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 12:44:07,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-03 12:44:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109739665] [2024-11-03 12:44:07,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 12:44:07,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 12:44:07,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:44:07,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 12:44:07,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-03 12:44:07,723 INFO L87 Difference]: Start difference. First operand 108 states and 143 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:44:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:44:07,976 INFO L93 Difference]: Finished difference Result 111 states and 146 transitions. [2024-11-03 12:44:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 12:44:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 153 [2024-11-03 12:44:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:44:07,977 INFO L225 Difference]: With dead ends: 111 [2024-11-03 12:44:07,977 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 12:44:07,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 292 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-03 12:44:07,978 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 14 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 12:44:07,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 245 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 12:44:07,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 12:44:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 12:44:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 12:44:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 12:44:07,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2024-11-03 12:44:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:44:07,979 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 12:44:07,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 12:44:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 12:44:07,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 12:44:07,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 12:44:07,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 12:44:08,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:44:08,185 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-03 12:44:08,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 12:44:14,547 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 12:44:14,554 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2024-11-03 12:44:14,557 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2024-11-03 12:44:14,557 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 12:44:14,567 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 12:44:14,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 12:44:14 BoogieIcfgContainer [2024-11-03 12:44:14,570 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 12:44:14,570 INFO L158 Benchmark]: Toolchain (without parser) took 29599.45ms. Allocated memory was 328.2MB in the beginning and 690.0MB in the end (delta: 361.8MB). Free memory was 285.6MB in the beginning and 468.8MB in the end (delta: -183.3MB). Peak memory consumption was 409.2MB. Max. memory is 8.0GB. [2024-11-03 12:44:14,570 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 223.3MB. Free memory is still 170.5MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 12:44:14,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.40ms. Allocated memory is still 328.2MB. Free memory was 285.0MB in the beginning and 271.4MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2024-11-03 12:44:14,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.10ms. Allocated memory is still 328.2MB. Free memory was 271.4MB in the beginning and 269.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-11-03 12:44:14,571 INFO L158 Benchmark]: Boogie Preprocessor took 29.00ms. Allocated memory is still 328.2MB. Free memory was 269.8MB in the beginning and 267.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 12:44:14,571 INFO L158 Benchmark]: RCFGBuilder took 241.33ms. Allocated memory is still 328.2MB. Free memory was 267.2MB in the beginning and 254.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2024-11-03 12:44:14,571 INFO L158 Benchmark]: TraceAbstraction took 29105.81ms. Allocated memory was 328.2MB in the beginning and 690.0MB in the end (delta: 361.8MB). Free memory was 253.6MB in the beginning and 468.8MB in the end (delta: -215.3MB). Peak memory consumption was 376.7MB. Max. memory is 8.0GB. [2024-11-03 12:44:14,574 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 223.3MB. Free memory is still 170.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.40ms. Allocated memory is still 328.2MB. Free memory was 285.0MB in the beginning and 271.4MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.10ms. Allocated memory is still 328.2MB. Free memory was 271.4MB in the beginning and 269.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.00ms. Allocated memory is still 328.2MB. Free memory was 269.8MB in the beginning and 267.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 241.33ms. Allocated memory is still 328.2MB. Free memory was 267.2MB in the beginning and 254.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 29105.81ms. Allocated memory was 328.2MB in the beginning and 690.0MB in the end (delta: 361.8MB). Free memory was 253.6MB in the beginning and 468.8MB in the end (delta: -215.3MB). Peak memory consumption was 376.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.7s, OverallIterations: 6, TraceHistogramMax: 24, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 312 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 295 mSDsluCounter, 1476 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1138 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 675 IncrementalHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 338 mSDtfsCounter, 675 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1095 GetRequests, 1023 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=5, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 192 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1074 ConstructedInterpolants, 21 QuantifiedInterpolants, 4330 SizeOfPredicates, 60 NumberOfNonLiveVariables, 863 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 4869/4900 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: (((!(((var_1_6 + var_1_5) % 4294967296) < var_1_7) || ((var_1_5 > (var_1_1 ^ ((-100 + var_1_1) % 4294967296))) && (0 == ((var_1_8 + 32) % 256)))) || (((var_1_6 + var_1_5) % 4294967296) < var_1_7)) || (((var_1_2 == 0) && (var_1_3 == 0)) || (var_1_4 == 0))) - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (((var_1_1 != 1) || (0 != cond)) && (((((((((isInitial == \old(isInitial)) && (var_1_1 == \old(var_1_1))) && (var_1_2 == \old(var_1_2))) && (var_1_3 == \old(var_1_3))) && (var_1_4 == \old(var_1_4))) && (var_1_5 == \old(var_1_5))) && (var_1_6 == \old(var_1_6))) && (var_1_7 == \old(var_1_7))) && (var_1_8 == \old(var_1_8)))) RESULT: Ultimate proved your program to be correct! [2024-11-03 12:44:14,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...