/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-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 20:31:47,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 20:31:47,273 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 20:31:47,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 20:31:47,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 20:31:47,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 20:31:47,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 20:31:47,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 20:31:47,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 20:31:47,301 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 20:31:47,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 20:31:47,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 20:31:47,302 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 20:31:47,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 20:31:47,302 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 20:31:47,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 20:31:47,303 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 20:31:47,304 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 20:31:47,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 20:31:47,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 20:31:47,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 20:31:47,307 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 20:31:47,307 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 20:31:47,308 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 20:31:47,308 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 20:31:47,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 20:31:47,308 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 20:31:47,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 20:31:47,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 20:31:47,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 20:31:47,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 20:31:47,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 20:31:47,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 20:31:47,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 20:31:47,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 20:31:47,310 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 20:31:47,310 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 20:31:47,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 20:31:47,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 20:31:47,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 20:31:47,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 20:31:47,311 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 20:31:47,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-01 20:31:47,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 20:31:47,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 20:31:47,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 20:31:47,581 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 20:31:47,582 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 20:31:47,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2024-11-01 20:31:48,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 20:31:49,076 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 20:31:49,077 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2024-11-01 20:31:49,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85706acd7/c5ef615fb05b4595897ae74abdbbf451/FLAG63db214a4 [2024-11-01 20:31:49,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85706acd7/c5ef615fb05b4595897ae74abdbbf451 [2024-11-01 20:31:49,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 20:31:49,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 20:31:49,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 20:31:49,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 20:31:49,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 20:31:49,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bc60e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49, skipping insertion in model container [2024-11-01 20:31:49,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,146 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 20:31:49,304 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1268,1281] [2024-11-01 20:31:49,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 20:31:49,535 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 20:31:49,543 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1268,1281] [2024-11-01 20:31:49,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 20:31:49,665 INFO L204 MainTranslator]: Completed translation [2024-11-01 20:31:49,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49 WrapperNode [2024-11-01 20:31:49,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 20:31:49,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 20:31:49,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 20:31:49,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 20:31:49,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,787 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1594 [2024-11-01 20:31:49,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 20:31:49,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 20:31:49,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 20:31:49,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 20:31:49,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,856 INFO L175 MemorySlicer]: Split 63 memory accesses to 4 slices as follows [2, 29, 24, 8]. 46 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 30 writes are split as follows [0, 14, 12, 4]. [2024-11-01 20:31:49,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 20:31:49,939 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 20:31:49,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 20:31:49,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 20:31:49,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (1/1) ... [2024-11-01 20:31:49,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 20:31:49,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 20:31:49,964 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) [2024-11-01 20:31:49,966 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 [2024-11-01 20:31:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 20:31:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-01 20:31:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-01 20:31:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-01 20:31:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-01 20:31:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 20:31:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-01 20:31:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-01 20:31:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-01 20:31:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 20:31:49,996 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 20:31:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-01 20:31:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 20:31:49,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 20:31:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-01 20:31:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-01 20:31:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-01 20:31:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-01 20:31:49,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-01 20:31:50,222 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 20:31:50,224 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 20:31:51,148 INFO L? ?]: Removed 1019 outVars from TransFormulas that were not future-live. [2024-11-01 20:31:51,148 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 20:31:51,158 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 20:31:51,158 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-01 20:31:51,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:31:51 BoogieIcfgContainer [2024-11-01 20:31:51,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 20:31:51,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 20:31:51,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 20:31:51,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 20:31:51,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 08:31:49" (1/3) ... [2024-11-01 20:31:51,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd651ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:31:51, skipping insertion in model container [2024-11-01 20:31:51,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:49" (2/3) ... [2024-11-01 20:31:51,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd651ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:31:51, skipping insertion in model container [2024-11-01 20:31:51,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:31:51" (3/3) ... [2024-11-01 20:31:51,167 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2024-11-01 20:31:51,178 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 20:31:51,178 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 20:31:51,217 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 20:31:51,221 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;@767e7219, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 20:31:51,221 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 20:31:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 70 states have (on average 1.5714285714285714) internal successors, (110), 71 states have internal predecessors, (110), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-01 20:31:51,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:51,229 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:51,230 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:51,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash -958431594, now seen corresponding path program 1 times [2024-11-01 20:31:51,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803637750] [2024-11-01 20:31:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:51,240 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:51,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:51,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:51,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-01 20:31:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:51,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 20:31:51,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-01 20:31:51,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-01 20:31:51,733 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:51,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803637750] [2024-11-01 20:31:51,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1803637750] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:51,734 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:51,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-01 20:31:51,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653216177] [2024-11-01 20:31:51,736 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:51,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 20:31:51,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:51,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 20:31:51,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 20:31:51,755 INFO L87 Difference]: Start difference. First operand has 78 states, 70 states have (on average 1.5714285714285714) internal successors, (110), 71 states have internal predecessors, (110), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-01 20:31:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:51,775 INFO L93 Difference]: Finished difference Result 149 states and 237 transitions. [2024-11-01 20:31:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 20:31:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2024-11-01 20:31:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:51,781 INFO L225 Difference]: With dead ends: 149 [2024-11-01 20:31:51,781 INFO L226 Difference]: Without dead ends: 75 [2024-11-01 20:31:51,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 20:31:51,785 INFO L432 NwaCegarLoop]: 97 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, 97 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 [2024-11-01 20:31:51,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-01 20:31:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-01 20:31:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 68 states have internal predecessors, (87), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-11-01 20:31:51,815 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 41 [2024-11-01 20:31:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:51,815 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-11-01 20:31:51,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-01 20:31:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-11-01 20:31:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-01 20:31:51,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:51,817 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:51,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-01 20:31:52,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:52,018 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:52,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:52,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2099855424, now seen corresponding path program 1 times [2024-11-01 20:31:52,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:52,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715357276] [2024-11-01 20:31:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:52,019 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:52,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:52,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:52,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-01 20:31:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:52,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:52,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:52,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:52,406 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:52,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715357276] [2024-11-01 20:31:52,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [715357276] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:52,407 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:52,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:52,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394376065] [2024-11-01 20:31:52,407 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:52,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:52,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:52,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:52,412 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:52,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:52,433 INFO L93 Difference]: Finished difference Result 149 states and 194 transitions. [2024-11-01 20:31:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:52,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 41 [2024-11-01 20:31:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:52,436 INFO L225 Difference]: With dead ends: 149 [2024-11-01 20:31:52,436 INFO L226 Difference]: Without dead ends: 78 [2024-11-01 20:31:52,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:52,437 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:52,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-01 20:31:52,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-01 20:31:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2024-11-01 20:31:52,444 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 41 [2024-11-01 20:31:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:52,444 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2024-11-01 20:31:52,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2024-11-01 20:31:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-01 20:31:52,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:52,445 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:52,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-01 20:31:52,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:52,650 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:52,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:52,651 INFO L85 PathProgramCache]: Analyzing trace with hash 963432764, now seen corresponding path program 1 times [2024-11-01 20:31:52,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:52,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570846284] [2024-11-01 20:31:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:52,651 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:52,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:52,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:52,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-01 20:31:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:53,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:31:53,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:53,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:53,107 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:53,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570846284] [2024-11-01 20:31:53,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [570846284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:53,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:31:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726329487] [2024-11-01 20:31:53,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:53,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:53,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:53,108 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:53,161 INFO L93 Difference]: Finished difference Result 153 states and 198 transitions. [2024-11-01 20:31:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:31:53,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 45 [2024-11-01 20:31:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:53,162 INFO L225 Difference]: With dead ends: 153 [2024-11-01 20:31:53,162 INFO L226 Difference]: Without dead ends: 82 [2024-11-01 20:31:53,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:53,163 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:53,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 463 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:53,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-01 20:31:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-01 20:31:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 75 states have internal predecessors, (94), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2024-11-01 20:31:53,169 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 45 [2024-11-01 20:31:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:53,169 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2024-11-01 20:31:53,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2024-11-01 20:31:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-01 20:31:53,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:53,170 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:53,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-01 20:31:53,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:53,371 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:53,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:53,371 INFO L85 PathProgramCache]: Analyzing trace with hash 390562872, now seen corresponding path program 2 times [2024-11-01 20:31:53,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:53,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013264269] [2024-11-01 20:31:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:53,372 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:53,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:53,373 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:53,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-01 20:31:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:53,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:53,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-01 20:31:53,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-01 20:31:53,720 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:53,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013264269] [2024-11-01 20:31:53,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2013264269] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:53,721 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:53,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956382708] [2024-11-01 20:31:53,721 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:53,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:53,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:53,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:53,722 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:53,749 INFO L93 Difference]: Finished difference Result 153 states and 197 transitions. [2024-11-01 20:31:53,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:53,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 49 [2024-11-01 20:31:53,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:53,754 INFO L225 Difference]: With dead ends: 153 [2024-11-01 20:31:53,754 INFO L226 Difference]: Without dead ends: 85 [2024-11-01 20:31:53,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:53,755 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:53,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-01 20:31:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-01 20:31:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 78 states have internal predecessors, (97), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2024-11-01 20:31:53,762 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 49 [2024-11-01 20:31:53,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:53,762 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2024-11-01 20:31:53,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:53,762 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2024-11-01 20:31:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-01 20:31:53,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:53,763 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:53,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-01 20:31:53,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:53,964 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:53,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1998153908, now seen corresponding path program 1 times [2024-11-01 20:31:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:53,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506234838] [2024-11-01 20:31:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:53,965 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:53,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:53,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:53,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-01 20:31:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:54,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:54,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-01 20:31:54,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-01 20:31:54,325 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:54,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506234838] [2024-11-01 20:31:54,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [506234838] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:54,326 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:54,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:54,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657008816] [2024-11-01 20:31:54,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:54,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:54,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:54,327 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:54,358 INFO L93 Difference]: Finished difference Result 153 states and 196 transitions. [2024-11-01 20:31:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:54,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 53 [2024-11-01 20:31:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:54,362 INFO L225 Difference]: With dead ends: 153 [2024-11-01 20:31:54,362 INFO L226 Difference]: Without dead ends: 88 [2024-11-01 20:31:54,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:54,363 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:54,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-01 20:31:54,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-01 20:31:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 81 states have internal predecessors, (100), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2024-11-01 20:31:54,373 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 53 [2024-11-01 20:31:54,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:54,373 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2024-11-01 20:31:54,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:54,373 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2024-11-01 20:31:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-01 20:31:54,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:54,374 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:54,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-01 20:31:54,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:54,574 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:54,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1928044208, now seen corresponding path program 1 times [2024-11-01 20:31:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:54,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632305794] [2024-11-01 20:31:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:54,575 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:54,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:54,576 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:54,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-01 20:31:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:54,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:31:54,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-01 20:31:54,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-01 20:31:54,981 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:54,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632305794] [2024-11-01 20:31:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632305794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:54,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:54,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:31:54,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269310109] [2024-11-01 20:31:54,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:54,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:54,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:54,982 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:55,045 INFO L93 Difference]: Finished difference Result 157 states and 200 transitions. [2024-11-01 20:31:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:31:55,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 57 [2024-11-01 20:31:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:55,047 INFO L225 Difference]: With dead ends: 157 [2024-11-01 20:31:55,047 INFO L226 Difference]: Without dead ends: 92 [2024-11-01 20:31:55,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:55,050 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:55,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 641 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 20:31:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-01 20:31:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-01 20:31:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.223529411764706) internal successors, (104), 85 states have internal predecessors, (104), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2024-11-01 20:31:55,058 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 57 [2024-11-01 20:31:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:55,058 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2024-11-01 20:31:55,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2024-11-01 20:31:55,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-01 20:31:55,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:55,062 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:55,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-01 20:31:55,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:55,263 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:55,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:55,263 INFO L85 PathProgramCache]: Analyzing trace with hash 779777708, now seen corresponding path program 2 times [2024-11-01 20:31:55,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:55,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841277057] [2024-11-01 20:31:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:55,264 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:55,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:55,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:55,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-01 20:31:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:55,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-01 20:31:55,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-01 20:31:56,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-01 20:31:57,088 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841277057] [2024-11-01 20:31:57,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [841277057] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:57,088 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:57,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-11-01 20:31:57,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221815178] [2024-11-01 20:31:57,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:57,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-01 20:31:57,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-01 20:31:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-01 20:31:57,089 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-01 20:31:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:57,496 INFO L93 Difference]: Finished difference Result 125 states and 158 transitions. [2024-11-01 20:31:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:31:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 61 [2024-11-01 20:31:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:57,497 INFO L225 Difference]: With dead ends: 125 [2024-11-01 20:31:57,497 INFO L226 Difference]: Without dead ends: 123 [2024-11-01 20:31:57,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-01 20:31:57,498 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 326 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:57,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 482 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-01 20:31:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-01 20:31:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 104. [2024-11-01 20:31:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 92 states have internal predecessors, (111), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:31:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 131 transitions. [2024-11-01 20:31:57,511 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 131 transitions. Word has length 61 [2024-11-01 20:31:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:57,514 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 131 transitions. [2024-11-01 20:31:57,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-01 20:31:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 131 transitions. [2024-11-01 20:31:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-01 20:31:57,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:57,516 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:57,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:57,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:57,717 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:57,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:57,717 INFO L85 PathProgramCache]: Analyzing trace with hash -466492681, now seen corresponding path program 1 times [2024-11-01 20:31:57,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:57,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365775624] [2024-11-01 20:31:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:57,717 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:57,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:57,719 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:57,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-01 20:31:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:58,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:58,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-01 20:31:58,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-01 20:31:58,360 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:58,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365775624] [2024-11-01 20:31:58,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365775624] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:58,360 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:58,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:58,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570664352] [2024-11-01 20:31:58,360 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:58,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:58,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:58,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:58,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:58,361 INFO L87 Difference]: Start difference. First operand 104 states and 131 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:31:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:58,389 INFO L93 Difference]: Finished difference Result 171 states and 219 transitions. [2024-11-01 20:31:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:58,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2024-11-01 20:31:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:58,391 INFO L225 Difference]: With dead ends: 171 [2024-11-01 20:31:58,391 INFO L226 Difference]: Without dead ends: 107 [2024-11-01 20:31:58,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:58,392 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:58,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-01 20:31:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-01 20:31:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 95 states have (on average 1.2) internal successors, (114), 95 states have internal predecessors, (114), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:31:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 134 transitions. [2024-11-01 20:31:58,403 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 134 transitions. Word has length 124 [2024-11-01 20:31:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:58,403 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 134 transitions. [2024-11-01 20:31:58,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:31:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 134 transitions. [2024-11-01 20:31:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-01 20:31:58,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:58,404 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:58,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:58,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:58,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:58,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash 57551859, now seen corresponding path program 1 times [2024-11-01 20:31:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984492900] [2024-11-01 20:31:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:58,609 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:58,610 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:58,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-01 20:31:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:59,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:59,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-01 20:31:59,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-01 20:31:59,275 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:59,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984492900] [2024-11-01 20:31:59,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1984492900] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:59,275 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:59,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097930992] [2024-11-01 20:31:59,275 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:59,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:59,276 INFO L87 Difference]: Start difference. First operand 107 states and 134 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:31:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:59,314 INFO L93 Difference]: Finished difference Result 177 states and 225 transitions. [2024-11-01 20:31:59,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:59,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-01 20:31:59,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:59,316 INFO L225 Difference]: With dead ends: 177 [2024-11-01 20:31:59,316 INFO L226 Difference]: Without dead ends: 110 [2024-11-01 20:31:59,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:59,316 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:59,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:59,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-01 20:31:59,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-01 20:31:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 98 states have internal predecessors, (117), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:31:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 137 transitions. [2024-11-01 20:31:59,331 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 137 transitions. Word has length 128 [2024-11-01 20:31:59,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:59,331 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 137 transitions. [2024-11-01 20:31:59,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:31:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 137 transitions. [2024-11-01 20:31:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-01 20:31:59,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:59,332 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:59,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:59,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:59,533 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:59,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1200629359, now seen corresponding path program 1 times [2024-11-01 20:31:59,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:59,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118002752] [2024-11-01 20:31:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:59,534 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:59,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:59,535 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:59,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-01 20:32:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:00,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:00,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-01 20:32:00,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-01 20:32:00,233 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:00,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118002752] [2024-11-01 20:32:00,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1118002752] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:00,233 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:00,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:00,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610837982] [2024-11-01 20:32:00,233 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:00,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:00,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:00,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:00,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:00,234 INFO L87 Difference]: Start difference. First operand 110 states and 137 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:00,263 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2024-11-01 20:32:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:00,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-11-01 20:32:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:00,265 INFO L225 Difference]: With dead ends: 183 [2024-11-01 20:32:00,265 INFO L226 Difference]: Without dead ends: 113 [2024-11-01 20:32:00,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:00,265 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:00,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-01 20:32:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-01 20:32:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 101 states have (on average 1.188118811881188) internal successors, (120), 101 states have internal predecessors, (120), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 140 transitions. [2024-11-01 20:32:00,276 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 140 transitions. Word has length 132 [2024-11-01 20:32:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:00,276 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 140 transitions. [2024-11-01 20:32:00,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 140 transitions. [2024-11-01 20:32:00,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-01 20:32:00,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:00,277 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:00,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-01 20:32:00,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:00,481 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:00,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:00,481 INFO L85 PathProgramCache]: Analyzing trace with hash 197194347, now seen corresponding path program 1 times [2024-11-01 20:32:00,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:00,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519545837] [2024-11-01 20:32:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:00,481 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:00,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:00,482 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:00,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-01 20:32:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:01,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:01,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-01 20:32:01,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-01 20:32:01,210 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:01,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519545837] [2024-11-01 20:32:01,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1519545837] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:01,210 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:01,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:01,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55673133] [2024-11-01 20:32:01,210 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:01,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:01,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:01,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:01,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:01,211 INFO L87 Difference]: Start difference. First operand 113 states and 140 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:01,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:01,242 INFO L93 Difference]: Finished difference Result 189 states and 237 transitions. [2024-11-01 20:32:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:01,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2024-11-01 20:32:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:01,244 INFO L225 Difference]: With dead ends: 189 [2024-11-01 20:32:01,244 INFO L226 Difference]: Without dead ends: 116 [2024-11-01 20:32:01,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:01,244 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:01,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-01 20:32:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-01 20:32:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 104 states have (on average 1.1826923076923077) internal successors, (123), 104 states have internal predecessors, (123), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2024-11-01 20:32:01,255 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 136 [2024-11-01 20:32:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:01,255 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2024-11-01 20:32:01,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2024-11-01 20:32:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-01 20:32:01,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:01,257 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:01,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:01,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:01,458 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:01,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash -275664921, now seen corresponding path program 1 times [2024-11-01 20:32:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082406747] [2024-11-01 20:32:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:01,459 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:01,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:01,460 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:01,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-01 20:32:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:02,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:02,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-01 20:32:02,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-01 20:32:02,264 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082406747] [2024-11-01 20:32:02,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2082406747] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:02,264 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:02,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030428967] [2024-11-01 20:32:02,265 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:02,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:02,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:02,266 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:02,302 INFO L93 Difference]: Finished difference Result 195 states and 243 transitions. [2024-11-01 20:32:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:02,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-01 20:32:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:02,303 INFO L225 Difference]: With dead ends: 195 [2024-11-01 20:32:02,303 INFO L226 Difference]: Without dead ends: 119 [2024-11-01 20:32:02,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:02,304 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:02,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-01 20:32:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-01 20:32:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 107 states have (on average 1.1775700934579438) internal successors, (126), 107 states have internal predecessors, (126), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2024-11-01 20:32:02,315 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 140 [2024-11-01 20:32:02,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:02,315 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2024-11-01 20:32:02,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2024-11-01 20:32:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-01 20:32:02,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:02,316 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:02,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-01 20:32:02,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:02,517 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:02,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2131001629, now seen corresponding path program 1 times [2024-11-01 20:32:02,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:02,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21942470] [2024-11-01 20:32:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:02,517 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:02,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:02,518 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:02,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-01 20:32:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:03,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:03,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-01 20:32:03,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-01 20:32:03,289 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:03,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21942470] [2024-11-01 20:32:03,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [21942470] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:03,289 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:03,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:03,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136621068] [2024-11-01 20:32:03,289 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:03,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:03,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:03,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:03,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:03,292 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:03,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:03,348 INFO L93 Difference]: Finished difference Result 201 states and 249 transitions. [2024-11-01 20:32:03,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:03,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2024-11-01 20:32:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:03,352 INFO L225 Difference]: With dead ends: 201 [2024-11-01 20:32:03,352 INFO L226 Difference]: Without dead ends: 122 [2024-11-01 20:32:03,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:03,353 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:03,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:03,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-01 20:32:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-01 20:32:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.1727272727272726) internal successors, (129), 110 states have internal predecessors, (129), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 149 transitions. [2024-11-01 20:32:03,397 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 149 transitions. Word has length 144 [2024-11-01 20:32:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:03,398 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 149 transitions. [2024-11-01 20:32:03,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 149 transitions. [2024-11-01 20:32:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-01 20:32:03,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:03,399 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:03,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:03,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:03,604 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:03,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:03,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1717534559, now seen corresponding path program 1 times [2024-11-01 20:32:03,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:03,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742931478] [2024-11-01 20:32:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:03,605 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:03,606 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:03,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-01 20:32:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:04,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:04,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-01 20:32:04,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-01 20:32:04,482 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:04,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742931478] [2024-11-01 20:32:04,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [742931478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:04,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:04,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:04,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200764065] [2024-11-01 20:32:04,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:04,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:04,484 INFO L87 Difference]: Start difference. First operand 122 states and 149 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:04,578 INFO L93 Difference]: Finished difference Result 208 states and 256 transitions. [2024-11-01 20:32:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:32:04,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 148 [2024-11-01 20:32:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:04,581 INFO L225 Difference]: With dead ends: 208 [2024-11-01 20:32:04,581 INFO L226 Difference]: Without dead ends: 126 [2024-11-01 20:32:04,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:04,582 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:04,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 550 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 20:32:04,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-01 20:32:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-01 20:32:04,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 114 states have internal predecessors, (133), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2024-11-01 20:32:04,594 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 148 [2024-11-01 20:32:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:04,594 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2024-11-01 20:32:04,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2024-11-01 20:32:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-01 20:32:04,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:04,595 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:04,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-01 20:32:04,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:04,796 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:04,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:04,797 INFO L85 PathProgramCache]: Analyzing trace with hash 9888219, now seen corresponding path program 2 times [2024-11-01 20:32:04,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:04,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917387367] [2024-11-01 20:32:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:04,797 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:04,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:04,798 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:04,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-01 20:32:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:05,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:05,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-01 20:32:05,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-01 20:32:05,679 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:05,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917387367] [2024-11-01 20:32:05,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1917387367] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:05,680 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:05,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:05,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676275087] [2024-11-01 20:32:05,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:05,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:05,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:05,681 INFO L87 Difference]: Start difference. First operand 126 states and 153 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:05,712 INFO L93 Difference]: Finished difference Result 215 states and 263 transitions. [2024-11-01 20:32:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:05,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 152 [2024-11-01 20:32:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:05,714 INFO L225 Difference]: With dead ends: 215 [2024-11-01 20:32:05,714 INFO L226 Difference]: Without dead ends: 129 [2024-11-01 20:32:05,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:05,714 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:05,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-01 20:32:05,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-01 20:32:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 117 states have (on average 1.1623931623931625) internal successors, (136), 117 states have internal predecessors, (136), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2024-11-01 20:32:05,727 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 152 [2024-11-01 20:32:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:05,727 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2024-11-01 20:32:05,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2024-11-01 20:32:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-01 20:32:05,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:05,729 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:05,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Ended with exit code 0 [2024-11-01 20:32:05,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:05,929 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:05,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:05,930 INFO L85 PathProgramCache]: Analyzing trace with hash 454071767, now seen corresponding path program 1 times [2024-11-01 20:32:05,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:05,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785721887] [2024-11-01 20:32:05,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:05,930 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:05,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:05,931 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:05,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-01 20:32:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:06,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 1624 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:06,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-01 20:32:06,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-01 20:32:06,872 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:06,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785721887] [2024-11-01 20:32:06,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1785721887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:06,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:06,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:06,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053690227] [2024-11-01 20:32:06,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:06,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:06,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:06,874 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:06,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:06,988 INFO L93 Difference]: Finished difference Result 222 states and 270 transitions. [2024-11-01 20:32:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:32:06,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 156 [2024-11-01 20:32:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:06,990 INFO L225 Difference]: With dead ends: 222 [2024-11-01 20:32:06,990 INFO L226 Difference]: Without dead ends: 133 [2024-11-01 20:32:06,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:06,990 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:06,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 641 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 20:32:06,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-01 20:32:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-01 20:32:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 121 states have internal predecessors, (140), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2024-11-01 20:32:07,005 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 156 [2024-11-01 20:32:07,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:07,005 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2024-11-01 20:32:07,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:07,005 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2024-11-01 20:32:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-01 20:32:07,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:07,006 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:07,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:07,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:07,206 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:07,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:07,207 INFO L85 PathProgramCache]: Analyzing trace with hash 962063315, now seen corresponding path program 2 times [2024-11-01 20:32:07,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:07,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991120202] [2024-11-01 20:32:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:07,207 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:07,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:07,208 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:07,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-01 20:32:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:08,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:08,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-01 20:32:08,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-01 20:32:08,179 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:08,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991120202] [2024-11-01 20:32:08,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1991120202] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:08,180 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:08,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:08,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001530194] [2024-11-01 20:32:08,180 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:08,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:08,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:08,181 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:08,212 INFO L93 Difference]: Finished difference Result 229 states and 277 transitions. [2024-11-01 20:32:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:08,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 160 [2024-11-01 20:32:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:08,214 INFO L225 Difference]: With dead ends: 229 [2024-11-01 20:32:08,214 INFO L226 Difference]: Without dead ends: 136 [2024-11-01 20:32:08,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:08,214 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:08,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-01 20:32:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-01 20:32:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 124 states have (on average 1.153225806451613) internal successors, (143), 124 states have internal predecessors, (143), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 163 transitions. [2024-11-01 20:32:08,228 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 163 transitions. Word has length 160 [2024-11-01 20:32:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:08,228 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 163 transitions. [2024-11-01 20:32:08,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 163 transitions. [2024-11-01 20:32:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-01 20:32:08,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:08,229 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:08,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:08,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:08,430 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:08,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1846430897, now seen corresponding path program 1 times [2024-11-01 20:32:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:08,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267249625] [2024-11-01 20:32:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:08,431 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:08,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:08,432 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:08,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-01 20:32:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:09,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:09,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-01 20:32:09,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-01 20:32:09,454 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267249625] [2024-11-01 20:32:09,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [267249625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:09,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:09,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:09,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971835547] [2024-11-01 20:32:09,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:09,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:09,456 INFO L87 Difference]: Start difference. First operand 136 states and 163 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:09,523 INFO L93 Difference]: Finished difference Result 236 states and 284 transitions. [2024-11-01 20:32:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:32:09,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 164 [2024-11-01 20:32:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:09,527 INFO L225 Difference]: With dead ends: 236 [2024-11-01 20:32:09,527 INFO L226 Difference]: Without dead ends: 140 [2024-11-01 20:32:09,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:09,528 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:09,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 459 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 20:32:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-01 20:32:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-01 20:32:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 128 states have (on average 1.1484375) internal successors, (147), 128 states have internal predecessors, (147), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 167 transitions. [2024-11-01 20:32:09,545 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 167 transitions. Word has length 164 [2024-11-01 20:32:09,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:09,545 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 167 transitions. [2024-11-01 20:32:09,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:09,545 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 167 transitions. [2024-11-01 20:32:09,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-01 20:32:09,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:09,546 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:09,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Ended with exit code 0 [2024-11-01 20:32:09,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:09,750 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:09,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:09,750 INFO L85 PathProgramCache]: Analyzing trace with hash -249340725, now seen corresponding path program 2 times [2024-11-01 20:32:09,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:09,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647298057] [2024-11-01 20:32:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:09,751 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:09,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:09,752 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:09,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-01 20:32:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:10,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:10,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-01 20:32:10,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-01 20:32:10,852 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:10,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647298057] [2024-11-01 20:32:10,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [647298057] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:10,852 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:10,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:10,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58172634] [2024-11-01 20:32:10,852 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:10,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:10,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:10,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:10,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:10,855 INFO L87 Difference]: Start difference. First operand 140 states and 167 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:10,901 INFO L93 Difference]: Finished difference Result 243 states and 291 transitions. [2024-11-01 20:32:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:10,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 168 [2024-11-01 20:32:10,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:10,903 INFO L225 Difference]: With dead ends: 243 [2024-11-01 20:32:10,903 INFO L226 Difference]: Without dead ends: 143 [2024-11-01 20:32:10,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:10,904 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:10,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:10,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-01 20:32:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-01 20:32:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 131 states have (on average 1.1450381679389312) internal successors, (150), 131 states have internal predecessors, (150), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2024-11-01 20:32:10,930 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 168 [2024-11-01 20:32:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:10,930 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2024-11-01 20:32:10,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2024-11-01 20:32:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-01 20:32:10,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:10,931 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:10,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:11,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:11,132 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:11,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:11,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1686083527, now seen corresponding path program 1 times [2024-11-01 20:32:11,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:11,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662589269] [2024-11-01 20:32:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:11,133 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:11,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:11,134 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:11,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Waiting until timeout for monitored process [2024-11-01 20:32:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:12,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:12,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-01 20:32:12,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-01 20:32:12,263 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662589269] [2024-11-01 20:32:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [662589269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:12,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197106740] [2024-11-01 20:32:12,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:12,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:12,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:12,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:12,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:12,265 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:12,320 INFO L93 Difference]: Finished difference Result 250 states and 298 transitions. [2024-11-01 20:32:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:32:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 172 [2024-11-01 20:32:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:12,321 INFO L225 Difference]: With dead ends: 250 [2024-11-01 20:32:12,322 INFO L226 Difference]: Without dead ends: 147 [2024-11-01 20:32:12,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:12,322 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:12,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 368 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-01 20:32:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-01 20:32:12,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 135 states have (on average 1.1407407407407408) internal successors, (154), 135 states have internal predecessors, (154), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2024-11-01 20:32:12,336 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 172 [2024-11-01 20:32:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:12,336 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2024-11-01 20:32:12,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2024-11-01 20:32:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-01 20:32:12,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:12,337 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:12,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:12,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:12,538 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:12,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash 151909571, now seen corresponding path program 2 times [2024-11-01 20:32:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:12,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559851944] [2024-11-01 20:32:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:12,538 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:12,540 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:12,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Waiting until timeout for monitored process [2024-11-01 20:32:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:13,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:13,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-01 20:32:13,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-01 20:32:13,665 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:13,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559851944] [2024-11-01 20:32:13,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1559851944] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:13,665 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:13,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:13,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227176894] [2024-11-01 20:32:13,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:13,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:13,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:13,666 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:13,698 INFO L93 Difference]: Finished difference Result 257 states and 305 transitions. [2024-11-01 20:32:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:13,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 176 [2024-11-01 20:32:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:13,700 INFO L225 Difference]: With dead ends: 257 [2024-11-01 20:32:13,700 INFO L226 Difference]: Without dead ends: 150 [2024-11-01 20:32:13,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:13,700 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:13,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-01 20:32:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-01 20:32:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 138 states have (on average 1.1376811594202898) internal successors, (157), 138 states have internal predecessors, (157), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2024-11-01 20:32:13,713 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 176 [2024-11-01 20:32:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:13,713 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2024-11-01 20:32:13,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:13,714 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2024-11-01 20:32:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-01 20:32:13,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:13,714 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:13,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Ended with exit code 0 [2024-11-01 20:32:13,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:13,915 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:13,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash -848886977, now seen corresponding path program 1 times [2024-11-01 20:32:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:13,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862872678] [2024-11-01 20:32:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:13,915 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:13,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:13,916 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:13,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (23)] Waiting until timeout for monitored process [2024-11-01 20:32:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:15,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:15,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-01 20:32:15,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:15,139 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-01 20:32:15,139 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:15,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862872678] [2024-11-01 20:32:15,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1862872678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:15,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:15,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:15,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724276683] [2024-11-01 20:32:15,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:15,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:15,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:15,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:15,141 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:15,218 INFO L93 Difference]: Finished difference Result 264 states and 312 transitions. [2024-11-01 20:32:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:32:15,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 180 [2024-11-01 20:32:15,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:15,221 INFO L225 Difference]: With dead ends: 264 [2024-11-01 20:32:15,221 INFO L226 Difference]: Without dead ends: 154 [2024-11-01 20:32:15,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:15,222 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:15,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 641 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 20:32:15,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-01 20:32:15,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-01 20:32:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 142 states have internal predecessors, (161), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2024-11-01 20:32:15,238 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 180 [2024-11-01 20:32:15,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:15,239 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2024-11-01 20:32:15,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2024-11-01 20:32:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-01 20:32:15,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:15,239 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:15,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (23)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:15,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:15,440 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:15,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1990429765, now seen corresponding path program 2 times [2024-11-01 20:32:15,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:15,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809601415] [2024-11-01 20:32:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:15,441 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:15,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:15,442 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:15,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (24)] Waiting until timeout for monitored process [2024-11-01 20:32:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:16,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:16,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-01 20:32:16,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-11-01 20:32:16,631 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:16,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809601415] [2024-11-01 20:32:16,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1809601415] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:16,631 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:16,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377649996] [2024-11-01 20:32:16,632 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:16,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:16,632 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:16,679 INFO L93 Difference]: Finished difference Result 271 states and 319 transitions. [2024-11-01 20:32:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:16,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 184 [2024-11-01 20:32:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:16,681 INFO L225 Difference]: With dead ends: 271 [2024-11-01 20:32:16,681 INFO L226 Difference]: Without dead ends: 157 [2024-11-01 20:32:16,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:16,682 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:16,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:16,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-01 20:32:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-01 20:32:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 145 states have (on average 1.1310344827586207) internal successors, (164), 145 states have internal predecessors, (164), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-11-01 20:32:16,695 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 184 [2024-11-01 20:32:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:16,696 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-11-01 20:32:16,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:16,696 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-11-01 20:32:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-01 20:32:16,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:16,696 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:16,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (24)] Ended with exit code 0 [2024-11-01 20:32:16,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:16,897 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:16,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash 881112503, now seen corresponding path program 1 times [2024-11-01 20:32:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:16,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324774602] [2024-11-01 20:32:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:16,898 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:16,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:16,899 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:16,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (25)] Waiting until timeout for monitored process [2024-11-01 20:32:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:18,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:18,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-01 20:32:18,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-11-01 20:32:18,190 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324774602] [2024-11-01 20:32:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1324774602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:18,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:18,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:18,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132401000] [2024-11-01 20:32:18,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:18,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:18,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:18,191 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:18,251 INFO L93 Difference]: Finished difference Result 278 states and 326 transitions. [2024-11-01 20:32:18,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:32:18,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 188 [2024-11-01 20:32:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:18,253 INFO L225 Difference]: With dead ends: 278 [2024-11-01 20:32:18,253 INFO L226 Difference]: Without dead ends: 161 [2024-11-01 20:32:18,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:18,253 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:18,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 368 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-01 20:32:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-01 20:32:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 149 states have (on average 1.1275167785234899) internal successors, (168), 149 states have internal predecessors, (168), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 188 transitions. [2024-11-01 20:32:18,267 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 188 transitions. Word has length 188 [2024-11-01 20:32:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:18,267 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 188 transitions. [2024-11-01 20:32:18,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 188 transitions. [2024-11-01 20:32:18,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-01 20:32:18,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:18,268 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:18,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (25)] Ended with exit code 0 [2024-11-01 20:32:18,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:18,469 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:18,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1383884365, now seen corresponding path program 2 times [2024-11-01 20:32:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437825972] [2024-11-01 20:32:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:18,469 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:18,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:18,470 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:18,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (26)] Waiting until timeout for monitored process [2024-11-01 20:32:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:19,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:19,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-01 20:32:19,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-01 20:32:19,805 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:19,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437825972] [2024-11-01 20:32:19,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [437825972] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:19,805 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:19,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:19,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605929251] [2024-11-01 20:32:19,805 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:19,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:19,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:19,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:19,806 INFO L87 Difference]: Start difference. First operand 161 states and 188 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:19,850 INFO L93 Difference]: Finished difference Result 285 states and 333 transitions. [2024-11-01 20:32:19,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:19,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 192 [2024-11-01 20:32:19,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:19,852 INFO L225 Difference]: With dead ends: 285 [2024-11-01 20:32:19,852 INFO L226 Difference]: Without dead ends: 164 [2024-11-01 20:32:19,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:19,853 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:19,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-01 20:32:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-01 20:32:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 152 states have (on average 1.125) internal successors, (171), 152 states have internal predecessors, (171), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 191 transitions. [2024-11-01 20:32:19,877 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 191 transitions. Word has length 192 [2024-11-01 20:32:19,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:19,877 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 191 transitions. [2024-11-01 20:32:19,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:19,877 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 191 transitions. [2024-11-01 20:32:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-01 20:32:19,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:19,878 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:19,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (26)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:20,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:20,082 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:20,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:20,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1159368913, now seen corresponding path program 1 times [2024-11-01 20:32:20,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:20,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080877880] [2024-11-01 20:32:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:20,083 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:20,084 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:20,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (27)] Waiting until timeout for monitored process [2024-11-01 20:32:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:21,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:21,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-01 20:32:21,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-01 20:32:21,454 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:21,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080877880] [2024-11-01 20:32:21,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2080877880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:21,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:21,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:21,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501341289] [2024-11-01 20:32:21,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:21,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:21,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:21,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:21,455 INFO L87 Difference]: Start difference. First operand 164 states and 191 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:21,511 INFO L93 Difference]: Finished difference Result 292 states and 340 transitions. [2024-11-01 20:32:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:32:21,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 196 [2024-11-01 20:32:21,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:21,513 INFO L225 Difference]: With dead ends: 292 [2024-11-01 20:32:21,513 INFO L226 Difference]: Without dead ends: 168 [2024-11-01 20:32:21,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:21,514 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:21,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 459 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:21,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-01 20:32:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-01 20:32:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 156 states have (on average 1.1217948717948718) internal successors, (175), 156 states have internal predecessors, (175), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:21,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 195 transitions. [2024-11-01 20:32:21,528 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 195 transitions. Word has length 196 [2024-11-01 20:32:21,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:21,528 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 195 transitions. [2024-11-01 20:32:21,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:21,529 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 195 transitions. [2024-11-01 20:32:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-01 20:32:21,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:21,529 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:21,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (27)] Ended with exit code 0 [2024-11-01 20:32:21,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:21,730 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:21,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:21,730 INFO L85 PathProgramCache]: Analyzing trace with hash -265804117, now seen corresponding path program 2 times [2024-11-01 20:32:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:21,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817662441] [2024-11-01 20:32:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:21,731 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:21,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:21,732 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:21,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (28)] Waiting until timeout for monitored process [2024-11-01 20:32:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:23,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:23,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-01 20:32:23,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-01 20:32:23,128 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817662441] [2024-11-01 20:32:23,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [817662441] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:23,128 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:23,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:23,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895292128] [2024-11-01 20:32:23,128 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:23,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:23,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:23,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:23,129 INFO L87 Difference]: Start difference. First operand 168 states and 195 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:23,156 INFO L93 Difference]: Finished difference Result 299 states and 347 transitions. [2024-11-01 20:32:23,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:23,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 200 [2024-11-01 20:32:23,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:23,157 INFO L225 Difference]: With dead ends: 299 [2024-11-01 20:32:23,157 INFO L226 Difference]: Without dead ends: 171 [2024-11-01 20:32:23,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:23,158 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:23,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-01 20:32:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-01 20:32:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 159 states have (on average 1.119496855345912) internal successors, (178), 159 states have internal predecessors, (178), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 198 transitions. [2024-11-01 20:32:23,172 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 198 transitions. Word has length 200 [2024-11-01 20:32:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:23,173 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 198 transitions. [2024-11-01 20:32:23,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 198 transitions. [2024-11-01 20:32:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-01 20:32:23,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:23,174 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:23,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (28)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:23,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:23,377 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:23,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:23,377 INFO L85 PathProgramCache]: Analyzing trace with hash -960106585, now seen corresponding path program 1 times [2024-11-01 20:32:23,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:23,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177682080] [2024-11-01 20:32:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:23,377 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:23,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:23,379 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:23,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (29)] Waiting until timeout for monitored process [2024-11-01 20:32:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:24,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:24,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-01 20:32:24,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-01 20:32:24,818 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:24,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177682080] [2024-11-01 20:32:24,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1177682080] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:24,818 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:24,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:24,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681614166] [2024-11-01 20:32:24,818 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:24,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:24,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:24,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:24,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:24,819 INFO L87 Difference]: Start difference. First operand 171 states and 198 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:24,847 INFO L93 Difference]: Finished difference Result 305 states and 353 transitions. [2024-11-01 20:32:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:24,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 204 [2024-11-01 20:32:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:24,849 INFO L225 Difference]: With dead ends: 305 [2024-11-01 20:32:24,849 INFO L226 Difference]: Without dead ends: 174 [2024-11-01 20:32:24,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:24,850 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:24,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-01 20:32:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-01 20:32:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 162 states have (on average 1.117283950617284) internal successors, (181), 162 states have internal predecessors, (181), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:24,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 201 transitions. [2024-11-01 20:32:24,864 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 201 transitions. Word has length 204 [2024-11-01 20:32:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:24,865 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 201 transitions. [2024-11-01 20:32:24,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:24,865 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 201 transitions. [2024-11-01 20:32:24,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-01 20:32:24,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:24,866 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:24,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (29)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:25,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:25,066 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:25,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1004530211, now seen corresponding path program 1 times [2024-11-01 20:32:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:25,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862420748] [2024-11-01 20:32:25,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:25,067 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:25,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:25,068 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:25,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (30)] Waiting until timeout for monitored process [2024-11-01 20:32:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:26,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:26,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-01 20:32:26,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-01 20:32:26,535 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:26,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862420748] [2024-11-01 20:32:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1862420748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:26,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521287378] [2024-11-01 20:32:26,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:26,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:26,536 INFO L87 Difference]: Start difference. First operand 174 states and 201 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:26,585 INFO L93 Difference]: Finished difference Result 312 states and 360 transitions. [2024-11-01 20:32:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:32:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 208 [2024-11-01 20:32:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:26,587 INFO L225 Difference]: With dead ends: 312 [2024-11-01 20:32:26,587 INFO L226 Difference]: Without dead ends: 178 [2024-11-01 20:32:26,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:26,588 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:26,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 641 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-01 20:32:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-01 20:32:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 166 states have (on average 1.1144578313253013) internal successors, (185), 166 states have internal predecessors, (185), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2024-11-01 20:32:26,606 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 208 [2024-11-01 20:32:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:26,607 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2024-11-01 20:32:26,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2024-11-01 20:32:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-01 20:32:26,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:26,608 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:26,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (30)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:26,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:26,809 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:26,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:26,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1178617503, now seen corresponding path program 2 times [2024-11-01 20:32:26,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:26,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146296739] [2024-11-01 20:32:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:26,810 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:26,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:26,811 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:26,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (31)] Waiting until timeout for monitored process [2024-11-01 20:32:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:28,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:28,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-01 20:32:28,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-01 20:32:28,367 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:28,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146296739] [2024-11-01 20:32:28,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1146296739] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:28,367 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:28,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:28,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745791949] [2024-11-01 20:32:28,367 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:28,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:28,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:28,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:28,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:28,368 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:28,399 INFO L93 Difference]: Finished difference Result 319 states and 367 transitions. [2024-11-01 20:32:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:28,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 212 [2024-11-01 20:32:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:28,400 INFO L225 Difference]: With dead ends: 319 [2024-11-01 20:32:28,401 INFO L226 Difference]: Without dead ends: 181 [2024-11-01 20:32:28,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:28,401 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:28,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-01 20:32:28,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-01 20:32:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 169 states have (on average 1.1124260355029585) internal successors, (188), 169 states have internal predecessors, (188), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 208 transitions. [2024-11-01 20:32:28,416 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 208 transitions. Word has length 212 [2024-11-01 20:32:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:28,416 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 208 transitions. [2024-11-01 20:32:28,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 208 transitions. [2024-11-01 20:32:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-01 20:32:28,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:28,417 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:28,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (31)] Ended with exit code 0 [2024-11-01 20:32:28,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:28,620 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:28,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1868237669, now seen corresponding path program 1 times [2024-11-01 20:32:28,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:28,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587723487] [2024-11-01 20:32:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:28,621 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:28,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:28,622 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:28,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (32)] Waiting until timeout for monitored process [2024-11-01 20:32:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:30,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:30,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-01 20:32:30,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-01 20:32:30,240 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587723487] [2024-11-01 20:32:30,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [587723487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:30,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:30,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:30,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101052829] [2024-11-01 20:32:30,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:30,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:30,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:30,241 INFO L87 Difference]: Start difference. First operand 181 states and 208 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:30,290 INFO L93 Difference]: Finished difference Result 326 states and 374 transitions. [2024-11-01 20:32:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 20:32:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 216 [2024-11-01 20:32:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:30,292 INFO L225 Difference]: With dead ends: 326 [2024-11-01 20:32:30,292 INFO L226 Difference]: Without dead ends: 185 [2024-11-01 20:32:30,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:30,293 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:30,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 459 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-01 20:32:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-01 20:32:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 173 states have (on average 1.1098265895953756) internal successors, (192), 173 states have internal predecessors, (192), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 20:32:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 212 transitions. [2024-11-01 20:32:30,308 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 212 transitions. Word has length 216 [2024-11-01 20:32:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:30,308 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 212 transitions. [2024-11-01 20:32:30,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 212 transitions. [2024-11-01 20:32:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-01 20:32:30,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:30,309 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:30,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (32)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:30,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:30,509 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:30,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:30,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1664465769, now seen corresponding path program 2 times [2024-11-01 20:32:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665672666] [2024-11-01 20:32:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:30,510 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:30,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:30,512 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:30,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (33)] Waiting until timeout for monitored process [2024-11-01 20:32:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:32,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 1816 conjuncts, 671 conjuncts are in the unsatisfiable core [2024-11-01 20:32:32,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:32,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-01 20:32:32,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-01 20:32:32,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:32,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-01 20:32:32,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:32,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2024-11-01 20:32:33,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-01 20:32:33,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-01 20:32:34,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-01 20:32:34,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-01 20:32:35,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:35,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-01 20:32:36,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:36,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2024-11-01 20:32:49,908 INFO L349 Elim1Store]: treesize reduction 113, result has 23.6 percent of original size [2024-11-01 20:32:49,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 95 treesize of output 110 [2024-11-01 20:32:54,429 INFO L349 Elim1Store]: treesize reduction 243, result has 20.3 percent of original size [2024-11-01 20:32:54,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 40 case distinctions, treesize of input 285 treesize of output 309