/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-b75d321-m [2024-11-05 14:10:50,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 14:10:50,870 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 14:10:50,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 14:10:50,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 14:10:50,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 14:10:50,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 14:10:50,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 14:10:50,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 14:10:50,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 14:10:50,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 14:10:50,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 14:10:50,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 14:10:50,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 14:10:50,909 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 14:10:50,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 14:10:50,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 14:10:50,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 14:10:50,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 14:10:50,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 14:10:50,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 14:10:50,914 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 14:10:50,914 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 14:10:50,914 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 14:10:50,915 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 14:10:50,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 14:10:50,915 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 14:10:50,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 14:10:50,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 14:10:50,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 14:10:50,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 14:10:50,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:10:50,918 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 14:10:50,918 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 14:10:50,918 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 14:10:50,918 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 14:10:50,918 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 14:10:50,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 14:10:50,919 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 14:10:50,919 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 14:10:50,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 14:10:50,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 14:10:51,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 14:10:51,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 14:10:51,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 14:10:51,156 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 14:10:51,156 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 14:10:51,158 INFO L431 ainManager$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 [2024-11-05 14:10:52,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 14:10:52,801 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 14:10:52,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2024-11-05 14:10:52,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19bdd87a/7655ecafc79547298127e26d51da4ebd/FLAG326fce06d [2024-11-05 14:10:52,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19bdd87a/7655ecafc79547298127e26d51da4ebd [2024-11-05 14:10:52,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 14:10:52,832 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 14:10:52,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 14:10:52,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 14:10:52,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 14:10:52,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:10:52" (1/1) ... [2024-11-05 14:10:52,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e892850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:52, skipping insertion in model container [2024-11-05 14:10:52,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:10:52" (1/1) ... [2024-11-05 14:10:52,886 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:10:53,071 WARN L250 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] [2024-11-05 14:10:53,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:10:53,365 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 14:10:53,376 WARN L250 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] [2024-11-05 14:10:53,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:10:53,518 INFO L204 MainTranslator]: Completed translation [2024-11-05 14:10:53,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53 WrapperNode [2024-11-05 14:10:53,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 14:10:53,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 14:10:53,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 14:10:53,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 14:10:53,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,628 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1594 [2024-11-05 14:10:53,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 14:10:53,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 14:10:53,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 14:10:53,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 14:10:53,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,719 INFO L175 MemorySlicer]: Split 63 memory accesses to 4 slices as follows [2, 29, 8, 24]. 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, 4, 12]. [2024-11-05 14:10:53,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 14:10:53,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 14:10:53,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 14:10:53,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 14:10:53,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (1/1) ... [2024-11-05 14:10:53,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:10:53,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 14:10:53,837 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) [2024-11-05 14:10:53,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 14:10:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 14:10:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-05 14:10:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-05 14:10:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-05 14:10:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-05 14:10:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 14:10:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 14:10:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 14:10:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-05 14:10:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 14:10:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 14:10:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 14:10:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 14:10:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 14:10:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-05 14:10:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-05 14:10:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-05 14:10:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-05 14:10:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 14:10:54,143 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 14:10:54,145 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 14:10:55,479 INFO L? ?]: Removed 1019 outVars from TransFormulas that were not future-live. [2024-11-05 14:10:55,479 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 14:10:55,494 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 14:10:55,494 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-05 14:10:55,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:10:55 BoogieIcfgContainer [2024-11-05 14:10:55,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 14:10:55,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 14:10:55,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 14:10:55,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 14:10:55,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:10:52" (1/3) ... [2024-11-05 14:10:55,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd7202f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:10:55, skipping insertion in model container [2024-11-05 14:10:55,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:53" (2/3) ... [2024-11-05 14:10:55,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd7202f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:10:55, skipping insertion in model container [2024-11-05 14:10:55,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:10:55" (3/3) ... [2024-11-05 14:10:55,504 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2024-11-05 14:10:55,520 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 14:10:55,521 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 14:10:55,586 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 14:10:55,592 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;@2ffee17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 14:10:55,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 14:10:55,598 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) [2024-11-05 14:10:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-05 14:10:55,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:55,607 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] [2024-11-05 14:10:55,607 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:55,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash -958431594, now seen corresponding path program 1 times [2024-11-05 14:10:55,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:55,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127856533] [2024-11-05 14:10:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:55,622 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:55,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:55,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:55,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 14:10:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:56,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 14:10:56,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-05 14:10:56,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-05 14:10:56,245 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:56,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127856533] [2024-11-05 14:10:56,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [127856533] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:56,247 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:56,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 14:10:56,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246528258] [2024-11-05 14:10:56,249 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:56,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 14:10:56,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:56,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 14:10:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:10:56,277 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) [2024-11-05 14:10:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:56,309 INFO L93 Difference]: Finished difference Result 149 states and 237 transitions. [2024-11-05 14:10:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 14:10:56,312 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 [2024-11-05 14:10:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:56,319 INFO L225 Difference]: With dead ends: 149 [2024-11-05 14:10:56,320 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 14:10:56,323 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 [2024-11-05 14:10:56,327 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 [2024-11-05 14:10:56,327 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] [2024-11-05 14:10:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 14:10:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-05 14:10:56,368 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) [2024-11-05 14:10:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-11-05 14:10:56,375 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 41 [2024-11-05 14:10:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:56,375 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-11-05 14:10:56,375 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) [2024-11-05 14:10:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-11-05 14:10:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-05 14:10:56,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:56,378 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] [2024-11-05 14:10:56,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:56,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:56,583 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:56,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:56,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2099855424, now seen corresponding path program 1 times [2024-11-05 14:10:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:56,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677856993] [2024-11-05 14:10:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:56,585 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:56,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:56,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:56,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 14:10:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:57,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:57,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:57,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:57,121 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:57,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677856993] [2024-11-05 14:10:57,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1677856993] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:57,121 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:57,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141853203] [2024-11-05 14:10:57,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:57,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:57,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:57,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:57,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:57,124 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) [2024-11-05 14:10:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:57,156 INFO L93 Difference]: Finished difference Result 149 states and 194 transitions. [2024-11-05 14:10:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:57,158 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 [2024-11-05 14:10:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:57,159 INFO L225 Difference]: With dead ends: 149 [2024-11-05 14:10:57,159 INFO L226 Difference]: Without dead ends: 78 [2024-11-05 14:10:57,160 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 [2024-11-05 14:10:57,161 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 [2024-11-05 14:10:57,161 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] [2024-11-05 14:10:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-05 14:10:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-05 14:10:57,168 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) [2024-11-05 14:10:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2024-11-05 14:10:57,170 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 41 [2024-11-05 14:10:57,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:57,170 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2024-11-05 14:10:57,170 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) [2024-11-05 14:10:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2024-11-05 14:10:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-05 14:10:57,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:57,172 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] [2024-11-05 14:10:57,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 14:10:57,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:57,376 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:57,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash 963432764, now seen corresponding path program 1 times [2024-11-05 14:10:57,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:57,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351144612] [2024-11-05 14:10:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:57,377 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:57,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:57,379 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:57,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 14:10:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:57,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:10:57,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:57,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:57,955 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:57,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351144612] [2024-11-05 14:10:57,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1351144612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:57,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:57,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:10:57,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383419598] [2024-11-05 14:10:57,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:57,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:57,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:57,958 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) [2024-11-05 14:10:58,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:58,020 INFO L93 Difference]: Finished difference Result 153 states and 198 transitions. [2024-11-05 14:10:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:10:58,021 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 [2024-11-05 14:10:58,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:58,022 INFO L225 Difference]: With dead ends: 153 [2024-11-05 14:10:58,022 INFO L226 Difference]: Without dead ends: 82 [2024-11-05 14:10:58,023 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 [2024-11-05 14:10:58,024 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 [2024-11-05 14:10:58,024 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] [2024-11-05 14:10:58,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-05 14:10:58,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-05 14:10:58,031 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) [2024-11-05 14:10:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2024-11-05 14:10:58,032 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 45 [2024-11-05 14:10:58,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:58,032 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2024-11-05 14:10:58,033 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) [2024-11-05 14:10:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2024-11-05 14:10:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-05 14:10:58,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:58,034 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] [2024-11-05 14:10:58,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:58,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:58,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:58,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash 390562872, now seen corresponding path program 2 times [2024-11-05 14:10:58,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:58,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533884407] [2024-11-05 14:10:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:58,240 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:58,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:58,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 14:10:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:58,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:58,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-05 14:10:58,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-05 14:10:58,724 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:58,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533884407] [2024-11-05 14:10:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [533884407] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:58,725 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:58,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387508866] [2024-11-05 14:10:58,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:58,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:58,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:58,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:58,727 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) [2024-11-05 14:10:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:58,771 INFO L93 Difference]: Finished difference Result 153 states and 197 transitions. [2024-11-05 14:10:58,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:58,775 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 [2024-11-05 14:10:58,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:58,776 INFO L225 Difference]: With dead ends: 153 [2024-11-05 14:10:58,776 INFO L226 Difference]: Without dead ends: 85 [2024-11-05 14:10:58,776 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 [2024-11-05 14:10:58,777 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 [2024-11-05 14:10:58,777 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] [2024-11-05 14:10:58,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-05 14:10:58,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-05 14:10:58,788 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) [2024-11-05 14:10:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2024-11-05 14:10:58,791 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 49 [2024-11-05 14:10:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:58,792 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2024-11-05 14:10:58,793 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) [2024-11-05 14:10:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2024-11-05 14:10:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-05 14:10:58,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:58,794 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] [2024-11-05 14:10:58,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:58,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:58,995 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:58,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1998153908, now seen corresponding path program 1 times [2024-11-05 14:10:58,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:58,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275045839] [2024-11-05 14:10:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:58,996 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:58,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:58,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:58,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 14:10:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:59,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:59,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-05 14:10:59,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-05 14:10:59,513 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:59,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275045839] [2024-11-05 14:10:59,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1275045839] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:59,513 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:59,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:59,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384742596] [2024-11-05 14:10:59,513 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:59,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:59,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:59,516 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) [2024-11-05 14:10:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:59,564 INFO L93 Difference]: Finished difference Result 153 states and 196 transitions. [2024-11-05 14:10:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:59,567 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 [2024-11-05 14:10:59,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:59,568 INFO L225 Difference]: With dead ends: 153 [2024-11-05 14:10:59,568 INFO L226 Difference]: Without dead ends: 88 [2024-11-05 14:10:59,568 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 [2024-11-05 14:10:59,569 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 [2024-11-05 14:10:59,569 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] [2024-11-05 14:10:59,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-05 14:10:59,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-05 14:10:59,582 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) [2024-11-05 14:10:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2024-11-05 14:10:59,583 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 53 [2024-11-05 14:10:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:59,584 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2024-11-05 14:10:59,584 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) [2024-11-05 14:10:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2024-11-05 14:10:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-05 14:10:59,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:59,588 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] [2024-11-05 14:10:59,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 14:10:59,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:59,793 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:59,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1928044208, now seen corresponding path program 1 times [2024-11-05 14:10:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:59,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532143584] [2024-11-05 14:10:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:59,794 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:59,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:59,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:59,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 14:11:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:00,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:11:00,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-05 14:11:00,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-05 14:11:00,360 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532143584] [2024-11-05 14:11:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1532143584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:11:00,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:11:00,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:11:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396939887] [2024-11-05 14:11:00,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:11:00,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:11:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:11:00,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:11:00,364 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) [2024-11-05 14:11:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:00,444 INFO L93 Difference]: Finished difference Result 157 states and 200 transitions. [2024-11-05 14:11:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:11:00,446 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 [2024-11-05 14:11:00,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:00,448 INFO L225 Difference]: With dead ends: 157 [2024-11-05 14:11:00,449 INFO L226 Difference]: Without dead ends: 92 [2024-11-05 14:11:00,449 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 [2024-11-05 14:11:00,450 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 [2024-11-05 14:11:00,450 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] [2024-11-05 14:11:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-05 14:11:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-05 14:11:00,458 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) [2024-11-05 14:11:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2024-11-05 14:11:00,462 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 57 [2024-11-05 14:11:00,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:00,462 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2024-11-05 14:11:00,462 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) [2024-11-05 14:11:00,462 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2024-11-05 14:11:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-05 14:11:00,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:00,463 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] [2024-11-05 14:11:00,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 14:11:00,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:00,664 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:00,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:00,665 INFO L85 PathProgramCache]: Analyzing trace with hash 779777708, now seen corresponding path program 2 times [2024-11-05 14:11:00,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:00,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396639974] [2024-11-05 14:11:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:00,665 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:00,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:00,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:00,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 14:11:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:01,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-05 14:11:01,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:01,230 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 [2024-11-05 14:11:01,414 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 [2024-11-05 14:11:01,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:11:01,591 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 [2024-11-05 14:11:01,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:11:01,816 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 [2024-11-05 14:11:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-05 14:11:04,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:10,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2024-11-05 14:11:10,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 52 [2024-11-05 14:11:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-05 14:11:10,888 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:10,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396639974] [2024-11-05 14:11:10,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1396639974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:11:10,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:11:10,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 19 [2024-11-05 14:11:10,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450890392] [2024-11-05 14:11:10,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:11:10,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 14:11:10,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:10,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 14:11:10,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=266, Unknown=1, NotChecked=0, Total=342 [2024-11-05 14:11:10,903 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-05 14:11:14,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:11:19,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:11:23,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:11:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:25,032 INFO L93 Difference]: Finished difference Result 126 states and 159 transitions. [2024-11-05 14:11:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-05 14:11:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 61 [2024-11-05 14:11:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:25,036 INFO L225 Difference]: With dead ends: 126 [2024-11-05 14:11:25,036 INFO L226 Difference]: Without dead ends: 124 [2024-11-05 14:11:25,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 90 SyntacticMatches, 13 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=113, Invalid=392, Unknown=1, NotChecked=0, Total=506 [2024-11-05 14:11:25,038 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 403 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 49 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2024-11-05 14:11:25,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 604 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 291 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2024-11-05 14:11:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-05 14:11:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 104. [2024-11-05 14:11:25,063 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) [2024-11-05 14:11:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 131 transitions. [2024-11-05 14:11:25,064 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 131 transitions. Word has length 61 [2024-11-05 14:11:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:25,065 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 131 transitions. [2024-11-05 14:11:25,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-05 14:11:25,066 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 131 transitions. [2024-11-05 14:11:25,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-05 14:11:25,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:25,067 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] [2024-11-05 14:11:25,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:25,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:25,268 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:25,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash -466492681, now seen corresponding path program 1 times [2024-11-05 14:11:25,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:25,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811873283] [2024-11-05 14:11:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:25,269 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:25,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:25,270 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:25,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 14:11:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:26,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:26,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-05 14:11:26,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-05 14:11:26,146 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:26,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811873283] [2024-11-05 14:11:26,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1811873283] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:26,146 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:26,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:26,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678308287] [2024-11-05 14:11:26,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:26,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:26,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:26,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:26,148 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) [2024-11-05 14:11:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:26,193 INFO L93 Difference]: Finished difference Result 171 states and 219 transitions. [2024-11-05 14:11:26,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:26,196 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 [2024-11-05 14:11:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:26,197 INFO L225 Difference]: With dead ends: 171 [2024-11-05 14:11:26,197 INFO L226 Difference]: Without dead ends: 107 [2024-11-05 14:11:26,198 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 [2024-11-05 14:11:26,198 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 [2024-11-05 14:11:26,199 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] [2024-11-05 14:11:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-05 14:11:26,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-05 14:11:26,219 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) [2024-11-05 14:11:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 134 transitions. [2024-11-05 14:11:26,220 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 134 transitions. Word has length 124 [2024-11-05 14:11:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:26,221 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 134 transitions. [2024-11-05 14:11:26,221 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) [2024-11-05 14:11:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 134 transitions. [2024-11-05 14:11:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-05 14:11:26,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:26,222 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] [2024-11-05 14:11:26,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 14:11:26,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:26,423 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:26,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash 57551859, now seen corresponding path program 1 times [2024-11-05 14:11:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:26,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861677869] [2024-11-05 14:11:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:26,424 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:26,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:26,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:26,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 14:11:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:27,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:27,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-05 14:11:27,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-05 14:11:27,372 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861677869] [2024-11-05 14:11:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [861677869] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:27,372 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100298818] [2024-11-05 14:11:27,372 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:27,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:27,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:27,374 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) [2024-11-05 14:11:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:27,448 INFO L93 Difference]: Finished difference Result 177 states and 225 transitions. [2024-11-05 14:11:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:27,451 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 [2024-11-05 14:11:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:27,452 INFO L225 Difference]: With dead ends: 177 [2024-11-05 14:11:27,452 INFO L226 Difference]: Without dead ends: 110 [2024-11-05 14:11:27,452 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 [2024-11-05 14:11:27,453 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 [2024-11-05 14:11:27,453 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] [2024-11-05 14:11:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-05 14:11:27,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-05 14:11:27,486 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) [2024-11-05 14:11:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 137 transitions. [2024-11-05 14:11:27,488 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 137 transitions. Word has length 128 [2024-11-05 14:11:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:27,488 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 137 transitions. [2024-11-05 14:11:27,488 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) [2024-11-05 14:11:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 137 transitions. [2024-11-05 14:11:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-05 14:11:27,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:27,493 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] [2024-11-05 14:11:27,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-05 14:11:27,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:27,694 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:27,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:27,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1200629359, now seen corresponding path program 1 times [2024-11-05 14:11:27,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:27,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34992348] [2024-11-05 14:11:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:27,695 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:27,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:27,697 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:27,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 14:11:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:28,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:28,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-05 14:11:28,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-05 14:11:28,635 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:28,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34992348] [2024-11-05 14:11:28,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [34992348] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:28,636 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:28,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:28,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366297535] [2024-11-05 14:11:28,636 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:28,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:28,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:28,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:28,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:28,637 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) [2024-11-05 14:11:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:28,700 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2024-11-05 14:11:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:28,703 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 [2024-11-05 14:11:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:28,705 INFO L225 Difference]: With dead ends: 183 [2024-11-05 14:11:28,705 INFO L226 Difference]: Without dead ends: 113 [2024-11-05 14:11:28,706 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 [2024-11-05 14:11:28,706 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 [2024-11-05 14:11:28,707 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] [2024-11-05 14:11:28,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-05 14:11:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-05 14:11:28,733 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) [2024-11-05 14:11:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 140 transitions. [2024-11-05 14:11:28,734 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 140 transitions. Word has length 132 [2024-11-05 14:11:28,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:28,734 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 140 transitions. [2024-11-05 14:11:28,734 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) [2024-11-05 14:11:28,734 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 140 transitions. [2024-11-05 14:11:28,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-05 14:11:28,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:28,736 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] [2024-11-05 14:11:28,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-05 14:11:28,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:28,937 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:28,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:28,937 INFO L85 PathProgramCache]: Analyzing trace with hash 197194347, now seen corresponding path program 1 times [2024-11-05 14:11:28,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:28,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652445678] [2024-11-05 14:11:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:28,937 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:28,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:28,939 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:28,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 14:11:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:29,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:29,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-05 14:11:29,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-05 14:11:29,953 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:29,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652445678] [2024-11-05 14:11:29,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [652445678] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:29,953 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:29,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:29,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478348598] [2024-11-05 14:11:29,953 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:29,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:29,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:29,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:29,954 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) [2024-11-05 14:11:29,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:29,999 INFO L93 Difference]: Finished difference Result 189 states and 237 transitions. [2024-11-05 14:11:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:30,001 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 [2024-11-05 14:11:30,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:30,002 INFO L225 Difference]: With dead ends: 189 [2024-11-05 14:11:30,002 INFO L226 Difference]: Without dead ends: 116 [2024-11-05 14:11:30,002 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 [2024-11-05 14:11:30,003 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 [2024-11-05 14:11:30,003 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] [2024-11-05 14:11:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-05 14:11:30,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-05 14:11:30,021 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) [2024-11-05 14:11:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2024-11-05 14:11:30,022 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 136 [2024-11-05 14:11:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:30,023 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2024-11-05 14:11:30,023 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) [2024-11-05 14:11:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2024-11-05 14:11:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-05 14:11:30,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:30,024 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] [2024-11-05 14:11:30,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:30,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:30,229 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:30,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:30,229 INFO L85 PathProgramCache]: Analyzing trace with hash -275664921, now seen corresponding path program 1 times [2024-11-05 14:11:30,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:30,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179010796] [2024-11-05 14:11:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:30,229 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:30,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:30,231 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:30,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-05 14:11:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:31,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:31,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-05 14:11:31,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-05 14:11:31,232 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:31,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179010796] [2024-11-05 14:11:31,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1179010796] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:31,232 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556458164] [2024-11-05 14:11:31,232 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:31,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:31,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:31,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:31,234 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) [2024-11-05 14:11:31,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:31,293 INFO L93 Difference]: Finished difference Result 195 states and 243 transitions. [2024-11-05 14:11:31,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:31,295 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 [2024-11-05 14:11:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:31,296 INFO L225 Difference]: With dead ends: 195 [2024-11-05 14:11:31,296 INFO L226 Difference]: Without dead ends: 119 [2024-11-05 14:11:31,297 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 [2024-11-05 14:11:31,297 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 [2024-11-05 14:11:31,297 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] [2024-11-05 14:11:31,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-05 14:11:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-05 14:11:31,320 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) [2024-11-05 14:11:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2024-11-05 14:11:31,321 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 140 [2024-11-05 14:11:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:31,321 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2024-11-05 14:11:31,321 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) [2024-11-05 14:11:31,321 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2024-11-05 14:11:31,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-05 14:11:31,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:31,323 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] [2024-11-05 14:11:31,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-05 14:11:31,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:31,523 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:31,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2131001629, now seen corresponding path program 1 times [2024-11-05 14:11:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:31,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777008426] [2024-11-05 14:11:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:31,524 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:31,525 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:31,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-05 14:11:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:32,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:32,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-05 14:11:32,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-05 14:11:32,570 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777008426] [2024-11-05 14:11:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1777008426] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:32,570 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:32,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039697752] [2024-11-05 14:11:32,570 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:32,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:32,574 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) [2024-11-05 14:11:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:32,715 INFO L93 Difference]: Finished difference Result 201 states and 249 transitions. [2024-11-05 14:11:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:32,720 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 [2024-11-05 14:11:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:32,722 INFO L225 Difference]: With dead ends: 201 [2024-11-05 14:11:32,722 INFO L226 Difference]: Without dead ends: 122 [2024-11-05 14:11:32,722 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 [2024-11-05 14:11:32,723 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:11:32,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:11:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-05 14:11:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-05 14:11:32,751 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) [2024-11-05 14:11:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 149 transitions. [2024-11-05 14:11:32,752 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 149 transitions. Word has length 144 [2024-11-05 14:11:32,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:32,752 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 149 transitions. [2024-11-05 14:11:32,752 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) [2024-11-05 14:11:32,752 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 149 transitions. [2024-11-05 14:11:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-05 14:11:32,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:32,754 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] [2024-11-05 14:11:32,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:32,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:32,954 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:32,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:32,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1717534559, now seen corresponding path program 1 times [2024-11-05 14:11:32,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:32,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835719750] [2024-11-05 14:11:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:32,955 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:32,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:32,956 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:32,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-05 14:11:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:33,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:11:33,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-05 14:11:33,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-05 14:11:34,061 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835719750] [2024-11-05 14:11:34,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [835719750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:11:34,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:11:34,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:11:34,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643010281] [2024-11-05 14:11:34,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:11:34,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:11:34,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:11:34,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:11:34,063 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) [2024-11-05 14:11:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:34,189 INFO L93 Difference]: Finished difference Result 208 states and 256 transitions. [2024-11-05 14:11:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:11:34,193 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 [2024-11-05 14:11:34,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:34,194 INFO L225 Difference]: With dead ends: 208 [2024-11-05 14:11:34,194 INFO L226 Difference]: Without dead ends: 126 [2024-11-05 14:11:34,195 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 [2024-11-05 14:11:34,195 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:11:34,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 459 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:11:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-05 14:11:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-05 14:11:34,233 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) [2024-11-05 14:11:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2024-11-05 14:11:34,234 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 148 [2024-11-05 14:11:34,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:34,234 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2024-11-05 14:11:34,235 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) [2024-11-05 14:11:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2024-11-05 14:11:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-05 14:11:34,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:34,236 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] [2024-11-05 14:11:34,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:34,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:34,437 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:34,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash 9888219, now seen corresponding path program 2 times [2024-11-05 14:11:34,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:34,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867922815] [2024-11-05 14:11:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:34,438 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:34,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:34,439 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:34,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-05 14:11:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:35,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:35,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-05 14:11:35,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-05 14:11:35,586 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:35,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867922815] [2024-11-05 14:11:35,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [867922815] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:35,586 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:35,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:35,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228548736] [2024-11-05 14:11:35,586 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:35,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:35,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:35,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:35,588 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) [2024-11-05 14:11:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:35,639 INFO L93 Difference]: Finished difference Result 215 states and 263 transitions. [2024-11-05 14:11:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:35,641 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 [2024-11-05 14:11:35,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:35,642 INFO L225 Difference]: With dead ends: 215 [2024-11-05 14:11:35,642 INFO L226 Difference]: Without dead ends: 129 [2024-11-05 14:11:35,642 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 [2024-11-05 14:11:35,643 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 [2024-11-05 14:11:35,643 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] [2024-11-05 14:11:35,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-05 14:11:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-05 14:11:35,663 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) [2024-11-05 14:11:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2024-11-05 14:11:35,664 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 152 [2024-11-05 14:11:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:35,664 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2024-11-05 14:11:35,665 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) [2024-11-05 14:11:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2024-11-05 14:11:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-05 14:11:35,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:35,666 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] [2024-11-05 14:11:35,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Ended with exit code 0 [2024-11-05 14:11:35,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:35,867 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:35,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash 454071767, now seen corresponding path program 1 times [2024-11-05 14:11:35,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:35,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138358207] [2024-11-05 14:11:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:35,868 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:35,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:35,870 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:35,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-05 14:11:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:37,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 1624 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:11:37,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-05 14:11:37,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-05 14:11:37,157 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:37,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138358207] [2024-11-05 14:11:37,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2138358207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:11:37,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:11:37,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:11:37,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495747647] [2024-11-05 14:11:37,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:11:37,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:11:37,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:37,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:11:37,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:11:37,159 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) [2024-11-05 14:11:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:37,279 INFO L93 Difference]: Finished difference Result 222 states and 270 transitions. [2024-11-05 14:11:37,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:11:37,281 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 [2024-11-05 14:11:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:37,282 INFO L225 Difference]: With dead ends: 222 [2024-11-05 14:11:37,282 INFO L226 Difference]: Without dead ends: 133 [2024-11-05 14:11:37,283 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 [2024-11-05 14:11:37,283 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:11:37,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 368 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:11:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-05 14:11:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-05 14:11:37,307 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) [2024-11-05 14:11:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2024-11-05 14:11:37,308 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 156 [2024-11-05 14:11:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:37,309 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2024-11-05 14:11:37,309 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) [2024-11-05 14:11:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2024-11-05 14:11:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-05 14:11:37,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:37,310 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] [2024-11-05 14:11:37,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:37,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:37,511 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:37,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:37,511 INFO L85 PathProgramCache]: Analyzing trace with hash 962063315, now seen corresponding path program 2 times [2024-11-05 14:11:37,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:37,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800827215] [2024-11-05 14:11:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:37,512 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:37,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:37,513 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:37,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-05 14:11:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:38,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:38,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-05 14:11:38,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-05 14:11:38,765 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800827215] [2024-11-05 14:11:38,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [800827215] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:38,765 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:38,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:38,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302884904] [2024-11-05 14:11:38,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:38,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:38,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:38,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:38,767 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) [2024-11-05 14:11:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:38,824 INFO L93 Difference]: Finished difference Result 229 states and 277 transitions. [2024-11-05 14:11:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:38,826 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 [2024-11-05 14:11:38,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:38,828 INFO L225 Difference]: With dead ends: 229 [2024-11-05 14:11:38,828 INFO L226 Difference]: Without dead ends: 136 [2024-11-05 14:11:38,829 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 [2024-11-05 14:11:38,830 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 [2024-11-05 14:11:38,830 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] [2024-11-05 14:11:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-05 14:11:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-05 14:11:38,856 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) [2024-11-05 14:11:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 163 transitions. [2024-11-05 14:11:38,857 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 163 transitions. Word has length 160 [2024-11-05 14:11:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:38,858 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 163 transitions. [2024-11-05 14:11:38,858 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) [2024-11-05 14:11:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 163 transitions. [2024-11-05 14:11:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-05 14:11:38,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:38,859 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] [2024-11-05 14:11:38,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:39,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:39,060 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:39,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:39,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1846430897, now seen corresponding path program 1 times [2024-11-05 14:11:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:39,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52094112] [2024-11-05 14:11:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:39,061 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:39,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:39,062 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:39,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-05 14:11:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:40,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:11:40,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-05 14:11:40,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-05 14:11:40,388 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52094112] [2024-11-05 14:11:40,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [52094112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:11:40,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:11:40,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:11:40,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870329783] [2024-11-05 14:11:40,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:11:40,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:11:40,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:40,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:11:40,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:11:40,391 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) [2024-11-05 14:11:40,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:40,496 INFO L93 Difference]: Finished difference Result 236 states and 284 transitions. [2024-11-05 14:11:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:11:40,499 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 [2024-11-05 14:11:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:40,500 INFO L225 Difference]: With dead ends: 236 [2024-11-05 14:11:40,500 INFO L226 Difference]: Without dead ends: 140 [2024-11-05 14:11:40,500 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 [2024-11-05 14:11:40,501 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 550 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 [2024-11-05 14:11:40,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 550 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:11:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-05 14:11:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-05 14:11:40,528 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) [2024-11-05 14:11:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 167 transitions. [2024-11-05 14:11:40,530 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 167 transitions. Word has length 164 [2024-11-05 14:11:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:40,530 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 167 transitions. [2024-11-05 14:11:40,530 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) [2024-11-05 14:11:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 167 transitions. [2024-11-05 14:11:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-05 14:11:40,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:40,531 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] [2024-11-05 14:11:40,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:40,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:40,732 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:40,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash -249340725, now seen corresponding path program 2 times [2024-11-05 14:11:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:40,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980382437] [2024-11-05 14:11:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:40,733 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:40,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:40,734 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:40,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-05 14:11:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:42,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:42,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-05 14:11:42,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-05 14:11:42,073 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:42,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980382437] [2024-11-05 14:11:42,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [980382437] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:42,073 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:42,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:42,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062392934] [2024-11-05 14:11:42,074 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:42,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:42,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:42,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:42,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:42,075 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) [2024-11-05 14:11:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:42,123 INFO L93 Difference]: Finished difference Result 243 states and 291 transitions. [2024-11-05 14:11:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:42,124 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 [2024-11-05 14:11:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:42,125 INFO L225 Difference]: With dead ends: 243 [2024-11-05 14:11:42,126 INFO L226 Difference]: Without dead ends: 143 [2024-11-05 14:11:42,126 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 [2024-11-05 14:11:42,126 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 [2024-11-05 14:11:42,127 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] [2024-11-05 14:11:42,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-05 14:11:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-05 14:11:42,148 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) [2024-11-05 14:11:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2024-11-05 14:11:42,149 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 168 [2024-11-05 14:11:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:42,149 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2024-11-05 14:11:42,149 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) [2024-11-05 14:11:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2024-11-05 14:11:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-05 14:11:42,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:42,150 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] [2024-11-05 14:11:42,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:42,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:42,350 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:42,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:42,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1686083527, now seen corresponding path program 1 times [2024-11-05 14:11:42,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:42,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669702516] [2024-11-05 14:11:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:42,351 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:42,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:42,352 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:42,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Waiting until timeout for monitored process [2024-11-05 14:11:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:43,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:11:43,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-05 14:11:43,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-05 14:11:43,810 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669702516] [2024-11-05 14:11:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1669702516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:11:43,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:11:43,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:11:43,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387455953] [2024-11-05 14:11:43,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:11:43,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:11:43,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:11:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:11:43,812 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) [2024-11-05 14:11:43,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:43,926 INFO L93 Difference]: Finished difference Result 250 states and 298 transitions. [2024-11-05 14:11:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:11:43,927 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 [2024-11-05 14:11:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:43,928 INFO L225 Difference]: With dead ends: 250 [2024-11-05 14:11:43,929 INFO L226 Difference]: Without dead ends: 147 [2024-11-05 14:11:43,929 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 [2024-11-05 14:11:43,929 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 [2024-11-05 14:11:43,930 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] [2024-11-05 14:11:43,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-05 14:11:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-05 14:11:43,953 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) [2024-11-05 14:11:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2024-11-05 14:11:43,954 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 172 [2024-11-05 14:11:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:43,955 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2024-11-05 14:11:43,955 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) [2024-11-05 14:11:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2024-11-05 14:11:43,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-05 14:11:43,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:43,955 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] [2024-11-05 14:11:43,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:44,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:44,156 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:44,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:44,157 INFO L85 PathProgramCache]: Analyzing trace with hash 151909571, now seen corresponding path program 2 times [2024-11-05 14:11:44,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:44,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351524859] [2024-11-05 14:11:44,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:44,157 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:44,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:44,158 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:44,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Waiting until timeout for monitored process [2024-11-05 14:11:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:45,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:45,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-05 14:11:45,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-05 14:11:45,624 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:45,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351524859] [2024-11-05 14:11:45,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [351524859] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:45,624 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:45,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:45,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425358462] [2024-11-05 14:11:45,625 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:45,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:45,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:45,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:45,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:45,626 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) [2024-11-05 14:11:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:45,690 INFO L93 Difference]: Finished difference Result 257 states and 305 transitions. [2024-11-05 14:11:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:45,692 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 [2024-11-05 14:11:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:45,693 INFO L225 Difference]: With dead ends: 257 [2024-11-05 14:11:45,693 INFO L226 Difference]: Without dead ends: 150 [2024-11-05 14:11:45,693 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 [2024-11-05 14:11:45,694 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 [2024-11-05 14:11:45,694 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] [2024-11-05 14:11:45,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-05 14:11:45,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-05 14:11:45,722 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) [2024-11-05 14:11:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2024-11-05 14:11:45,724 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 176 [2024-11-05 14:11:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:45,724 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2024-11-05 14:11:45,724 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) [2024-11-05 14:11:45,724 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2024-11-05 14:11:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-05 14:11:45,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:45,725 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] [2024-11-05 14:11:45,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Ended with exit code 0 [2024-11-05 14:11:45,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:45,926 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:45,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash -848886977, now seen corresponding path program 1 times [2024-11-05 14:11:45,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:45,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553365796] [2024-11-05 14:11:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:45,927 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:45,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:45,928 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:45,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (23)] Waiting until timeout for monitored process [2024-11-05 14:11:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:47,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:11:47,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-05 14:11:47,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-05 14:11:47,504 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:47,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553365796] [2024-11-05 14:11:47,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1553365796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:11:47,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:11:47,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:11:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647460101] [2024-11-05 14:11:47,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:11:47,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:11:47,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:11:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:11:47,506 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) [2024-11-05 14:11:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:47,647 INFO L93 Difference]: Finished difference Result 264 states and 312 transitions. [2024-11-05 14:11:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:11:47,649 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 [2024-11-05 14:11:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:47,651 INFO L225 Difference]: With dead ends: 264 [2024-11-05 14:11:47,651 INFO L226 Difference]: Without dead ends: 154 [2024-11-05 14:11:47,651 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 [2024-11-05 14:11:47,652 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 [2024-11-05 14:11:47,652 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] [2024-11-05 14:11:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-05 14:11:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-05 14:11:47,673 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) [2024-11-05 14:11:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2024-11-05 14:11:47,674 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 180 [2024-11-05 14:11:47,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:47,674 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2024-11-05 14:11:47,674 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) [2024-11-05 14:11:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2024-11-05 14:11:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-05 14:11:47,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:47,676 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] [2024-11-05 14:11:47,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (23)] Ended with exit code 0 [2024-11-05 14:11:47,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:47,876 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:47,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1990429765, now seen corresponding path program 2 times [2024-11-05 14:11:47,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:47,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573219029] [2024-11-05 14:11:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:47,877 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:47,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:47,878 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:47,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (24)] Waiting until timeout for monitored process [2024-11-05 14:11:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:49,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:49,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-05 14:11:49,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-11-05 14:11:49,471 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:49,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573219029] [2024-11-05 14:11:49,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [573219029] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:49,471 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:49,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:49,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029094014] [2024-11-05 14:11:49,472 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:49,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:49,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:49,473 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) [2024-11-05 14:11:49,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:49,553 INFO L93 Difference]: Finished difference Result 271 states and 319 transitions. [2024-11-05 14:11:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:49,555 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 [2024-11-05 14:11:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:49,557 INFO L225 Difference]: With dead ends: 271 [2024-11-05 14:11:49,557 INFO L226 Difference]: Without dead ends: 157 [2024-11-05 14:11:49,558 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 [2024-11-05 14:11:49,558 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 [2024-11-05 14:11:49,558 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] [2024-11-05 14:11:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-05 14:11:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-05 14:11:49,587 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) [2024-11-05 14:11:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-11-05 14:11:49,589 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 184 [2024-11-05 14:11:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:49,589 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-11-05 14:11:49,589 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) [2024-11-05 14:11:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-11-05 14:11:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-05 14:11:49,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:49,590 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] [2024-11-05 14:11:49,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (24)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:49,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:49,791 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:49,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash 881112503, now seen corresponding path program 1 times [2024-11-05 14:11:49,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:49,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795807174] [2024-11-05 14:11:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:49,792 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:49,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:49,793 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:49,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (25)] Waiting until timeout for monitored process [2024-11-05 14:11:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:51,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:11:51,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-05 14:11:51,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-11-05 14:11:51,547 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:51,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795807174] [2024-11-05 14:11:51,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1795807174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:11:51,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:11:51,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:11:51,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956059009] [2024-11-05 14:11:51,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:11:51,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:11:51,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:51,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:11:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:11:51,549 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) [2024-11-05 14:11:51,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:51,673 INFO L93 Difference]: Finished difference Result 278 states and 326 transitions. [2024-11-05 14:11:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:11:51,675 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 [2024-11-05 14:11:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:51,677 INFO L225 Difference]: With dead ends: 278 [2024-11-05 14:11:51,677 INFO L226 Difference]: Without dead ends: 161 [2024-11-05 14:11:51,677 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 [2024-11-05 14:11:51,678 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:11:51,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 459 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:11:51,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-05 14:11:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-05 14:11:51,703 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) [2024-11-05 14:11:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 188 transitions. [2024-11-05 14:11:51,705 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 188 transitions. Word has length 188 [2024-11-05 14:11:51,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:51,705 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 188 transitions. [2024-11-05 14:11:51,706 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) [2024-11-05 14:11:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 188 transitions. [2024-11-05 14:11:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-05 14:11:51,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:51,707 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] [2024-11-05 14:11:51,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (25)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:51,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:51,908 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:51,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1383884365, now seen corresponding path program 2 times [2024-11-05 14:11:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:51,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431526535] [2024-11-05 14:11:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:51,909 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:51,910 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:51,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (26)] Waiting until timeout for monitored process [2024-11-05 14:11:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:53,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:53,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-05 14:11:53,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-05 14:11:53,576 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:53,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431526535] [2024-11-05 14:11:53,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [431526535] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:53,577 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:53,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:53,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436685527] [2024-11-05 14:11:53,577 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:53,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:53,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:53,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:53,578 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) [2024-11-05 14:11:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:53,635 INFO L93 Difference]: Finished difference Result 285 states and 333 transitions. [2024-11-05 14:11:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:53,637 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 [2024-11-05 14:11:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:53,638 INFO L225 Difference]: With dead ends: 285 [2024-11-05 14:11:53,638 INFO L226 Difference]: Without dead ends: 164 [2024-11-05 14:11:53,639 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 [2024-11-05 14:11:53,639 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 [2024-11-05 14:11:53,640 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] [2024-11-05 14:11:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-05 14:11:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-05 14:11:53,670 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) [2024-11-05 14:11:53,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 191 transitions. [2024-11-05 14:11:53,671 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 191 transitions. Word has length 192 [2024-11-05 14:11:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:53,672 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 191 transitions. [2024-11-05 14:11:53,672 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) [2024-11-05 14:11:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 191 transitions. [2024-11-05 14:11:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-05 14:11:53,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:53,673 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] [2024-11-05 14:11:53,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (26)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:53,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:53,874 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:53,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1159368913, now seen corresponding path program 1 times [2024-11-05 14:11:53,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:53,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745818569] [2024-11-05 14:11:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:53,875 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:53,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:53,877 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:53,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (27)] Waiting until timeout for monitored process [2024-11-05 14:11:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:55,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:11:55,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-05 14:11:55,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-05 14:11:55,671 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:55,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745818569] [2024-11-05 14:11:55,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1745818569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:11:55,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:11:55,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:11:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496899474] [2024-11-05 14:11:55,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:11:55,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:11:55,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:55,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:11:55,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:11:55,673 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) [2024-11-05 14:11:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:55,763 INFO L93 Difference]: Finished difference Result 292 states and 340 transitions. [2024-11-05 14:11:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:11:55,765 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 [2024-11-05 14:11:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:55,766 INFO L225 Difference]: With dead ends: 292 [2024-11-05 14:11:55,766 INFO L226 Difference]: Without dead ends: 168 [2024-11-05 14:11:55,766 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 [2024-11-05 14:11:55,767 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 [2024-11-05 14:11:55,767 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] [2024-11-05 14:11:55,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-05 14:11:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-05 14:11:55,791 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) [2024-11-05 14:11:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 195 transitions. [2024-11-05 14:11:55,792 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 195 transitions. Word has length 196 [2024-11-05 14:11:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:55,793 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 195 transitions. [2024-11-05 14:11:55,793 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) [2024-11-05 14:11:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 195 transitions. [2024-11-05 14:11:55,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-05 14:11:55,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:55,794 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] [2024-11-05 14:11:55,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (27)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:55,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:55,995 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:55,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:55,995 INFO L85 PathProgramCache]: Analyzing trace with hash -265804117, now seen corresponding path program 2 times [2024-11-05 14:11:55,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:55,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957192151] [2024-11-05 14:11:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:55,996 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:55,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:55,997 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:55,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (28)] Waiting until timeout for monitored process [2024-11-05 14:11:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:57,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:57,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-05 14:11:57,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:11:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-05 14:11:57,808 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:57,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957192151] [2024-11-05 14:11:57,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1957192151] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:11:57,808 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:11:57,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:11:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212765552] [2024-11-05 14:11:57,809 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:11:57,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:11:57,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:11:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:11:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:11:57,810 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) [2024-11-05 14:11:57,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:11:57,870 INFO L93 Difference]: Finished difference Result 299 states and 347 transitions. [2024-11-05 14:11:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:11:57,870 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 [2024-11-05 14:11:57,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:11:57,872 INFO L225 Difference]: With dead ends: 299 [2024-11-05 14:11:57,872 INFO L226 Difference]: Without dead ends: 171 [2024-11-05 14:11:57,872 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 [2024-11-05 14:11:57,873 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 [2024-11-05 14:11:57,874 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] [2024-11-05 14:11:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-05 14:11:57,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-05 14:11:57,899 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) [2024-11-05 14:11:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 198 transitions. [2024-11-05 14:11:57,900 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 198 transitions. Word has length 200 [2024-11-05 14:11:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:11:57,900 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 198 transitions. [2024-11-05 14:11:57,900 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) [2024-11-05 14:11:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 198 transitions. [2024-11-05 14:11:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-05 14:11:57,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:11:57,902 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] [2024-11-05 14:11:57,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (28)] Forceful destruction successful, exit code 0 [2024-11-05 14:11:58,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:58,102 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:11:58,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:11:58,103 INFO L85 PathProgramCache]: Analyzing trace with hash -960106585, now seen corresponding path program 1 times [2024-11-05 14:11:58,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:11:58,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010833852] [2024-11-05 14:11:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:11:58,103 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:11:58,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:58,104 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:11:58,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (29)] Waiting until timeout for monitored process [2024-11-05 14:11:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:11:59,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:11:59,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:11:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-05 14:11:59,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:12:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-05 14:12:00,038 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:12:00,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010833852] [2024-11-05 14:12:00,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2010833852] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:12:00,038 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:12:00,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:12:00,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865416508] [2024-11-05 14:12:00,038 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:12:00,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:12:00,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:12:00,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:12:00,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:12:00,040 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) [2024-11-05 14:12:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:12:00,101 INFO L93 Difference]: Finished difference Result 305 states and 353 transitions. [2024-11-05 14:12:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:12:00,101 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 [2024-11-05 14:12:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:12:00,103 INFO L225 Difference]: With dead ends: 305 [2024-11-05 14:12:00,103 INFO L226 Difference]: Without dead ends: 174 [2024-11-05 14:12:00,103 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 [2024-11-05 14:12:00,104 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 [2024-11-05 14:12:00,104 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] [2024-11-05 14:12:00,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-05 14:12:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-05 14:12:00,133 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) [2024-11-05 14:12:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 201 transitions. [2024-11-05 14:12:00,135 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 201 transitions. Word has length 204 [2024-11-05 14:12:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:12:00,135 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 201 transitions. [2024-11-05 14:12:00,135 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) [2024-11-05 14:12:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 201 transitions. [2024-11-05 14:12:00,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-05 14:12:00,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:12:00,137 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] [2024-11-05 14:12:00,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (29)] Forceful destruction successful, exit code 0 [2024-11-05 14:12:00,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:12:00,338 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:12:00,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:12:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1004530211, now seen corresponding path program 1 times [2024-11-05 14:12:00,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:12:00,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491716695] [2024-11-05 14:12:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:12:00,339 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:12:00,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:12:00,341 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:12:00,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (30)] Waiting until timeout for monitored process [2024-11-05 14:12:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:12:02,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:12:02,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:12:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-05 14:12:02,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:12:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-05 14:12:02,329 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:12:02,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491716695] [2024-11-05 14:12:02,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [491716695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:12:02,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:12:02,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:12:02,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127636952] [2024-11-05 14:12:02,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:12:02,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:12:02,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:12:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:12:02,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:12:02,331 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) [2024-11-05 14:12:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:12:02,427 INFO L93 Difference]: Finished difference Result 312 states and 360 transitions. [2024-11-05 14:12:02,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:12:02,428 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 [2024-11-05 14:12:02,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:12:02,430 INFO L225 Difference]: With dead ends: 312 [2024-11-05 14:12:02,430 INFO L226 Difference]: Without dead ends: 178 [2024-11-05 14:12:02,430 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 [2024-11-05 14:12:02,431 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:12:02,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 368 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:12:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-05 14:12:02,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-05 14:12:02,463 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) [2024-11-05 14:12:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2024-11-05 14:12:02,464 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 208 [2024-11-05 14:12:02,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:12:02,464 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2024-11-05 14:12:02,465 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) [2024-11-05 14:12:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2024-11-05 14:12:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-05 14:12:02,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:12:02,466 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] [2024-11-05 14:12:02,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (30)] Ended with exit code 0 [2024-11-05 14:12:02,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:12:02,667 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:12:02,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:12:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1178617503, now seen corresponding path program 2 times [2024-11-05 14:12:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:12:02,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248909643] [2024-11-05 14:12:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:12:02,667 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:12:02,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:12:02,669 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:12:02,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (31)] Waiting until timeout for monitored process [2024-11-05 14:12:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:12:04,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:12:04,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:12:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-05 14:12:04,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:12:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-05 14:12:04,739 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:12:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248909643] [2024-11-05 14:12:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1248909643] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:12:04,740 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:12:04,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:12:04,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142702224] [2024-11-05 14:12:04,740 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:12:04,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:12:04,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:12:04,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:12:04,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:12:04,742 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) [2024-11-05 14:12:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:12:04,790 INFO L93 Difference]: Finished difference Result 319 states and 367 transitions. [2024-11-05 14:12:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:12:04,791 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 [2024-11-05 14:12:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:12:04,793 INFO L225 Difference]: With dead ends: 319 [2024-11-05 14:12:04,793 INFO L226 Difference]: Without dead ends: 181 [2024-11-05 14:12:04,793 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 [2024-11-05 14:12:04,794 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 [2024-11-05 14:12:04,794 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] [2024-11-05 14:12:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-05 14:12:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-05 14:12:04,831 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) [2024-11-05 14:12:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 208 transitions. [2024-11-05 14:12:04,832 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 208 transitions. Word has length 212 [2024-11-05 14:12:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:12:04,833 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 208 transitions. [2024-11-05 14:12:04,833 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) [2024-11-05 14:12:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 208 transitions. [2024-11-05 14:12:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-05 14:12:04,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:12:04,834 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] [2024-11-05 14:12:04,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (31)] Ended with exit code 0 [2024-11-05 14:12:05,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:12:05,035 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:12:05,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:12:05,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1868237669, now seen corresponding path program 1 times [2024-11-05 14:12:05,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:12:05,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416090654] [2024-11-05 14:12:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:12:05,037 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:12:05,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:12:05,039 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:12:05,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (32)] Waiting until timeout for monitored process [2024-11-05 14:12:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:12:07,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:12:07,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:12:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-05 14:12:07,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:12:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-05 14:12:07,147 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:12:07,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416090654] [2024-11-05 14:12:07,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [416090654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:12:07,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:12:07,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:12:07,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896653358] [2024-11-05 14:12:07,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:12:07,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:12:07,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:12:07,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:12:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:12:07,149 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) [2024-11-05 14:12:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:12:07,258 INFO L93 Difference]: Finished difference Result 326 states and 374 transitions. [2024-11-05 14:12:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:12:07,259 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 [2024-11-05 14:12:07,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:12:07,261 INFO L225 Difference]: With dead ends: 326 [2024-11-05 14:12:07,261 INFO L226 Difference]: Without dead ends: 185 [2024-11-05 14:12:07,261 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 [2024-11-05 14:12:07,262 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 [2024-11-05 14:12:07,262 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] [2024-11-05 14:12:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-05 14:12:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-05 14:12:07,291 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) [2024-11-05 14:12:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 212 transitions. [2024-11-05 14:12:07,292 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 212 transitions. Word has length 216 [2024-11-05 14:12:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:12:07,292 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 212 transitions. [2024-11-05 14:12:07,293 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) [2024-11-05 14:12:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 212 transitions. [2024-11-05 14:12:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-05 14:12:07,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:12:07,294 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] [2024-11-05 14:12:07,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (32)] Forceful destruction successful, exit code 0 [2024-11-05 14:12:07,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:12:07,494 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:12:07,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:12:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1664465769, now seen corresponding path program 2 times [2024-11-05 14:12:07,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:12:07,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829036054] [2024-11-05 14:12:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:12:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:12:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:12:07,497 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:12:07,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (33)] Waiting until timeout for monitored process [2024-11-05 14:12:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:12:09,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 1816 conjuncts, 672 conjuncts are in the unsatisfiable core [2024-11-05 14:12:09,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:12:09,810 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 [2024-11-05 14:12:10,129 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 [2024-11-05 14:12:10,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:12:10,393 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 [2024-11-05 14:12:10,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:12:10,701 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 [2024-11-05 14:12:11,165 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 [2024-11-05 14:12:11,564 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 [2024-11-05 14:12:12,359 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 [2024-11-05 14:12:13,255 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 [2024-11-05 14:12:14,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:12:14,165 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 [2024-11-05 14:12:15,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:12:15,234 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