/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-22.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:33:37,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:33:37,348 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 21:33:37,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:33:37,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:33:37,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:33:37,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:33:37,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:33:37,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:33:37,386 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:33:37,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:33:37,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:33:37,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:33:37,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:33:37,388 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:33:37,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:33:37,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:33:37,389 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:33:37,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:33:37,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:33:37,394 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:33:37,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:33:37,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:33:37,395 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:33:37,395 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:33:37,396 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:33:37,396 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:33:37,396 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:33:37,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:33:37,397 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:33:37,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:33:37,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:33:37,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:33:37,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:33:37,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:33:37,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:33:37,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:33:37,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:33:37,401 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:33:37,401 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:33:37,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:33:37,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:33:37,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:33:37,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:33:37,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:37,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:33:37,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:33:37,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:33:37,658 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:33:37,659 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:33:37,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-22.i [2024-11-02 21:33:39,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:33:39,284 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:33:39,284 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-22.i [2024-11-02 21:33:39,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1b80e9e/642590fdfa5146f7ad9a29be8c76632d/FLAG8670a606c [2024-11-02 21:33:39,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1b80e9e/642590fdfa5146f7ad9a29be8c76632d [2024-11-02 21:33:39,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:33:39,314 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:33:39,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:33:39,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:33:39,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:33:39,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dbd5529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39, skipping insertion in model container [2024-11-02 21:33:39,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:33:39,521 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-22.i[916,929] [2024-11-02 21:33:39,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:33:39,638 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:33:39,649 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-22.i[916,929] [2024-11-02 21:33:39,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:33:39,747 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:33:39,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39 WrapperNode [2024-11-02 21:33:39,750 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:33:39,751 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:33:39,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:33:39,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:33:39,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,825 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 211 [2024-11-02 21:33:39,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:33:39,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:33:39,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:33:39,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:33:39,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,868 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-02 21:33:39,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:33:39,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:33:39,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:33:39,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:33:39,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (1/1) ... [2024-11-02 21:33:39,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:33:39,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:33:39,947 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) [2024-11-02 21:33:39,950 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 [2024-11-02 21:33:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:33:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:33:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 21:33:39,977 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 21:33:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:33:39,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:33:40,098 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:33:40,100 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:33:41,076 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-02 21:33:41,076 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:33:41,095 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:33:41,095 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 21:33:41,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:33:41 BoogieIcfgContainer [2024-11-02 21:33:41,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:33:41,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:33:41,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:33:41,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:33:41,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:33:39" (1/3) ... [2024-11-02 21:33:41,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f0fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:33:41, skipping insertion in model container [2024-11-02 21:33:41,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:33:39" (2/3) ... [2024-11-02 21:33:41,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f0fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:33:41, skipping insertion in model container [2024-11-02 21:33:41,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:33:41" (3/3) ... [2024-11-02 21:33:41,106 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-22.i [2024-11-02 21:33:41,120 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:33:41,120 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:33:41,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:33:41,179 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;@766ce395, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:33:41,179 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:33:41,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 55 states have internal predecessors, (76), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-02 21:33:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-02 21:33:41,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:33:41,208 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:33:41,208 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:33:41,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:33:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1843546310, now seen corresponding path program 1 times [2024-11-02 21:33:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:33:41,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968010442] [2024-11-02 21:33:41,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:33:41,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:41,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:33:41,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:33:41,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 21:33:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:33:41,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 21:33:41,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:33:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-02 21:33:41,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:33:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-02 21:33:41,853 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:33:41,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968010442] [2024-11-02 21:33:41,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1968010442] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 21:33:41,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 21:33:41,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 21:33:41,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914242975] [2024-11-02 21:33:41,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 21:33:41,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 21:33:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:33:41,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 21:33:41,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:33:41,909 INFO L87 Difference]: Start difference. First operand has 88 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 55 states have internal predecessors, (76), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-02 21:33:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:33:41,948 INFO L93 Difference]: Finished difference Result 169 states and 301 transitions. [2024-11-02 21:33:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 21:33:41,950 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 194 [2024-11-02 21:33:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:33:41,961 INFO L225 Difference]: With dead ends: 169 [2024-11-02 21:33:41,961 INFO L226 Difference]: Without dead ends: 84 [2024-11-02 21:33:41,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:33:41,968 INFO L432 NwaCegarLoop]: 131 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, 131 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 [2024-11-02 21:33:41,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:33:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-02 21:33:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-02 21:33:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-02 21:33:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 131 transitions. [2024-11-02 21:33:42,014 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 131 transitions. Word has length 194 [2024-11-02 21:33:42,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:33:42,015 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 131 transitions. [2024-11-02 21:33:42,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-02 21:33:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 131 transitions. [2024-11-02 21:33:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-02 21:33:42,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:33:42,023 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:33:42,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 21:33:42,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:42,228 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:33:42,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:33:42,229 INFO L85 PathProgramCache]: Analyzing trace with hash -850663032, now seen corresponding path program 1 times [2024-11-02 21:33:42,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:33:42,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117381220] [2024-11-02 21:33:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:33:42,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:42,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:33:42,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:33:42,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 21:33:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:33:42,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:33:42,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:33:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:33:43,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:33:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:33:43,516 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:33:43,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117381220] [2024-11-02 21:33:43,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1117381220] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:33:43,516 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:33:43,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2024-11-02 21:33:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814538995] [2024-11-02 21:33:43,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:33:43,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 21:33:43,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:33:43,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 21:33:43,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:33:43,520 INFO L87 Difference]: Start difference. First operand 84 states and 131 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-02 21:33:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:33:44,589 INFO L93 Difference]: Finished difference Result 268 states and 420 transitions. [2024-11-02 21:33:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 21:33:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 194 [2024-11-02 21:33:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:33:44,612 INFO L225 Difference]: With dead ends: 268 [2024-11-02 21:33:44,612 INFO L226 Difference]: Without dead ends: 187 [2024-11-02 21:33:44,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-02 21:33:44,615 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 284 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:33:44,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 493 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-02 21:33:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-02 21:33:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 162. [2024-11-02 21:33:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 97 states have (on average 1.3505154639175259) internal successors, (131), 97 states have internal predecessors, (131), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-02 21:33:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 255 transitions. [2024-11-02 21:33:44,673 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 255 transitions. Word has length 194 [2024-11-02 21:33:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:33:44,675 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 255 transitions. [2024-11-02 21:33:44,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-02 21:33:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 255 transitions. [2024-11-02 21:33:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-02 21:33:44,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:33:44,682 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:33:44,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 21:33:44,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:44,883 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:33:44,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:33:44,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1316621499, now seen corresponding path program 1 times [2024-11-02 21:33:44,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:33:44,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590826118] [2024-11-02 21:33:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:33:44,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:44,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:33:44,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:33:44,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 21:33:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:33:45,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:33:45,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:33:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:33:45,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:33:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:33:45,897 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:33:45,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590826118] [2024-11-02 21:33:45,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1590826118] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:33:45,898 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:33:45,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 6 [2024-11-02 21:33:45,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160042401] [2024-11-02 21:33:45,898 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:33:45,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 21:33:45,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:33:45,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 21:33:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 21:33:45,900 INFO L87 Difference]: Start difference. First operand 162 states and 255 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-02 21:33:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:33:47,498 INFO L93 Difference]: Finished difference Result 534 states and 839 transitions. [2024-11-02 21:33:47,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 21:33:47,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 195 [2024-11-02 21:33:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:33:47,516 INFO L225 Difference]: With dead ends: 534 [2024-11-02 21:33:47,516 INFO L226 Difference]: Without dead ends: 375 [2024-11-02 21:33:47,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 384 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:33:47,518 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 161 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:33:47,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 491 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-02 21:33:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-02 21:33:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 321. [2024-11-02 21:33:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 192 states have (on average 1.34375) internal successors, (258), 192 states have internal predecessors, (258), 124 states have call successors, (124), 4 states have call predecessors, (124), 4 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-02 21:33:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 506 transitions. [2024-11-02 21:33:47,615 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 506 transitions. Word has length 195 [2024-11-02 21:33:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:33:47,616 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 506 transitions. [2024-11-02 21:33:47,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-02 21:33:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 506 transitions. [2024-11-02 21:33:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-02 21:33:47,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:33:47,618 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:33:47,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 21:33:47,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:47,819 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:33:47,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:33:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -30024758, now seen corresponding path program 1 times [2024-11-02 21:33:47,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:33:47,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528421779] [2024-11-02 21:33:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:33:47,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:47,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:33:47,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:33:47,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 21:33:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:33:47,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 21:33:48,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:33:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:33:48,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:33:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:33:48,184 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:33:48,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528421779] [2024-11-02 21:33:48,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [528421779] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:33:48,184 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:33:48,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-02 21:33:48,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436342559] [2024-11-02 21:33:48,185 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:33:48,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 21:33:48,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:33:48,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 21:33:48,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:33:48,189 INFO L87 Difference]: Start difference. First operand 321 states and 506 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-02 21:33:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:33:49,630 INFO L93 Difference]: Finished difference Result 757 states and 1192 transitions. [2024-11-02 21:33:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 21:33:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2024-11-02 21:33:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:33:49,638 INFO L225 Difference]: With dead ends: 757 [2024-11-02 21:33:49,638 INFO L226 Difference]: Without dead ends: 439 [2024-11-02 21:33:49,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 21:33:49,641 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 50 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-02 21:33:49,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 400 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-02 21:33:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-02 21:33:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 393. [2024-11-02 21:33:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 264 states have (on average 1.378787878787879) internal successors, (364), 264 states have internal predecessors, (364), 124 states have call successors, (124), 4 states have call predecessors, (124), 4 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-02 21:33:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 612 transitions. [2024-11-02 21:33:49,712 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 612 transitions. Word has length 196 [2024-11-02 21:33:49,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:33:49,713 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 612 transitions. [2024-11-02 21:33:49,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-02 21:33:49,713 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 612 transitions. [2024-11-02 21:33:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-02 21:33:49,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:33:49,716 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:33:49,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 21:33:49,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:49,918 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:33:49,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:33:49,918 INFO L85 PathProgramCache]: Analyzing trace with hash 671039820, now seen corresponding path program 1 times [2024-11-02 21:33:49,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:33:49,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727052914] [2024-11-02 21:33:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:33:49,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:49,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:33:49,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:33:49,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 21:33:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:33:50,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 21:33:50,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:33:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:33:51,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:33:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:33:51,971 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:33:51,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727052914] [2024-11-02 21:33:51,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [727052914] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:33:51,972 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:33:51,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2024-11-02 21:33:51,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731773758] [2024-11-02 21:33:51,973 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:33:51,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 21:33:51,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:33:51,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 21:33:51,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:33:51,975 INFO L87 Difference]: Start difference. First operand 393 states and 612 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-02 21:33:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:33:55,731 INFO L93 Difference]: Finished difference Result 1379 states and 2128 transitions. [2024-11-02 21:33:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 21:33:55,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 196 [2024-11-02 21:33:55,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:33:55,752 INFO L225 Difference]: With dead ends: 1379 [2024-11-02 21:33:55,752 INFO L226 Difference]: Without dead ends: 989 [2024-11-02 21:33:55,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-02 21:33:55,755 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 312 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:33:55,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 769 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-02 21:33:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-11-02 21:33:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 777. [2024-11-02 21:33:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 520 states have (on average 1.3576923076923078) internal successors, (706), 520 states have internal predecessors, (706), 248 states have call successors, (248), 8 states have call predecessors, (248), 8 states have return successors, (248), 248 states have call predecessors, (248), 248 states have call successors, (248) [2024-11-02 21:33:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1202 transitions. [2024-11-02 21:33:55,874 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1202 transitions. Word has length 196 [2024-11-02 21:33:55,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:33:55,875 INFO L471 AbstractCegarLoop]: Abstraction has 777 states and 1202 transitions. [2024-11-02 21:33:55,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-02 21:33:55,875 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1202 transitions. [2024-11-02 21:33:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-02 21:33:55,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:33:55,879 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:33:55,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-02 21:33:56,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:56,080 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:33:56,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:33:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash -917308082, now seen corresponding path program 1 times [2024-11-02 21:33:56,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:33:56,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677279360] [2024-11-02 21:33:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:33:56,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:33:56,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:33:56,083 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:33:56,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 21:33:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:33:56,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-02 21:33:56,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:33:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 839 proven. 48 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2024-11-02 21:33:57,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:33:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 126 proven. 51 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2024-11-02 21:33:59,369 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:33:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677279360] [2024-11-02 21:33:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [677279360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:33:59,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:33:59,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2024-11-02 21:33:59,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117102397] [2024-11-02 21:33:59,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:33:59,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-02 21:33:59,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:33:59,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-02 21:33:59,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2024-11-02 21:33:59,372 INFO L87 Difference]: Start difference. First operand 777 states and 1202 transitions. Second operand has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 6 states have call successors, (62), 4 states have call predecessors, (62), 7 states have return successors, (62), 6 states have call predecessors, (62), 6 states have call successors, (62) [2024-11-02 21:34:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:34:05,068 INFO L93 Difference]: Finished difference Result 2109 states and 3227 transitions. [2024-11-02 21:34:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-02 21:34:05,087 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 6 states have call successors, (62), 4 states have call predecessors, (62), 7 states have return successors, (62), 6 states have call predecessors, (62), 6 states have call successors, (62) Word has length 196 [2024-11-02 21:34:05,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:34:05,097 INFO L225 Difference]: With dead ends: 2109 [2024-11-02 21:34:05,097 INFO L226 Difference]: Without dead ends: 1335 [2024-11-02 21:34:05,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 374 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=570, Invalid=1322, Unknown=0, NotChecked=0, Total=1892 [2024-11-02 21:34:05,101 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 617 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-02 21:34:05,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 911 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-02 21:34:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2024-11-02 21:34:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 875. [2024-11-02 21:34:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 583 states have (on average 1.346483704974271) internal successors, (785), 583 states have internal predecessors, (785), 279 states have call successors, (279), 12 states have call predecessors, (279), 12 states have return successors, (279), 279 states have call predecessors, (279), 279 states have call successors, (279) [2024-11-02 21:34:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1343 transitions. [2024-11-02 21:34:05,274 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1343 transitions. Word has length 196 [2024-11-02 21:34:05,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:34:05,275 INFO L471 AbstractCegarLoop]: Abstraction has 875 states and 1343 transitions. [2024-11-02 21:34:05,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 6 states have call successors, (62), 4 states have call predecessors, (62), 7 states have return successors, (62), 6 states have call predecessors, (62), 6 states have call successors, (62) [2024-11-02 21:34:05,275 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1343 transitions. [2024-11-02 21:34:05,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-02 21:34:05,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:34:05,278 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:34:05,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-02 21:34:05,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:34:05,482 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:34:05,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:34:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash 258387045, now seen corresponding path program 1 times [2024-11-02 21:34:05,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:34:05,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004055245] [2024-11-02 21:34:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:34:05,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:34:05,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:34:05,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:34:05,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 21:34:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:34:05,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-02 21:34:05,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:34:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 1185 proven. 84 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-11-02 21:34:08,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:34:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 429 proven. 138 refuted. 0 times theorem prover too weak. 1293 trivial. 0 not checked. [2024-11-02 21:34:31,419 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:34:31,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004055245] [2024-11-02 21:34:31,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004055245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:34:31,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:34:31,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 54 [2024-11-02 21:34:31,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021856773] [2024-11-02 21:34:31,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:34:31,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-02 21:34:31,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:34:31,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-02 21:34:31,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=2185, Unknown=0, NotChecked=0, Total=2862 [2024-11-02 21:34:31,423 INFO L87 Difference]: Start difference. First operand 875 states and 1343 transitions. Second operand has 54 states, 51 states have (on average 2.6666666666666665) internal successors, (136), 48 states have internal predecessors, (136), 16 states have call successors, (62), 9 states have call predecessors, (62), 20 states have return successors, (62), 18 states have call predecessors, (62), 16 states have call successors, (62) [2024-11-02 21:34:49,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:35:05,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]