/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/bitvector/num_conversion_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-10-31 17:23:56,093 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 17:23:56,152 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 17:23:56,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 17:23:56,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 17:23:56,206 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 17:23:56,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 17:23:56,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 17:23:56,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 17:23:56,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 17:23:56,208 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 17:23:56,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 17:23:56,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 17:23:56,210 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 17:23:56,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 17:23:56,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 17:23:56,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 17:23:56,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 17:23:56,211 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 17:23:56,212 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 17:23:56,212 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 17:23:56,216 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 17:23:56,217 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 17:23:56,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 17:23:56,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 17:23:56,217 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 17:23:56,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 17:23:56,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 17:23:56,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 17:23:56,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 17:23:56,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 17:23:56,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 17:23:56,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 17:23:56,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 17:23:56,219 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 17:23:56,220 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 17:23:56,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 17:23:56,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 17:23:56,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 17:23:56,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 17:23:56,221 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 17:23:56,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:56,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 17:23:56,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 17:23:56,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 17:23:56,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 17:23:56,539 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 17:23:56,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/num_conversion_1.c [2024-10-31 17:23:57,908 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 17:23:58,075 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 17:23:58,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/num_conversion_1.c [2024-10-31 17:23:58,081 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f118c3d/e520da2801034343bc1887745b665209/FLAG246922bae [2024-10-31 17:23:58,092 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f118c3d/e520da2801034343bc1887745b665209 [2024-10-31 17:23:58,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 17:23:58,095 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-31 17:23:58,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 17:23:58,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 17:23:58,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 17:23:58,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7725123a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58, skipping insertion in model container [2024-10-31 17:23:58,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 17:23:58,264 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/num_conversion_1.c[673,686] [2024-10-31 17:23:58,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 17:23:58,293 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 17:23:58,305 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/num_conversion_1.c[673,686] [2024-10-31 17:23:58,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 17:23:58,328 INFO L204 MainTranslator]: Completed translation [2024-10-31 17:23:58,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58 WrapperNode [2024-10-31 17:23:58,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 17:23:58,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 17:23:58,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 17:23:58,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 17:23:58,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,357 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-10-31 17:23:58,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 17:23:58,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 17:23:58,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 17:23:58,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 17:23:58,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,371 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,381 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]. [2024-10-31 17:23:58,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 17:23:58,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 17:23:58,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 17:23:58,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 17:23:58,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (1/1) ... [2024-10-31 17:23:58,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 17:23:58,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:58,431 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) [2024-10-31 17:23:58,437 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 [2024-10-31 17:23:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 17:23:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 17:23:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 17:23:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 17:23:58,521 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 17:23:58,523 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 17:23:58,661 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-31 17:23:58,661 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 17:23:58,672 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 17:23:58,673 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 17:23:58,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 05:23:58 BoogieIcfgContainer [2024-10-31 17:23:58,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 17:23:58,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 17:23:58,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 17:23:58,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 17:23:58,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 05:23:58" (1/3) ... [2024-10-31 17:23:58,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0d52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 05:23:58, skipping insertion in model container [2024-10-31 17:23:58,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:58" (2/3) ... [2024-10-31 17:23:58,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0d52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 05:23:58, skipping insertion in model container [2024-10-31 17:23:58,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 05:23:58" (3/3) ... [2024-10-31 17:23:58,683 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2024-10-31 17:23:58,699 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 17:23:58,699 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 17:23:58,760 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 17:23:58,766 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;@5c32fc6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 17:23:58,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 17:23:58,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 17:23:58,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:23:58,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 17:23:58,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:23:58,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:23:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2024-10-31 17:23:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:23:58,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656164083] [2024-10-31 17:23:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:23:58,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:58,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:58,796 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) [2024-10-31 17:23:58,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 17:23:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:23:58,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 17:23:58,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:23:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:58,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:23:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:58,914 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:23:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656164083] [2024-10-31 17:23:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1656164083] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:23:58,915 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:23:58,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-10-31 17:23:58,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745112151] [2024-10-31 17:23:58,917 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:23:58,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 17:23:58,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:23:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 17:23:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 17:23:58,943 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:58,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:23:58,955 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-10-31 17:23:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 17:23:58,957 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-31 17:23:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:23:58,963 INFO L225 Difference]: With dead ends: 21 [2024-10-31 17:23:58,963 INFO L226 Difference]: Without dead ends: 9 [2024-10-31 17:23:58,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 17:23:58,971 INFO L432 NwaCegarLoop]: 14 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, 14 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 [2024-10-31 17:23:58,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:23:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-31 17:23:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-10-31 17:23:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-10-31 17:23:59,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2024-10-31 17:23:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:23:59,001 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-10-31 17:23:59,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-10-31 17:23:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 17:23:59,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:23:59,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 17:23:59,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 17:23:59,206 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 [2024-10-31 17:23:59,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:23:59,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:23:59,208 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2024-10-31 17:23:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:23:59,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941827859] [2024-10-31 17:23:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:23:59,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:59,212 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) [2024-10-31 17:23:59,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 17:23:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:23:59,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:23:59,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:23:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:59,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:23:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:59,304 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:23:59,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941827859] [2024-10-31 17:23:59,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [941827859] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:23:59,305 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:23:59,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 17:23:59,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485763461] [2024-10-31 17:23:59,306 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:23:59,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 17:23:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:23:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 17:23:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:23:59,308 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:59,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:23:59,330 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2024-10-31 17:23:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 17:23:59,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-31 17:23:59,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:23:59,347 INFO L225 Difference]: With dead ends: 17 [2024-10-31 17:23:59,347 INFO L226 Difference]: Without dead ends: 13 [2024-10-31 17:23:59,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:23:59,348 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:23:59,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:23:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-31 17:23:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-31 17:23:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-10-31 17:23:59,352 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2024-10-31 17:23:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:23:59,353 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-10-31 17:23:59,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-10-31 17:23:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 17:23:59,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:23:59,354 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 17:23:59,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 17:23:59,557 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 [2024-10-31 17:23:59,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:23:59,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:23:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 1 times [2024-10-31 17:23:59,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:23:59,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700252101] [2024-10-31 17:23:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:23:59,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:59,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:59,564 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) [2024-10-31 17:23:59,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 17:23:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:23:59,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 17:23:59,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:23:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 17:23:59,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:23:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 17:23:59,750 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:23:59,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700252101] [2024-10-31 17:23:59,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1700252101] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:23:59,750 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:23:59,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-10-31 17:23:59,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555227073] [2024-10-31 17:23:59,751 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:23:59,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 17:23:59,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:23:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 17:23:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 17:23:59,752 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:23:59,805 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2024-10-31 17:23:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 17:23:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-31 17:23:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:23:59,807 INFO L225 Difference]: With dead ends: 22 [2024-10-31 17:23:59,807 INFO L226 Difference]: Without dead ends: 13 [2024-10-31 17:23:59,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 17:23:59,808 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:23:59,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:23:59,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-31 17:23:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-31 17:23:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-10-31 17:23:59,812 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2024-10-31 17:23:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:23:59,813 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-10-31 17:23:59,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-10-31 17:23:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 17:23:59,814 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:23:59,814 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 17:23:59,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 17:24:00,014 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 [2024-10-31 17:24:00,015 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:00,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1664855024, now seen corresponding path program 1 times [2024-10-31 17:24:00,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:00,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064584795] [2024-10-31 17:24:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:00,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:00,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:00,018 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) [2024-10-31 17:24:00,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 17:24:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:00,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 17:24:00,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:24:00,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:24:00,190 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:00,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064584795] [2024-10-31 17:24:00,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1064584795] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:24:00,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:24:00,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-10-31 17:24:00,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708956191] [2024-10-31 17:24:00,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:24:00,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 17:24:00,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 17:24:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-31 17:24:00,196 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:00,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:00,286 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2024-10-31 17:24:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 17:24:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-31 17:24:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:00,287 INFO L225 Difference]: With dead ends: 29 [2024-10-31 17:24:00,287 INFO L226 Difference]: Without dead ends: 25 [2024-10-31 17:24:00,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-10-31 17:24:00,288 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:00,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:24:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-31 17:24:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-10-31 17:24:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:00,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-10-31 17:24:00,296 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 12 [2024-10-31 17:24:00,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:00,296 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-10-31 17:24:00,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:00,297 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-10-31 17:24:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-31 17:24:00,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:00,298 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 17:24:00,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 17:24:00,498 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 [2024-10-31 17:24:00,499 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:00,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2085526576, now seen corresponding path program 2 times [2024-10-31 17:24:00,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:00,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562983561] [2024-10-31 17:24:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:00,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:00,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:00,501 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) [2024-10-31 17:24:00,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 17:24:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:00,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 17:24:00,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 17:24:00,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 17:24:00,809 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562983561] [2024-10-31 17:24:00,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1562983561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:24:00,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:24:00,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-31 17:24:00,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554489705] [2024-10-31 17:24:00,810 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:24:00,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 17:24:00,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:00,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 17:24:00,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-31 17:24:00,814 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:00,929 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2024-10-31 17:24:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 17:24:00,930 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-31 17:24:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:00,930 INFO L225 Difference]: With dead ends: 42 [2024-10-31 17:24:00,930 INFO L226 Difference]: Without dead ends: 27 [2024-10-31 17:24:00,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-31 17:24:00,932 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:00,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 39 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:24:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-31 17:24:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-10-31 17:24:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-10-31 17:24:00,944 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 24 [2024-10-31 17:24:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:00,945 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-10-31 17:24:00,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-10-31 17:24:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-31 17:24:00,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:00,946 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-31 17:24:00,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 17:24:01,149 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 [2024-10-31 17:24:01,149 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:01,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:01,150 INFO L85 PathProgramCache]: Analyzing trace with hash -986835344, now seen corresponding path program 3 times [2024-10-31 17:24:01,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:01,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031362450] [2024-10-31 17:24:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:01,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:01,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:01,152 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) [2024-10-31 17:24:01,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 17:24:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:01,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 17:24:01,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:24:01,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:24:01,558 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031362450] [2024-10-31 17:24:01,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1031362450] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:24:01,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:24:01,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-10-31 17:24:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014383706] [2024-10-31 17:24:01,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:24:01,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-31 17:24:01,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-31 17:24:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-10-31 17:24:01,563 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:01,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:01,875 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2024-10-31 17:24:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 17:24:01,875 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-31 17:24:01,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:01,876 INFO L225 Difference]: With dead ends: 53 [2024-10-31 17:24:01,876 INFO L226 Difference]: Without dead ends: 49 [2024-10-31 17:24:01,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-10-31 17:24:01,877 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:01,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 92 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:24:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-31 17:24:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-31 17:24:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2024-10-31 17:24:01,893 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 24 [2024-10-31 17:24:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:01,894 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2024-10-31 17:24:01,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2024-10-31 17:24:01,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-31 17:24:01,895 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:01,895 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2024-10-31 17:24:01,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 17:24:02,095 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 [2024-10-31 17:24:02,096 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:02,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash -29656432, now seen corresponding path program 4 times [2024-10-31 17:24:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618217807] [2024-10-31 17:24:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:02,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:02,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:02,100 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) [2024-10-31 17:24:02,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 17:24:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:02,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-31 17:24:02,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-31 17:24:02,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-31 17:24:03,242 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:03,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618217807] [2024-10-31 17:24:03,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1618217807] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:24:03,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:24:03,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-10-31 17:24:03,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993992810] [2024-10-31 17:24:03,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:24:03,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-31 17:24:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:03,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-31 17:24:03,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-10-31 17:24:03,246 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:06,864 INFO L93 Difference]: Finished difference Result 188 states and 242 transitions. [2024-10-31 17:24:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-31 17:24:06,865 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-31 17:24:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:06,868 INFO L225 Difference]: With dead ends: 188 [2024-10-31 17:24:06,868 INFO L226 Difference]: Without dead ends: 154 [2024-10-31 17:24:06,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=707, Invalid=3199, Unknown=0, NotChecked=0, Total=3906 [2024-10-31 17:24:06,872 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:06,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 79 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 17:24:06,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-10-31 17:24:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 142. [2024-10-31 17:24:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.2907801418439717) internal successors, (182), 141 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 182 transitions. [2024-10-31 17:24:06,907 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 182 transitions. Word has length 30 [2024-10-31 17:24:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:06,907 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 182 transitions. [2024-10-31 17:24:06,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 182 transitions. [2024-10-31 17:24:06,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-31 17:24:06,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:06,908 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2024-10-31 17:24:06,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 17:24:07,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:07,115 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:07,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1250207246, now seen corresponding path program 5 times [2024-10-31 17:24:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:07,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761226295] [2024-10-31 17:24:07,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:07,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:07,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:07,118 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:07,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 17:24:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:07,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 17:24:07,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 17:24:07,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 17:24:07,336 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:07,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761226295] [2024-10-31 17:24:07,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1761226295] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:24:07,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:24:07,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-10-31 17:24:07,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904393984] [2024-10-31 17:24:07,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:24:07,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 17:24:07,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 17:24:07,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-31 17:24:07,339 INFO L87 Difference]: Start difference. First operand 142 states and 182 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:07,404 INFO L93 Difference]: Finished difference Result 142 states and 182 transitions. [2024-10-31 17:24:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 17:24:07,404 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-31 17:24:07,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:07,404 INFO L225 Difference]: With dead ends: 142 [2024-10-31 17:24:07,404 INFO L226 Difference]: Without dead ends: 0 [2024-10-31 17:24:07,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-10-31 17:24:07,407 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:07,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:24:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-31 17:24:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-31 17:24:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-31 17:24:07,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2024-10-31 17:24:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:07,409 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 17:24:07,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:24:07,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-31 17:24:07,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-31 17:24:07,411 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 17:24:07,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-31 17:24:07,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:07,615 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2024-10-31 17:24:07,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-31 17:24:07,792 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 17:24:07,803 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2024-10-31 17:24:07,803 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2024-10-31 17:24:07,803 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2024-10-31 17:24:07,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 05:24:07 BoogieIcfgContainer [2024-10-31 17:24:07,806 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 17:24:07,807 INFO L158 Benchmark]: Toolchain (without parser) took 9711.45ms. Allocated memory was 206.6MB in the beginning and 268.4MB in the end (delta: 61.9MB). Free memory was 170.9MB in the beginning and 175.6MB in the end (delta: -4.8MB). Peak memory consumption was 57.6MB. Max. memory is 8.0GB. [2024-10-31 17:24:07,807 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 183.3MB. There was no memory consumed. Max. memory is 8.0GB. [2024-10-31 17:24:07,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.09ms. Allocated memory is still 206.6MB. Free memory was 170.4MB in the beginning and 158.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2024-10-31 17:24:07,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.60ms. Allocated memory is still 206.6MB. Free memory was 157.8MB in the beginning and 156.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-10-31 17:24:07,807 INFO L158 Benchmark]: Boogie Preprocessor took 38.12ms. Allocated memory is still 206.6MB. Free memory was 156.7MB in the beginning and 154.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-10-31 17:24:07,808 INFO L158 Benchmark]: RCFGBuilder took 276.98ms. Allocated memory is still 206.6MB. Free memory was 154.6MB in the beginning and 144.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2024-10-31 17:24:07,808 INFO L158 Benchmark]: TraceAbstraction took 9128.55ms. Allocated memory was 206.6MB in the beginning and 268.4MB in the end (delta: 61.9MB). Free memory was 144.1MB in the beginning and 175.6MB in the end (delta: -31.5MB). Peak memory consumption was 31.4MB. Max. memory is 8.0GB. [2024-10-31 17:24:07,809 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 183.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.09ms. Allocated memory is still 206.6MB. Free memory was 170.4MB in the beginning and 158.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.60ms. Allocated memory is still 206.6MB. Free memory was 157.8MB in the beginning and 156.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.12ms. Allocated memory is still 206.6MB. Free memory was 156.7MB in the beginning and 154.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 276.98ms. Allocated memory is still 206.6MB. Free memory was 154.6MB in the beginning and 144.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 9128.55ms. Allocated memory was 206.6MB in the beginning and 268.4MB in the end (delta: 61.9MB). Free memory was 144.1MB in the beginning and 175.6MB in the end (delta: -31.5MB). Peak memory consumption was 31.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.9s, OverallIterations: 8, TraceHistogramMax: 8, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 328 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 255 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 832 IncrementalHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 73 mSDtfsCounter, 832 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 272 ConstructedInterpolants, 0 QuantifiedInterpolants, 2880 SizeOfPredicates, 10 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 244/592 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((((((((y == 1) && (x == 37)) && (c == 1)) || (((c == 3) && (x == 37)) && (y == 5))) || (((x == 37) && (c == 4)) && (y == 5))) || (((c == 5) && (x == 37)) && (y == 5))) || (((y == 0) && (c == 0)) && (x == 37))) || (((y == 1) && (c == 2)) && (x == 37))) || ((x == 37) && (y == 37))) RESULT: Ultimate proved your program to be correct! [2024-10-31 17:24:07,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...