./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:58:54,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:58:54,328 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:58:54,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:58:54,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:58:54,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:58:54,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:58:54,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:58:54,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:58:54,372 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:58:54,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:58:54,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:58:54,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:58:54,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:58:54,374 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:58:54,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:58:54,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:58:54,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:58:54,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:58:54,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:58:54,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:58:54,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:58:54,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:58:54,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:58:54,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:58:54,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:58:54,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:58:54,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:58:54,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:58:54,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:58:54,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:58:54,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:58:54,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:58:54,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:58:54,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:58:54,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:58:54,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:58:54,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:58:54,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:58:54,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:58:54,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:58:54,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:58:54,382 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 [2024-10-10 21:58:54,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:58:54,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:58:54,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:58:54,612 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:58:54,612 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:58:54,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-1.i [2024-10-10 21:58:55,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:58:56,138 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:58:56,138 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-1.i [2024-10-10 21:58:56,146 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3f665b0d1/5be9b6f032284d10bf6b4954af95b6cf/FLAG7e1cf3c78 [2024-10-10 21:58:56,551 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3f665b0d1/5be9b6f032284d10bf6b4954af95b6cf [2024-10-10 21:58:56,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:58:56,555 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:58:56,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:58:56,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:58:56,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:58:56,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c1db7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56, skipping insertion in model container [2024-10-10 21:58:56,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,581 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:58:56,728 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-1.i[1287,1300] [2024-10-10 21:58:56,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:58:56,740 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:58:56,762 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-1.i[1287,1300] [2024-10-10 21:58:56,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:58:56,780 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:58:56,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56 WrapperNode [2024-10-10 21:58:56,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:58:56,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:58:56,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:58:56,781 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:58:56,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,833 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-10-10 21:58:56,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:58:56,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:58:56,836 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:58:56,836 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:58:56,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,866 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-10-10 21:58:56,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:58:56,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:58:56,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:58:56,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:58:56,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (1/1) ... [2024-10-10 21:58:56,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:58:56,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:56,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 21:58:56,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 21:58:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:58:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:58:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:58:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:58:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:58:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:58:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:58:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:58:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:58:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:58:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:58:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2024-10-10 21:58:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2024-10-10 21:58:57,032 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:58:57,033 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:58:57,166 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-10-10 21:58:57,166 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:58:57,193 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:58:57,195 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-10 21:58:57,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:58:57 BoogieIcfgContainer [2024-10-10 21:58:57,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:58:57,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:58:57,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:58:57,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:58:57,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:58:56" (1/3) ... [2024-10-10 21:58:57,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28808621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:58:57, skipping insertion in model container [2024-10-10 21:58:57,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:58:56" (2/3) ... [2024-10-10 21:58:57,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28808621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:58:57, skipping insertion in model container [2024-10-10 21:58:57,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:58:57" (3/3) ... [2024-10-10 21:58:57,205 INFO L112 eAbstractionObserver]: Analyzing ICFG sep05-1.i [2024-10-10 21:58:57,219 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:58:57,220 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:58:57,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:58:57,285 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;@48a29313, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:58:57,287 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:58:57,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:58:57,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 21:58:57,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:57,299 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:57,300 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:57,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash -110337137, now seen corresponding path program 1 times [2024-10-10 21:58:57,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:57,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5711212] [2024-10-10 21:58:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:57,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:57,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-10 21:58:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:57,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 21:58:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:57,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 21:58:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 21:58:57,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:57,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5711212] [2024-10-10 21:58:57,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5711212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:58:57,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:58:57,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 21:58:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461811845] [2024-10-10 21:58:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:58:57,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:58:57,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:58:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:58:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:58:57,582 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-10 21:58:57,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:58:57,613 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2024-10-10 21:58:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:58:57,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-10-10 21:58:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:58:57,621 INFO L225 Difference]: With dead ends: 43 [2024-10-10 21:58:57,621 INFO L226 Difference]: Without dead ends: 21 [2024-10-10 21:58:57,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:58:57,626 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:58:57,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:58:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-10 21:58:57,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-10 21:58:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:58:57,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-10-10 21:58:57,710 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 25 [2024-10-10 21:58:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:58:57,715 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-10-10 21:58:57,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-10 21:58:57,716 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-10-10 21:58:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-10 21:58:57,717 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:57,717 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:57,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:58:57,717 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:57,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1417820460, now seen corresponding path program 1 times [2024-10-10 21:58:57,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:57,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304323034] [2024-10-10 21:58:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:57,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:57,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 21:58:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:57,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 21:58:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:57,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-10 21:58:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 21:58:57,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:57,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304323034] [2024-10-10 21:58:57,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304323034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:58:57,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856101136] [2024-10-10 21:58:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:57,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:57,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:57,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:58:57,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 21:58:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:57,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:58:57,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:58:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-10 21:58:57,943 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:58:57,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856101136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:58:57,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:58:57,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-10 21:58:57,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379918041] [2024-10-10 21:58:57,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:58:57,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:58:57,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:58:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:58:57,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:58:57,946 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 21:58:57,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:58:57,963 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2024-10-10 21:58:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:58:57,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-10-10 21:58:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:58:57,965 INFO L225 Difference]: With dead ends: 40 [2024-10-10 21:58:57,965 INFO L226 Difference]: Without dead ends: 24 [2024-10-10 21:58:57,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:58:57,966 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:58:57,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:58:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-10 21:58:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-10-10 21:58:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:58:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-10-10 21:58:57,976 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 26 [2024-10-10 21:58:57,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:58:57,977 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-10-10 21:58:57,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 21:58:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-10-10 21:58:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-10 21:58:57,979 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:57,980 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:57,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 21:58:58,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:58,184 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:58,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:58,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1584330763, now seen corresponding path program 1 times [2024-10-10 21:58:58,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:58,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247412139] [2024-10-10 21:58:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:58,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 21:58:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 21:58:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-10 21:58:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-10 21:58:58,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:58,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247412139] [2024-10-10 21:58:58,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247412139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:58:58,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640622024] [2024-10-10 21:58:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:58,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:58,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:58,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:58:58,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 21:58:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:58:58,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:58:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-10 21:58:58,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:58:58,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640622024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:58:58,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:58:58,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 21:58:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800968686] [2024-10-10 21:58:58,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:58:58,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:58:58,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:58:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:58:58,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:58:58,394 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 21:58:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:58:58,406 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2024-10-10 21:58:58,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:58:58,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-10-10 21:58:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:58:58,407 INFO L225 Difference]: With dead ends: 36 [2024-10-10 21:58:58,408 INFO L226 Difference]: Without dead ends: 23 [2024-10-10 21:58:58,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:58:58,409 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:58:58,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:58:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-10 21:58:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-10 21:58:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:58:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-10-10 21:58:58,413 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 35 [2024-10-10 21:58:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:58:58,414 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-10-10 21:58:58,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 21:58:58,415 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-10-10 21:58:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-10 21:58:58,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:58,416 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:58,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 21:58:58,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:58,620 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:58,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:58,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1105168803, now seen corresponding path program 1 times [2024-10-10 21:58:58,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:58,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048148412] [2024-10-10 21:58:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 21:58:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 21:58:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-10 21:58:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 21:58:58,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:58,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048148412] [2024-10-10 21:58:58,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048148412] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:58:58,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036600561] [2024-10-10 21:58:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:58,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:58,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:58,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:58:58,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 21:58:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:58,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:58:58,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:58:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-10 21:58:58,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:58:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-10 21:58:58,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036600561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:58:58,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:58:58,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 9 [2024-10-10 21:58:58,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524631923] [2024-10-10 21:58:58,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:58:58,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-10 21:58:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:58:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-10 21:58:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:58:58,859 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-10 21:58:58,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:58:58,891 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2024-10-10 21:58:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 21:58:58,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 36 [2024-10-10 21:58:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:58:58,892 INFO L225 Difference]: With dead ends: 51 [2024-10-10 21:58:58,892 INFO L226 Difference]: Without dead ends: 31 [2024-10-10 21:58:58,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:58:58,902 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:58:58,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 89 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:58:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-10 21:58:58,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-10-10 21:58:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:58:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-10-10 21:58:58,907 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 36 [2024-10-10 21:58:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:58:58,907 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-10-10 21:58:58,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-10 21:58:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-10-10 21:58:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-10 21:58:58,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:58,909 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:58,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-10 21:58:59,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:59,113 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:59,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:59,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1956133820, now seen corresponding path program 2 times [2024-10-10 21:58:59,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:59,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977650001] [2024-10-10 21:58:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:59,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:59,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-10 21:58:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:59,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 21:58:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:59,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-10 21:58:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-10 21:58:59,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:59,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977650001] [2024-10-10 21:58:59,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977650001] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:58:59,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919003921] [2024-10-10 21:58:59,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:58:59,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:59,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:59,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:58:59,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 21:58:59,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:58:59,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:58:59,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:58:59,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:58:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 21:58:59,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:58:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 21:58:59,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919003921] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:58:59,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:58:59,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 9 [2024-10-10 21:58:59,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423952211] [2024-10-10 21:58:59,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:58:59,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-10 21:58:59,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:58:59,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-10 21:58:59,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:58:59,465 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-10 21:58:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:58:59,509 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2024-10-10 21:58:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-10 21:58:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2024-10-10 21:58:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:58:59,512 INFO L225 Difference]: With dead ends: 54 [2024-10-10 21:58:59,512 INFO L226 Difference]: Without dead ends: 31 [2024-10-10 21:58:59,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:58:59,513 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:58:59,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:58:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-10 21:58:59,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-10 21:58:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:58:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-10-10 21:58:59,517 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 48 [2024-10-10 21:58:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:58:59,517 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-10-10 21:58:59,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-10 21:58:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-10-10 21:58:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-10 21:58:59,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:58:59,519 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:58:59,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 21:58:59,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:59,723 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:58:59,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:58:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash -316440052, now seen corresponding path program 3 times [2024-10-10 21:58:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:58:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023674150] [2024-10-10 21:58:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:58:59,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:58:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:59,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 21:58:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:59,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-10 21:58:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:59,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-10 21:58:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:58:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-10 21:58:59,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:58:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023674150] [2024-10-10 21:58:59,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023674150] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:58:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225141774] [2024-10-10 21:58:59,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:58:59,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:58:59,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:58:59,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:58:59,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 21:58:59,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 21:58:59,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:58:59,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:58:59,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:58:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-10 21:58:59,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:58:59,988 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-10 21:58:59,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225141774] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:58:59,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:58:59,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-10 21:58:59,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535224421] [2024-10-10 21:58:59,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:58:59,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-10 21:58:59,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:58:59,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-10 21:58:59,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:58:59,990 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-10 21:59:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:59:00,036 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-10-10 21:59:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-10 21:59:00,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2024-10-10 21:59:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:59:00,038 INFO L225 Difference]: With dead ends: 60 [2024-10-10 21:59:00,038 INFO L226 Difference]: Without dead ends: 38 [2024-10-10 21:59:00,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:59:00,039 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:59:00,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 134 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:59:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-10 21:59:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-10-10 21:59:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:59:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-10-10 21:59:00,044 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 50 [2024-10-10 21:59:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:59:00,044 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-10-10 21:59:00,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-10 21:59:00,045 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-10-10 21:59:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-10 21:59:00,046 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:59:00,046 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:59:00,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 21:59:00,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:00,247 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:59:00,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:59:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash 743614421, now seen corresponding path program 4 times [2024-10-10 21:59:00,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:59:00,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913121612] [2024-10-10 21:59:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:59:00,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:59:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:00,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 21:59:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:00,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-10 21:59:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:00,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-10 21:59:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-10 21:59:00,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:59:00,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913121612] [2024-10-10 21:59:00,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913121612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:59:00,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851408914] [2024-10-10 21:59:00,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:59:00,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:00,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:59:00,393 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:59:00,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 21:59:00,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:59:00,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:59:00,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 21:59:00,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:59:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-10 21:59:00,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:59:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-10 21:59:00,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851408914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:59:00,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:59:00,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-10-10 21:59:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782945426] [2024-10-10 21:59:00,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:59:00,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 21:59:00,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:59:00,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 21:59:00,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:59:00,523 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 21:59:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:59:00,549 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2024-10-10 21:59:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 21:59:00,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-10 21:59:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:59:00,550 INFO L225 Difference]: With dead ends: 69 [2024-10-10 21:59:00,550 INFO L226 Difference]: Without dead ends: 42 [2024-10-10 21:59:00,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:59:00,551 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:59:00,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 72 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:59:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-10 21:59:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-10-10 21:59:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 21:59:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-10-10 21:59:00,559 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 61 [2024-10-10 21:59:00,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:59:00,559 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-10-10 21:59:00,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 21:59:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-10-10 21:59:00,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-10 21:59:00,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:59:00,565 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:59:00,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 21:59:00,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-10 21:59:00,766 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:59:00,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:59:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1197367627, now seen corresponding path program 5 times [2024-10-10 21:59:00,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:59:00,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751533844] [2024-10-10 21:59:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:59:00,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:59:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:01,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 21:59:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:02,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-10 21:59:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:02,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-10 21:59:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-10 21:59:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:59:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751533844] [2024-10-10 21:59:02,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751533844] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:59:02,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723581556] [2024-10-10 21:59:02,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:59:02,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:02,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:59:02,360 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:59:02,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 21:59:02,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-10-10 21:59:02,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:59:02,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-10-10 21:59:02,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:59:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-10 21:59:02,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:59:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-10 21:59:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723581556] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:59:03,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:59:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-10 21:59:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866171033] [2024-10-10 21:59:03,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:59:03,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-10 21:59:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:59:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-10 21:59:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-10-10 21:59:03,076 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 23 states, 21 states have (on average 2.380952380952381) internal successors, (50), 19 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-10 21:59:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:59:03,346 INFO L93 Difference]: Finished difference Result 114 states and 149 transitions. [2024-10-10 21:59:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-10 21:59:03,346 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.380952380952381) internal successors, (50), 19 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 79 [2024-10-10 21:59:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:59:03,349 INFO L225 Difference]: With dead ends: 114 [2024-10-10 21:59:03,349 INFO L226 Difference]: Without dead ends: 110 [2024-10-10 21:59:03,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-10-10 21:59:03,350 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 18 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:59:03,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 573 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:59:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-10 21:59:03,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2024-10-10 21:59:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 86 states have internal predecessors, (111), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-10 21:59:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 125 transitions. [2024-10-10 21:59:03,360 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 125 transitions. Word has length 79 [2024-10-10 21:59:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:59:03,361 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 125 transitions. [2024-10-10 21:59:03,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.380952380952381) internal successors, (50), 19 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-10 21:59:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 125 transitions. [2024-10-10 21:59:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-10 21:59:03,363 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:59:03,363 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:59:03,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 21:59:03,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:03,568 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:59:03,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:59:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2006714253, now seen corresponding path program 1 times [2024-10-10 21:59:03,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:59:03,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15563880] [2024-10-10 21:59:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:59:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:59:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:04,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 21:59:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:04,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-10 21:59:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:05,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-10 21:59:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 177 proven. 160 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-10 21:59:05,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:59:05,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15563880] [2024-10-10 21:59:05,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15563880] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:59:05,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210740914] [2024-10-10 21:59:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:59:05,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:05,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:59:05,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:59:05,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 21:59:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:05,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-10 21:59:05,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:59:05,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2024-10-10 21:59:05,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-10 21:59:05,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-10 21:59:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 6 proven. 316 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-10 21:59:06,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:59:06,787 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-10-10 21:59:06,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2024-10-10 21:59:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 100 proven. 219 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-10 21:59:06,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210740914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:59:06,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:59:06,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 17] total 49 [2024-10-10 21:59:06,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574876121] [2024-10-10 21:59:06,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:59:06,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-10 21:59:06,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:59:06,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-10 21:59:06,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2190, Unknown=0, NotChecked=0, Total=2352 [2024-10-10 21:59:06,872 INFO L87 Difference]: Start difference. First operand 93 states and 125 transitions. Second operand has 49 states, 47 states have (on average 2.5319148936170213) internal successors, (119), 46 states have internal predecessors, (119), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-10 21:59:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:59:11,925 INFO L93 Difference]: Finished difference Result 745 states and 1077 transitions. [2024-10-10 21:59:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-10-10 21:59:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 2.5319148936170213) internal successors, (119), 46 states have internal predecessors, (119), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 79 [2024-10-10 21:59:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:59:11,930 INFO L225 Difference]: With dead ends: 745 [2024-10-10 21:59:11,930 INFO L226 Difference]: Without dead ends: 598 [2024-10-10 21:59:11,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6167 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1480, Invalid=18826, Unknown=0, NotChecked=0, Total=20306 [2024-10-10 21:59:11,937 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 272 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-10 21:59:11,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 698 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-10 21:59:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-10-10 21:59:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 316. [2024-10-10 21:59:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 294 states have (on average 1.3401360544217686) internal successors, (394), 300 states have internal predecessors, (394), 10 states have call successors, (10), 5 states have call predecessors, (10), 11 states have return successors, (34), 10 states have call predecessors, (34), 10 states have call successors, (34) [2024-10-10 21:59:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 438 transitions. [2024-10-10 21:59:11,989 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 438 transitions. Word has length 79 [2024-10-10 21:59:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:59:11,990 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 438 transitions. [2024-10-10 21:59:11,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 2.5319148936170213) internal successors, (119), 46 states have internal predecessors, (119), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-10 21:59:11,990 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 438 transitions. [2024-10-10 21:59:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-10 21:59:11,993 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:59:11,993 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:59:12,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 21:59:12,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:12,195 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:59:12,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:59:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash -496303049, now seen corresponding path program 2 times [2024-10-10 21:59:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:59:12,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209753651] [2024-10-10 21:59:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:59:12,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:59:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:13,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 21:59:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:13,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-10 21:59:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:13,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-10 21:59:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:13,943 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 88 proven. 262 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-10 21:59:13,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:59:13,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209753651] [2024-10-10 21:59:13,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209753651] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:59:13,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428378041] [2024-10-10 21:59:13,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:59:13,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:13,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:59:13,946 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:59:13,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 21:59:14,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:59:14,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:59:14,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-10-10 21:59:14,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:59:14,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-10 21:59:14,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:59:14,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2024-10-10 21:59:14,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:59:14,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2024-10-10 21:59:14,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:59:14,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 39 [2024-10-10 21:59:14,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:59:14,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 39 [2024-10-10 21:59:14,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:59:14,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 32 [2024-10-10 21:59:14,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:59:14,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 18 [2024-10-10 21:59:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 12 proven. 348 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-10 21:59:14,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:59:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 115 proven. 227 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:59:15,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428378041] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:59:15,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:59:15,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 21] total 60 [2024-10-10 21:59:15,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338079336] [2024-10-10 21:59:15,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:59:15,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-10 21:59:15,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:59:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-10 21:59:15,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3309, Unknown=0, NotChecked=0, Total=3540 [2024-10-10 21:59:15,827 INFO L87 Difference]: Start difference. First operand 316 states and 438 transitions. Second operand has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 59 states have internal predecessors, (133), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 3 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-10 21:59:18,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:59:18,588 INFO L93 Difference]: Finished difference Result 1726 states and 2523 transitions. [2024-10-10 21:59:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-10 21:59:18,588 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 59 states have internal predecessors, (133), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 3 states have call predecessors, (9), 6 states have call successors, (9) Word has length 79 [2024-10-10 21:59:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:59:18,594 INFO L225 Difference]: With dead ends: 1726 [2024-10-10 21:59:18,594 INFO L226 Difference]: Without dead ends: 1323 [2024-10-10 21:59:18,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2247 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=829, Invalid=7913, Unknown=0, NotChecked=0, Total=8742 [2024-10-10 21:59:18,597 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 125 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-10 21:59:18,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 852 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-10 21:59:18,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2024-10-10 21:59:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 722. [2024-10-10 21:59:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 671 states have (on average 1.3666169895678093) internal successors, (917), 691 states have internal predecessors, (917), 19 states have call successors, (19), 11 states have call predecessors, (19), 31 states have return successors, (87), 19 states have call predecessors, (87), 19 states have call successors, (87) [2024-10-10 21:59:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1023 transitions. [2024-10-10 21:59:18,710 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1023 transitions. Word has length 79 [2024-10-10 21:59:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:59:18,710 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 1023 transitions. [2024-10-10 21:59:18,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 59 states have internal predecessors, (133), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 3 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-10 21:59:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1023 transitions. [2024-10-10 21:59:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-10 21:59:18,714 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:59:18,714 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:59:18,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 21:59:18,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:18,918 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:59:18,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:59:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2086482419, now seen corresponding path program 3 times [2024-10-10 21:59:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:59:18,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646937731] [2024-10-10 21:59:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:59:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:59:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:20,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 21:59:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:20,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-10 21:59:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:20,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-10 21:59:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 88 proven. 264 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-10 21:59:20,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:59:20,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646937731] [2024-10-10 21:59:20,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646937731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:59:20,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840209217] [2024-10-10 21:59:20,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:59:20,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:20,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:59:20,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:59:20,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 21:59:20,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-10 21:59:20,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:59:20,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-10-10 21:59:20,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:59:21,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:59:21,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2024-10-10 21:59:21,186 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:59:21,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 39 [2024-10-10 21:59:21,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:59:21,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 32 [2024-10-10 21:59:21,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:59:21,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:59:21,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 21:59:21,305 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-10-10 21:59:21,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 49 [2024-10-10 21:59:21,904 INFO L349 Elim1Store]: treesize reduction 70, result has 39.1 percent of original size [2024-10-10 21:59:21,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 75 treesize of output 80 [2024-10-10 21:59:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 190 proven. 163 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 21:59:22,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:59:23,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 84 [2024-10-10 21:59:23,268 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-10-10 21:59:23,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 671 treesize of output 1 [2024-10-10 21:59:23,372 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-10-10 21:59:23,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2024-10-10 21:59:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 208 proven. 134 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:59:23,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840209217] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:59:23,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:59:23,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 22] total 63 [2024-10-10 21:59:23,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424918622] [2024-10-10 21:59:23,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:59:23,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-10-10 21:59:23,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:59:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-10-10 21:59:23,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=3598, Unknown=1, NotChecked=0, Total=3906 [2024-10-10 21:59:23,552 INFO L87 Difference]: Start difference. First operand 722 states and 1023 transitions. Second operand has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 61 states have internal predecessors, (134), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-10 21:59:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:59:27,409 INFO L93 Difference]: Finished difference Result 3462 states and 5225 transitions. [2024-10-10 21:59:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-10-10 21:59:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 61 states have internal predecessors, (134), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 79 [2024-10-10 21:59:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:59:27,423 INFO L225 Difference]: With dead ends: 3462 [2024-10-10 21:59:27,423 INFO L226 Difference]: Without dead ends: 2323 [2024-10-10 21:59:27,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3162 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1067, Invalid=9644, Unknown=1, NotChecked=0, Total=10712 [2024-10-10 21:59:27,429 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 137 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:59:27,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 618 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2308 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2024-10-10 21:59:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2024-10-10 21:59:27,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1343. [2024-10-10 21:59:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1244 states have (on average 1.3384244372990353) internal successors, (1665), 1283 states have internal predecessors, (1665), 36 states have call successors, (36), 23 states have call predecessors, (36), 62 states have return successors, (216), 36 states have call predecessors, (216), 36 states have call successors, (216) [2024-10-10 21:59:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1917 transitions. [2024-10-10 21:59:27,621 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1917 transitions. Word has length 79 [2024-10-10 21:59:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:59:27,622 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 1917 transitions. [2024-10-10 21:59:27,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 61 states have internal predecessors, (134), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-10 21:59:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1917 transitions. [2024-10-10 21:59:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-10 21:59:27,630 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:59:27,630 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:59:27,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 21:59:27,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 21:59:27,831 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:59:27,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:59:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1509251767, now seen corresponding path program 4 times [2024-10-10 21:59:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:59:27,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103719190] [2024-10-10 21:59:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:59:27,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:59:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:28,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 21:59:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:29,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-10 21:59:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:29,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-10 21:59:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:59:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 88 proven. 262 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-10 21:59:29,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:59:29,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103719190] [2024-10-10 21:59:29,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103719190] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:59:29,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861480165] [2024-10-10 21:59:29,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:59:29,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:59:29,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:59:29,618 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:59:29,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 21:59:29,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:59:29,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:59:29,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-10 21:59:29,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:59:29,904 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-10-10 21:59:29,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 39 [2024-10-10 21:59:30,031 INFO L349 Elim1Store]: treesize reduction 100, result has 44.1 percent of original size [2024-10-10 21:59:30,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 79 treesize of output 126 [2024-10-10 21:59:31,191 INFO L349 Elim1Store]: treesize reduction 558, result has 25.4 percent of original size [2024-10-10 21:59:31,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 75 case distinctions, treesize of input 190 treesize of output 305 [2024-10-10 22:00:06,378 WARN L286 SmtUtils]: Spent 32.08s on a formula simplification. DAG size of input: 3030 DAG size of output: 413 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-10-10 22:00:06,379 INFO L349 Elim1Store]: treesize reduction 7111, result has 10.6 percent of original size [2024-10-10 22:00:06,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 40 select indices, 40 select index equivalence classes, 4 disjoint index pairs (out of 780 index pairs), introduced 40 new quantified variables, introduced 819 case distinctions, treesize of input 669 treesize of output 1162 [2024-10-10 22:00:06,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:00:06,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 25 [2024-10-10 22:00:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-10 22:00:07,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:00:07,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 176 [2024-10-10 22:00:07,972 INFO L349 Elim1Store]: treesize reduction 110, result has 0.9 percent of original size [2024-10-10 22:00:07,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 23460 treesize of output 1 [2024-10-10 22:00:08,121 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-10-10 22:00:08,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2024-10-10 22:00:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 199 proven. 123 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-10 22:00:08,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861480165] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:00:08,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:00:08,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 17] total 54 [2024-10-10 22:00:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102877228] [2024-10-10 22:00:08,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:00:08,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-10-10 22:00:08,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:00:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-10-10 22:00:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2648, Unknown=0, NotChecked=0, Total=2862 [2024-10-10 22:00:08,270 INFO L87 Difference]: Start difference. First operand 1343 states and 1917 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 52 states have internal predecessors, (117), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-10 22:00:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:00:12,347 INFO L93 Difference]: Finished difference Result 4429 states and 6444 transitions. [2024-10-10 22:00:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-10 22:00:12,348 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 52 states have internal predecessors, (117), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 79 [2024-10-10 22:00:12,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:00:12,360 INFO L225 Difference]: With dead ends: 4429 [2024-10-10 22:00:12,361 INFO L226 Difference]: Without dead ends: 3050 [2024-10-10 22:00:12,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2201 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=700, Invalid=6782, Unknown=0, NotChecked=0, Total=7482 [2024-10-10 22:00:12,367 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 87 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:00:12,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 534 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 22:00:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2024-10-10 22:00:12,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 2343. [2024-10-10 22:00:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 2160 states have (on average 1.3092592592592593) internal successors, (2828), 2229 states have internal predecessors, (2828), 66 states have call successors, (66), 47 states have call predecessors, (66), 116 states have return successors, (515), 66 states have call predecessors, (515), 66 states have call successors, (515) [2024-10-10 22:00:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3409 transitions. [2024-10-10 22:00:12,685 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3409 transitions. Word has length 79 [2024-10-10 22:00:12,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:00:12,685 INFO L471 AbstractCegarLoop]: Abstraction has 2343 states and 3409 transitions. [2024-10-10 22:00:12,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 52 states have internal predecessors, (117), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-10 22:00:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3409 transitions. [2024-10-10 22:00:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-10 22:00:12,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:00:12,696 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:00:12,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-10 22:00:12,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-10 22:00:12,898 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:00:12,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:00:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2015016077, now seen corresponding path program 5 times [2024-10-10 22:00:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:00:12,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823258218] [2024-10-10 22:00:12,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:00:12,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:00:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:00:14,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 22:00:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:00:14,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-10 22:00:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:00:15,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-10 22:00:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:00:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 178 proven. 164 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 22:00:15,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:00:15,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823258218] [2024-10-10 22:00:15,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823258218] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:00:15,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078062754] [2024-10-10 22:00:15,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:00:15,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:00:15,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:00:15,292 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:00:15,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-10 22:00:15,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-10-10 22:00:15,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:00:15,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-10 22:00:15,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:00:15,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-10 22:00:15,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:00:15,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2024-10-10 22:00:15,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2024-10-10 22:00:15,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:00:15,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:00:15,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:00:15,712 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-10-10 22:00:15,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 49 [2024-10-10 22:00:15,874 INFO L349 Elim1Store]: treesize reduction 154, result has 31.9 percent of original size [2024-10-10 22:00:15,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 90 treesize of output 122 [2024-10-10 22:00:16,329 INFO L349 Elim1Store]: treesize reduction 341, result has 25.1 percent of original size [2024-10-10 22:00:16,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 127 treesize of output 179 [2024-10-10 22:00:16,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:00:16,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 25 [2024-10-10 22:00:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 4 proven. 291 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-10 22:00:16,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:00:17,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078062754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:00:17,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:00:17,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18] total 36 [2024-10-10 22:00:17,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714984501] [2024-10-10 22:00:17,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-10 22:00:17,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-10 22:00:17,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:00:17,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-10 22:00:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1778, Unknown=0, NotChecked=0, Total=1980 [2024-10-10 22:00:17,774 INFO L87 Difference]: Start difference. First operand 2343 states and 3409 transitions. Second operand has 36 states, 36 states have (on average 2.2777777777777777) internal successors, (82), 35 states have internal predecessors, (82), 3 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-10 22:00:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:00:20,576 INFO L93 Difference]: Finished difference Result 5297 states and 7300 transitions. [2024-10-10 22:00:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-10 22:00:20,577 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.2777777777777777) internal successors, (82), 35 states have internal predecessors, (82), 3 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 79 [2024-10-10 22:00:20,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:00:20,592 INFO L225 Difference]: With dead ends: 5297 [2024-10-10 22:00:20,593 INFO L226 Difference]: Without dead ends: 4332 [2024-10-10 22:00:20,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2031 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=644, Invalid=6162, Unknown=0, NotChecked=0, Total=6806 [2024-10-10 22:00:20,597 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 108 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:00:20,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 253 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:00:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2024-10-10 22:00:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3029. [2024-10-10 22:00:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3029 states, 2778 states have (on average 1.2912167026637869) internal successors, (3587), 2884 states have internal predecessors, (3587), 81 states have call successors, (81), 63 states have call predecessors, (81), 169 states have return successors, (479), 81 states have call predecessors, (479), 81 states have call successors, (479) [2024-10-10 22:00:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 4147 transitions. [2024-10-10 22:00:21,144 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 4147 transitions. Word has length 79 [2024-10-10 22:00:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:00:21,145 INFO L471 AbstractCegarLoop]: Abstraction has 3029 states and 4147 transitions. [2024-10-10 22:00:21,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.2777777777777777) internal successors, (82), 35 states have internal predecessors, (82), 3 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-10 22:00:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 4147 transitions. [2024-10-10 22:00:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-10 22:00:21,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:00:21,153 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:00:21,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-10 22:00:21,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-10 22:00:21,357 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:00:21,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:00:21,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1156692877, now seen corresponding path program 6 times [2024-10-10 22:00:21,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:00:21,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181720500] [2024-10-10 22:00:21,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:00:21,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:00:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:00:22,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-10 22:00:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:00:22,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-10 22:00:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:00:22,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-10 22:00:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:00:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 88 proven. 262 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-10 22:00:22,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:00:22,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181720500] [2024-10-10 22:00:22,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181720500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:00:22,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828405003] [2024-10-10 22:00:22,774 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:00:22,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:00:22,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:00:22,776 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:00:22,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-10 22:00:23,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-10 22:00:23,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:00:23,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-10 22:00:23,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:00:23,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-10 22:00:23,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:00:23,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2024-10-10 22:00:23,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:00:23,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 33 [2024-10-10 22:00:23,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:00:23,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 43 [2024-10-10 22:00:23,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:00:23,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 43 [2024-10-10 22:00:23,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:00:23,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 36 [2024-10-10 22:00:23,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:00:23,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 22