./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_m5.c --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/array-crafted/zero_sum_m5.c -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 afdb8b285c2183da613babde617c7580c3aee6b3bc694b080468400e828cda16 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:09:51,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:09:51,721 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:09:51,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:09:51,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:09:51,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:09:51,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:09:51,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:09:51,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:09:51,760 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:09:51,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:09:51,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:09:51,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:09:51,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:09:51,763 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:09:51,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:09:51,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:09:51,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:09:51,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:09:51,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:09:51,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:09:51,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:09:51,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:09:51,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:09:51,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:09:51,771 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:09:51,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:09:51,772 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:09:51,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:09:51,775 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:09:51,775 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:09:51,776 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:09:51,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:09:51,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:09:51,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:09:51,777 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:09:51,777 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:09:51,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:09:51,777 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:09:51,777 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:09:51,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:09:51,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:09:51,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afdb8b285c2183da613babde617c7580c3aee6b3bc694b080468400e828cda16 [2024-10-10 22:09:52,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:09:52,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:09:52,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:09:52,071 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:09:52,072 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:09:52,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_m5.c [2024-10-10 22:09:53,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:09:53,707 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:09:53,708 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_m5.c [2024-10-10 22:09:53,715 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/397c4124d/1b998745c268410e904644b89274a8c3/FLAGe3ea9b9c6 [2024-10-10 22:09:53,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/397c4124d/1b998745c268410e904644b89274a8c3 [2024-10-10 22:09:53,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:09:53,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:09:53,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:09:53,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:09:53,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:09:53,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:53,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4c63cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53, skipping insertion in model container [2024-10-10 22:09:53,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:53,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:09:53,918 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/array-crafted/zero_sum_m5.c[402,415] [2024-10-10 22:09:53,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:09:53,950 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:09:53,962 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/array-crafted/zero_sum_m5.c[402,415] [2024-10-10 22:09:53,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:09:53,992 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:09:53,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53 WrapperNode [2024-10-10 22:09:53,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:09:53,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:09:53,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:09:53,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:09:54,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,027 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 152 [2024-10-10 22:09:54,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:09:54,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:09:54,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:09:54,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:09:54,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,059 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-10 22:09:54,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:09:54,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:09:54,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:09:54,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:09:54,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (1/1) ... [2024-10-10 22:09:54,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:09:54,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:09:54,109 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 22:09:54,111 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 22:09:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:09:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:09:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:09:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:09:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:09:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:09:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:09:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:09:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:09:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:09:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:09:54,210 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:09:54,212 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:09:54,413 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-10-10 22:09:54,413 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:09:54,468 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:09:54,468 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-10 22:09:54,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:09:54 BoogieIcfgContainer [2024-10-10 22:09:54,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:09:54,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:09:54,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:09:54,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:09:54,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:09:53" (1/3) ... [2024-10-10 22:09:54,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a18424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:09:54, skipping insertion in model container [2024-10-10 22:09:54,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:09:53" (2/3) ... [2024-10-10 22:09:54,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a18424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:09:54, skipping insertion in model container [2024-10-10 22:09:54,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:09:54" (3/3) ... [2024-10-10 22:09:54,483 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_m5.c [2024-10-10 22:09:54,500 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:09:54,502 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:09:54,573 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:09:54,581 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;@432e3c42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:09:54,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:09:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-10 22:09:54,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:09:54,594 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:09:54,594 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:09:54,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:09:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1439288402, now seen corresponding path program 1 times [2024-10-10 22:09:54,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:09:54,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446808075] [2024-10-10 22:09:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:09:54,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:09:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:09:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:09:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:09:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446808075] [2024-10-10 22:09:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446808075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:09:54,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:09:54,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:09:54,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440723378] [2024-10-10 22:09:54,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:09:54,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:09:54,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:09:54,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:09:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:09:54,863 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:09:54,915 INFO L93 Difference]: Finished difference Result 57 states and 100 transitions. [2024-10-10 22:09:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:09:54,917 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-10 22:09:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:09:54,925 INFO L225 Difference]: With dead ends: 57 [2024-10-10 22:09:54,925 INFO L226 Difference]: Without dead ends: 27 [2024-10-10 22:09:54,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:09:54,931 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 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 22:09:54,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:09:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-10 22:09:54,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-10 22:09:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2024-10-10 22:09:54,960 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 26 [2024-10-10 22:09:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:09:54,960 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2024-10-10 22:09:54,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-10-10 22:09:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-10 22:09:54,962 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:09:54,962 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:09:54,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:09:54,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:09:54,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:09:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1795376710, now seen corresponding path program 1 times [2024-10-10 22:09:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:09:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281180971] [2024-10-10 22:09:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:09:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:09:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:09:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:09:55,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:09:55,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281180971] [2024-10-10 22:09:55,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281180971] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:09:55,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:09:55,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:09:55,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027487259] [2024-10-10 22:09:55,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:09:55,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:09:55,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:09:55,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:09:55,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:09:55,141 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:09:55,211 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2024-10-10 22:09:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:09:55,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-10 22:09:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:09:55,214 INFO L225 Difference]: With dead ends: 52 [2024-10-10 22:09:55,215 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:09:55,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 22:09:55,217 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:09:55,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:09:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:09:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-10-10 22:09:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2024-10-10 22:09:55,227 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 26 [2024-10-10 22:09:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:09:55,227 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2024-10-10 22:09:55,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2024-10-10 22:09:55,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-10 22:09:55,228 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:09:55,229 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:09:55,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:09:55,229 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:09:55,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:09:55,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1649880805, now seen corresponding path program 1 times [2024-10-10 22:09:55,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:09:55,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124983666] [2024-10-10 22:09:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:09:55,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:09:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:09:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:09:55,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:09:55,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124983666] [2024-10-10 22:09:55,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124983666] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:09:55,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:09:55,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 22:09:55,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105393979] [2024-10-10 22:09:55,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:09:55,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:09:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:09:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:09:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:09:55,393 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:09:55,510 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2024-10-10 22:09:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:09:55,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-10 22:09:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:09:55,512 INFO L225 Difference]: With dead ends: 60 [2024-10-10 22:09:55,512 INFO L226 Difference]: Without dead ends: 38 [2024-10-10 22:09:55,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:09:55,514 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 42 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:09:55,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 17 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:09:55,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-10 22:09:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-10-10 22:09:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-10-10 22:09:55,524 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 27 [2024-10-10 22:09:55,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:09:55,524 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-10-10 22:09:55,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-10-10 22:09:55,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-10 22:09:55,527 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:09:55,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:09:55,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:09:55,528 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:09:55,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:09:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash -903484266, now seen corresponding path program 1 times [2024-10-10 22:09:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:09:55,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500589765] [2024-10-10 22:09:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:09:55,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:09:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:09:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 22:09:55,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:09:55,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500589765] [2024-10-10 22:09:55,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500589765] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:09:55,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465244614] [2024-10-10 22:09:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:09:55,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:09:55,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:09:55,718 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 22:09:55,720 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 22:09:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:09:55,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:09:55,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:09:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 22:09:55,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:09:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 22:09:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465244614] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:09:55,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:09:55,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-10 22:09:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959858975] [2024-10-10 22:09:55,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:09:55,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:09:55,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:09:55,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:09:55,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:09:55,935 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:09:56,013 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-10-10 22:09:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:09:56,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-10 22:09:56,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:09:56,015 INFO L225 Difference]: With dead ends: 73 [2024-10-10 22:09:56,015 INFO L226 Difference]: Without dead ends: 39 [2024-10-10 22:09:56,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:09:56,018 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:09:56,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:09:56,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-10 22:09:56,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-10 22:09:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-10-10 22:09:56,028 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 37 [2024-10-10 22:09:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:09:56,029 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-10-10 22:09:56,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-10-10 22:09:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-10 22:09:56,031 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:09:56,031 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:09:56,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 22:09:56,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:09:56,236 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:09:56,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:09:56,237 INFO L85 PathProgramCache]: Analyzing trace with hash -702104937, now seen corresponding path program 2 times [2024-10-10 22:09:56,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:09:56,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898756072] [2024-10-10 22:09:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:09:56,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:09:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:09:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:09:56,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:09:56,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898756072] [2024-10-10 22:09:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898756072] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:09:56,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002364889] [2024-10-10 22:09:56,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:09:56,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:09:56,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:09:56,385 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 22:09:56,387 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 22:09:56,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:09:56,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:09:56,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:09:56,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:09:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:09:56,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:09:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:09:56,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002364889] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:09:56,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:09:56,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-10-10 22:09:56,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129181812] [2024-10-10 22:09:56,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:09:56,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-10 22:09:56,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:09:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-10 22:09:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:09:56,660 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:09:56,786 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2024-10-10 22:09:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:09:56,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-10 22:09:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:09:56,788 INFO L225 Difference]: With dead ends: 80 [2024-10-10 22:09:56,788 INFO L226 Difference]: Without dead ends: 49 [2024-10-10 22:09:56,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:09:56,789 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:09:56,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:09:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-10 22:09:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-10 22:09:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-10-10 22:09:56,804 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 38 [2024-10-10 22:09:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:09:56,804 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-10-10 22:09:56,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:09:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-10-10 22:09:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-10 22:09:56,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:09:56,807 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:09:56,825 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 22:09:57,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:09:57,009 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:09:57,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:09:57,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1904690106, now seen corresponding path program 3 times [2024-10-10 22:09:57,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:09:57,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449471781] [2024-10-10 22:09:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:09:57,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:09:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:10:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:10:01,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:10:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449471781] [2024-10-10 22:10:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449471781] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:10:01,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905188105] [2024-10-10 22:10:01,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:10:01,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:01,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:10:01,051 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 22:10:01,052 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 22:10:01,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:10:01,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:10:01,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-10-10 22:10:01,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:10:01,172 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 22:10:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:10:01,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:10:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-10 22:10:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905188105] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:10:02,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:10:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 29] total 54 [2024-10-10 22:10:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518094573] [2024-10-10 22:10:02,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:10:02,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-10-10 22:10:02,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:10:02,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-10-10 22:10:02,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2714, Unknown=0, NotChecked=0, Total=2862 [2024-10-10 22:10:02,979 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 54 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 54 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:10:03,982 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2024-10-10 22:10:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-10 22:10:03,983 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 54 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-10-10 22:10:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:10:03,984 INFO L225 Difference]: With dead ends: 90 [2024-10-10 22:10:03,984 INFO L226 Difference]: Without dead ends: 86 [2024-10-10 22:10:03,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=148, Invalid=2714, Unknown=0, NotChecked=0, Total=2862 [2024-10-10 22:10:03,986 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:10:03,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 297 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:10:03,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-10 22:10:03,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-10-10 22:10:03,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 83 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2024-10-10 22:10:04,000 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 48 [2024-10-10 22:10:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:10:04,000 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2024-10-10 22:10:04,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 54 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2024-10-10 22:10:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-10 22:10:04,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:10:04,002 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:10:04,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:10:04,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:04,203 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:10:04,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:10:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1358968049, now seen corresponding path program 4 times [2024-10-10 22:10:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:10:04,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472036485] [2024-10-10 22:10:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:10:04,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:10:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:10:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-10 22:10:04,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:10:04,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472036485] [2024-10-10 22:10:04,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472036485] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:10:04,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374499910] [2024-10-10 22:10:04,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:10:04,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:04,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:10:04,345 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 22:10:04,346 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 22:10:04,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:10:04,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:10:04,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:10:04,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:10:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-10 22:10:04,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:10:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-10 22:10:04,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374499910] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:10:04,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:10:04,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-10-10 22:10:04,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120060007] [2024-10-10 22:10:04,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:10:04,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 22:10:04,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:10:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 22:10:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:10:04,584 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:05,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:10:05,192 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2024-10-10 22:10:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-10 22:10:05,193 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-10-10 22:10:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:10:05,194 INFO L225 Difference]: With dead ends: 177 [2024-10-10 22:10:05,194 INFO L226 Difference]: Without dead ends: 96 [2024-10-10 22:10:05,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-10-10 22:10:05,198 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:10:05,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 97 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:10:05,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-10 22:10:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2024-10-10 22:10:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 88 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2024-10-10 22:10:05,224 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 49 [2024-10-10 22:10:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:10:05,225 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2024-10-10 22:10:05,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2024-10-10 22:10:05,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-10 22:10:05,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:10:05,227 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:10:05,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:10:05,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-10 22:10:05,429 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:10:05,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:10:05,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1405545912, now seen corresponding path program 5 times [2024-10-10 22:10:05,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:10:05,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684838361] [2024-10-10 22:10:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:10:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:10:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:10:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-10 22:10:05,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:10:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684838361] [2024-10-10 22:10:05,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684838361] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:10:05,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034058298] [2024-10-10 22:10:05,568 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:10:05,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:05,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:10:05,570 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 22:10:05,571 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 22:10:05,668 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-10 22:10:05,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:10:05,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:10:05,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:10:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-10 22:10:05,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:10:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-10 22:10:05,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034058298] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:10:05,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:10:05,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-10-10 22:10:05,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823138039] [2024-10-10 22:10:05,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:10:05,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 22:10:05,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:10:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 22:10:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:10:05,955 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:10:06,171 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2024-10-10 22:10:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 22:10:06,171 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-10 22:10:06,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:10:06,172 INFO L225 Difference]: With dead ends: 134 [2024-10-10 22:10:06,172 INFO L226 Difference]: Without dead ends: 60 [2024-10-10 22:10:06,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-10-10 22:10:06,175 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:10:06,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 66 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:10:06,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-10 22:10:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-10 22:10:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-10-10 22:10:06,189 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 50 [2024-10-10 22:10:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:10:06,190 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-10-10 22:10:06,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-10-10 22:10:06,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-10 22:10:06,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:10:06,194 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:10:06,211 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 22:10:06,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:06,396 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:10:06,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:10:06,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1880623638, now seen corresponding path program 6 times [2024-10-10 22:10:06,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:10:06,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369418695] [2024-10-10 22:10:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:10:06,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:10:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:10:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:10:11,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:10:11,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369418695] [2024-10-10 22:10:11,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369418695] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:10:11,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113063370] [2024-10-10 22:10:11,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:10:11,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:11,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:10:11,570 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 22:10:11,572 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 22:10:11,667 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-10 22:10:11,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:10:11,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-10-10 22:10:11,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:10:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:10:13,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:10:16,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:10:16,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 89 [2024-10-10 22:10:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:10:16,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113063370] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:10:16,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:10:16,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 36, 39] total 108 [2024-10-10 22:10:16,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025902205] [2024-10-10 22:10:16,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:10:16,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-10-10 22:10:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:10:16,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-10-10 22:10:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=11204, Unknown=0, NotChecked=0, Total=11556 [2024-10-10 22:10:16,344 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 108 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 108 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:10:24,853 INFO L93 Difference]: Finished difference Result 243 states and 294 transitions. [2024-10-10 22:10:24,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-10-10 22:10:24,853 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 108 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-10-10 22:10:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:10:24,855 INFO L225 Difference]: With dead ends: 243 [2024-10-10 22:10:24,856 INFO L226 Difference]: Without dead ends: 238 [2024-10-10 22:10:24,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5094 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1052, Invalid=22204, Unknown=0, NotChecked=0, Total=23256 [2024-10-10 22:10:24,864 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 157 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 9290 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 9933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 9290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:10:24,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 562 Invalid, 9933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 9290 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-10-10 22:10:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-10 22:10:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 141. [2024-10-10 22:10:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2142857142857142) internal successors, (170), 140 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 170 transitions. [2024-10-10 22:10:24,912 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 170 transitions. Word has length 59 [2024-10-10 22:10:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:10:24,913 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 170 transitions. [2024-10-10 22:10:24,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 108 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 170 transitions. [2024-10-10 22:10:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 22:10:24,914 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:10:24,914 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:10:24,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 22:10:25,115 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,SelfDestructingSolverStorable8 [2024-10-10 22:10:25,116 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:10:25,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:10:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1993316346, now seen corresponding path program 7 times [2024-10-10 22:10:25,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:10:25,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94915862] [2024-10-10 22:10:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:10:25,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:10:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:10:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-10 22:10:25,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:10:25,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94915862] [2024-10-10 22:10:25,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94915862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:10:25,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030794914] [2024-10-10 22:10:25,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 22:10:25,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:25,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:10:25,311 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 22:10:25,312 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 22:10:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:10:25,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-10 22:10:25,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:10:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-10 22:10:25,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:10:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-10 22:10:25,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030794914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:10:25,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:10:25,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-10 22:10:25,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722731981] [2024-10-10 22:10:25,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:10:25,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-10 22:10:25,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:10:25,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-10 22:10:25,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:10:25,597 INFO L87 Difference]: Start difference. First operand 141 states and 170 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:10:25,790 INFO L93 Difference]: Finished difference Result 233 states and 278 transitions. [2024-10-10 22:10:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-10 22:10:25,790 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-10 22:10:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:10:25,791 INFO L225 Difference]: With dead ends: 233 [2024-10-10 22:10:25,791 INFO L226 Difference]: Without dead ends: 105 [2024-10-10 22:10:25,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 107 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:10:25,792 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:10:25,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 44 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:10:25,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-10 22:10:25,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-10-10 22:10:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 104 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2024-10-10 22:10:25,819 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 60 [2024-10-10 22:10:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:10:25,819 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2024-10-10 22:10:25,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2024-10-10 22:10:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-10 22:10:25,820 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:10:25,821 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:10:25,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-10 22:10:26,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:26,025 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:10:26,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:10:26,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1761530592, now seen corresponding path program 8 times [2024-10-10 22:10:26,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:10:26,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292637405] [2024-10-10 22:10:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:10:26,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:10:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:10:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-10 22:10:26,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:10:26,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292637405] [2024-10-10 22:10:26,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292637405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:10:26,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117338581] [2024-10-10 22:10:26,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:10:26,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:26,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:10:26,168 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 22:10:26,169 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 22:10:26,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:10:26,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:10:26,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-10 22:10:26,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:10:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-10 22:10:26,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:10:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-10 22:10:26,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117338581] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:10:26,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:10:26,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-10 22:10:26,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676152034] [2024-10-10 22:10:26,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:10:26,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-10 22:10:26,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:10:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-10 22:10:26,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:10:26,422 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:10:26,580 INFO L93 Difference]: Finished difference Result 159 states and 196 transitions. [2024-10-10 22:10:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 22:10:26,580 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-10 22:10:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:10:26,581 INFO L225 Difference]: With dead ends: 159 [2024-10-10 22:10:26,581 INFO L226 Difference]: Without dead ends: 71 [2024-10-10 22:10:26,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:10:26,582 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:10:26,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 83 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:10:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-10 22:10:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-10 22:10:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2024-10-10 22:10:26,600 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 61 [2024-10-10 22:10:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:10:26,600 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2024-10-10 22:10:26,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:10:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2024-10-10 22:10:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-10 22:10:26,601 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:10:26,601 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:10:26,614 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 22:10:26,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 22:10:26,801 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:10:26,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:10:26,802 INFO L85 PathProgramCache]: Analyzing trace with hash 466932294, now seen corresponding path program 9 times [2024-10-10 22:10:26,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:10:26,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715435523] [2024-10-10 22:10:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:10:26,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:10:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:10:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 1 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:10:34,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:10:34,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715435523] [2024-10-10 22:10:34,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715435523] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:10:34,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472478150] [2024-10-10 22:10:34,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:10:34,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:10:34,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:10:34,277 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 22:10:34,278 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 22:10:34,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 22:10:34,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:10:34,368 WARN L253 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-10-10 22:10:34,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:10:34,448 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 22:10:40,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:10:40,562 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 15 treesize of output 14 [2024-10-10 22:10:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:10:40,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:11:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 3 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:11:02,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472478150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:11:02,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:11:02,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 69, 69] total 187 [2024-10-10 22:11:02,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407676664] [2024-10-10 22:11:02,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:11:02,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 187 states [2024-10-10 22:11:02,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2024-10-10 22:11:02,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1632, Invalid=33146, Unknown=4, NotChecked=0, Total=34782 [2024-10-10 22:11:02,575 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 187 states, 187 states have (on average 1.0748663101604279) internal successors, (201), 187 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)