./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/eca-rers2012/Problem13_label24.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '5b1376b91fc4972ce6c7d65475312883937dd65d9e0386ea92accc3cc98d9312'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label24.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 5b1376b91fc4972ce6c7d65475312883937dd65d9e0386ea92accc3cc98d9312 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 19:48:15,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 19:48:15,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 19:48:15,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 19:48:15,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 19:48:15,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 19:48:15,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 19:48:15,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 19:48:15,922 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 19:48:15,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 19:48:15,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 19:48:15,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 19:48:15,923 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 19:48:15,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 19:48:15,924 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 19:48:15,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 19:48:15,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 19:48:15,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 19:48:15,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 19:48:15,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:48:15,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 19:48:15,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 19:48:15,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 19:48:15,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 19:48:15,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 19:48:15,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 19:48:15,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 19:48:15,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 19:48:15,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 19:48:15,928 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 5b1376b91fc4972ce6c7d65475312883937dd65d9e0386ea92accc3cc98d9312 [2024-11-06 19:48:16,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 19:48:16,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 19:48:16,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 19:48:16,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 19:48:16,139 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 19:48:16,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label24.c [2024-11-06 19:48:17,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 19:48:17,756 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 19:48:17,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label24.c [2024-11-06 19:48:17,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/90069fcdc/e5992f8de7fb46c4808c47b489585674/FLAG2259aecb6 [2024-11-06 19:48:17,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/90069fcdc/e5992f8de7fb46c4808c47b489585674 [2024-11-06 19:48:17,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 19:48:17,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 19:48:17,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 19:48:17,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 19:48:17,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 19:48:17,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:48:17" (1/1) ... [2024-11-06 19:48:17,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791b21dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:17, skipping insertion in model container [2024-11-06 19:48:17,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:48:17" (1/1) ... [2024-11-06 19:48:17,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 19:48:18,110 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label24.c[4341,4354] [2024-11-06 19:48:18,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:48:18,601 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 19:48:18,620 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label24.c[4341,4354] [2024-11-06 19:48:18,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:48:18,893 INFO L204 MainTranslator]: Completed translation [2024-11-06 19:48:18,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18 WrapperNode [2024-11-06 19:48:18,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 19:48:18,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 19:48:18,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 19:48:18,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 19:48:18,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:18,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:19,390 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-06 19:48:19,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 19:48:19,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 19:48:19,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 19:48:19,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 19:48:19,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:19,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:19,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:19,781 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 19:48:19,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:19,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:19,923 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:19,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:19,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:19,980 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:20,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 19:48:20,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 19:48:20,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 19:48:20,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 19:48:20,022 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (1/1) ... [2024-11-06 19:48:20,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:48:20,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:48:20,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 19:48:20,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 19:48:20,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 19:48:20,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 19:48:20,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 19:48:20,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 19:48:20,123 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 19:48:20,124 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 19:48:24,383 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-06 19:48:24,384 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 19:48:24,413 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 19:48:24,413 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 19:48:24,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:48:24 BoogieIcfgContainer [2024-11-06 19:48:24,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 19:48:24,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 19:48:24,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 19:48:24,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 19:48:24,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:48:17" (1/3) ... [2024-11-06 19:48:24,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45574194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:48:24, skipping insertion in model container [2024-11-06 19:48:24,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:18" (2/3) ... [2024-11-06 19:48:24,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45574194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:48:24, skipping insertion in model container [2024-11-06 19:48:24,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:48:24" (3/3) ... [2024-11-06 19:48:24,425 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label24.c [2024-11-06 19:48:24,435 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 19:48:24,435 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 19:48:24,492 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 19:48:24,499 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;@4d41aeb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 19:48:24,500 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 19:48:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2024-11-06 19:48:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 19:48:24,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:24,509 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] [2024-11-06 19:48:24,510 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:24,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash -748286455, now seen corresponding path program 1 times [2024-11-06 19:48:24,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:24,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422071594] [2024-11-06 19:48:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:24,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:24,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422071594] [2024-11-06 19:48:24,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422071594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:24,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:24,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:24,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231886720] [2024-11-06 19:48:24,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:24,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:24,741 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-11-06 19:48:28,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:28,332 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2024-11-06 19:48:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:28,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2024-11-06 19:48:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:28,351 INFO L225 Difference]: With dead ends: 3082 [2024-11-06 19:48:28,351 INFO L226 Difference]: Without dead ends: 1899 [2024-11-06 19:48:28,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:28,359 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 1010 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:28,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-06 19:48:28,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-06 19:48:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2024-11-06 19:48:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 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) [2024-11-06 19:48:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2024-11-06 19:48:28,474 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 29 [2024-11-06 19:48:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:28,475 INFO L471 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2024-11-06 19:48:28,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-11-06 19:48:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2024-11-06 19:48:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-06 19:48:28,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:28,480 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:28,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 19:48:28,481 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:28,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:28,481 INFO L85 PathProgramCache]: Analyzing trace with hash 741472386, now seen corresponding path program 1 times [2024-11-06 19:48:28,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:28,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786202466] [2024-11-06 19:48:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:28,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:28,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786202466] [2024-11-06 19:48:28,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786202466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:28,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:28,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371381151] [2024-11-06 19:48:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:28,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:28,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:28,708 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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) [2024-11-06 19:48:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:32,137 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2024-11-06 19:48:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 94 [2024-11-06 19:48:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:32,163 INFO L225 Difference]: With dead ends: 5384 [2024-11-06 19:48:32,163 INFO L226 Difference]: Without dead ends: 3492 [2024-11-06 19:48:32,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:32,166 INFO L432 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:32,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-06 19:48:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2024-11-06 19:48:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2024-11-06 19:48:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 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) [2024-11-06 19:48:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2024-11-06 19:48:32,256 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 94 [2024-11-06 19:48:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:32,257 INFO L471 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2024-11-06 19:48:32,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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) [2024-11-06 19:48:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2024-11-06 19:48:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-06 19:48:32,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:32,260 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:32,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 19:48:32,260 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:32,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1046705063, now seen corresponding path program 1 times [2024-11-06 19:48:32,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:32,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333710117] [2024-11-06 19:48:32,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:32,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:32,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:32,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333710117] [2024-11-06 19:48:32,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333710117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:32,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:32,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:32,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051124061] [2024-11-06 19:48:32,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:32,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:32,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:32,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:32,391 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2024-11-06 19:48:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:35,335 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2024-11-06 19:48:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:35,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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 96 [2024-11-06 19:48:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:35,355 INFO L225 Difference]: With dead ends: 10169 [2024-11-06 19:48:35,355 INFO L226 Difference]: Without dead ends: 6680 [2024-11-06 19:48:35,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:35,361 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:35,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-06 19:48:35,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2024-11-06 19:48:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2024-11-06 19:48:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 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) [2024-11-06 19:48:35,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2024-11-06 19:48:35,458 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 96 [2024-11-06 19:48:35,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:35,460 INFO L471 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2024-11-06 19:48:35,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2024-11-06 19:48:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2024-11-06 19:48:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-06 19:48:35,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:35,461 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:35,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 19:48:35,461 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:35,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:35,462 INFO L85 PathProgramCache]: Analyzing trace with hash 248170165, now seen corresponding path program 1 times [2024-11-06 19:48:35,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:35,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19101670] [2024-11-06 19:48:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:35,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:35,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:35,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19101670] [2024-11-06 19:48:35,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19101670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:35,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:35,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:35,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128305432] [2024-11-06 19:48:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:35,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:35,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:35,845 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2024-11-06 19:48:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:38,428 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2024-11-06 19:48:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:38,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 140 [2024-11-06 19:48:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:38,446 INFO L225 Difference]: With dead ends: 14123 [2024-11-06 19:48:38,447 INFO L226 Difference]: Without dead ends: 7456 [2024-11-06 19:48:38,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:38,466 INFO L432 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:38,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 19:48:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2024-11-06 19:48:38,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2024-11-06 19:48:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 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) [2024-11-06 19:48:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2024-11-06 19:48:38,596 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 140 [2024-11-06 19:48:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:38,597 INFO L471 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2024-11-06 19:48:38,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2024-11-06 19:48:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2024-11-06 19:48:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-06 19:48:38,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:38,600 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:38,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 19:48:38,600 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:38,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:38,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1870627551, now seen corresponding path program 1 times [2024-11-06 19:48:38,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:38,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897546913] [2024-11-06 19:48:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:38,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-06 19:48:38,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:38,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897546913] [2024-11-06 19:48:38,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897546913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:38,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:38,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:38,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7730837] [2024-11-06 19:48:38,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:38,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:38,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:38,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:38,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:38,785 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2024-11-06 19:48:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:41,694 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2024-11-06 19:48:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 154 [2024-11-06 19:48:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:41,722 INFO L225 Difference]: With dead ends: 19656 [2024-11-06 19:48:41,722 INFO L226 Difference]: Without dead ends: 12989 [2024-11-06 19:48:41,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:41,727 INFO L432 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:41,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-06 19:48:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2024-11-06 19:48:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2024-11-06 19:48:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 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) [2024-11-06 19:48:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2024-11-06 19:48:41,857 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 154 [2024-11-06 19:48:41,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:41,858 INFO L471 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2024-11-06 19:48:41,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2024-11-06 19:48:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2024-11-06 19:48:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-06 19:48:41,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:41,860 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:48:41,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 19:48:41,860 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:41,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash -538681918, now seen corresponding path program 1 times [2024-11-06 19:48:41,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:41,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042092668] [2024-11-06 19:48:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:41,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-06 19:48:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:42,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042092668] [2024-11-06 19:48:42,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042092668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:42,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:42,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944224115] [2024-11-06 19:48:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:42,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:42,116 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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) [2024-11-06 19:48:44,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:44,810 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2024-11-06 19:48:44,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:44,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 241 [2024-11-06 19:48:44,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:44,835 INFO L225 Difference]: With dead ends: 22792 [2024-11-06 19:48:44,835 INFO L226 Difference]: Without dead ends: 12980 [2024-11-06 19:48:44,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:44,846 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:44,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:48:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2024-11-06 19:48:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2024-11-06 19:48:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 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) [2024-11-06 19:48:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2024-11-06 19:48:45,064 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 241 [2024-11-06 19:48:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:45,066 INFO L471 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2024-11-06 19:48:45,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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) [2024-11-06 19:48:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2024-11-06 19:48:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-06 19:48:45,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:45,069 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:45,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 19:48:45,070 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:45,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:45,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2012805208, now seen corresponding path program 1 times [2024-11-06 19:48:45,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:45,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304287759] [2024-11-06 19:48:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:45,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:45,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:45,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304287759] [2024-11-06 19:48:45,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304287759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:45,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:45,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:48:45,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219767255] [2024-11-06 19:48:45,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:45,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:45,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:45,176 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2024-11-06 19:48:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:48,626 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2024-11-06 19:48:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:48,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 243 [2024-11-06 19:48:48,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:48,651 INFO L225 Difference]: With dead ends: 36166 [2024-11-06 19:48:48,652 INFO L226 Difference]: Without dead ends: 23196 [2024-11-06 19:48:48,662 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 [2024-11-06 19:48:48,662 INFO L432 NwaCegarLoop]: 1851 mSDtfsCounter, 841 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:48,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1989 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-06 19:48:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2024-11-06 19:48:48,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 22404. [2024-11-06 19:48:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1931884122662144) internal successors, (26731), 22403 states have internal predecessors, (26731), 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) [2024-11-06 19:48:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26731 transitions. [2024-11-06 19:48:48,995 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26731 transitions. Word has length 243 [2024-11-06 19:48:48,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:48,996 INFO L471 AbstractCegarLoop]: Abstraction has 22404 states and 26731 transitions. [2024-11-06 19:48:48,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2024-11-06 19:48:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26731 transitions. [2024-11-06 19:48:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-06 19:48:48,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:48,999 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:48,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 19:48:48,999 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:49,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:49,005 INFO L85 PathProgramCache]: Analyzing trace with hash -4245416, now seen corresponding path program 1 times [2024-11-06 19:48:49,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:49,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875809738] [2024-11-06 19:48:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:49,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-06 19:48:49,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:49,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875809738] [2024-11-06 19:48:49,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875809738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:49,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:49,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:48:49,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334198787] [2024-11-06 19:48:49,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:49,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:49,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:49,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:49,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:49,266 INFO L87 Difference]: Start difference. First operand 22404 states and 26731 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2024-11-06 19:48:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:52,211 INFO L93 Difference]: Finished difference Result 55046 states and 66948 transitions. [2024-11-06 19:48:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 265 [2024-11-06 19:48:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:52,237 INFO L225 Difference]: With dead ends: 55046 [2024-11-06 19:48:52,237 INFO L226 Difference]: Without dead ends: 33431 [2024-11-06 19:48:52,248 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 [2024-11-06 19:48:52,249 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 884 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:52,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 926 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-06 19:48:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33431 states. [2024-11-06 19:48:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33431 to 32635. [2024-11-06 19:48:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32635 states, 32634 states have (on average 1.1762578905436047) internal successors, (38386), 32634 states have internal predecessors, (38386), 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) [2024-11-06 19:48:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32635 states to 32635 states and 38386 transitions. [2024-11-06 19:48:52,584 INFO L78 Accepts]: Start accepts. Automaton has 32635 states and 38386 transitions. Word has length 265 [2024-11-06 19:48:52,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:52,585 INFO L471 AbstractCegarLoop]: Abstraction has 32635 states and 38386 transitions. [2024-11-06 19:48:52,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2024-11-06 19:48:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 32635 states and 38386 transitions. [2024-11-06 19:48:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-06 19:48:52,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:52,589 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:52,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 19:48:52,589 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:52,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:52,590 INFO L85 PathProgramCache]: Analyzing trace with hash -596585222, now seen corresponding path program 1 times [2024-11-06 19:48:52,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:52,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867526938] [2024-11-06 19:48:52,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:52,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 53 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:53,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:53,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867526938] [2024-11-06 19:48:53,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867526938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:48:53,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847637329] [2024-11-06 19:48:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:53,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:48:53,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:48:53,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:48:53,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 19:48:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:54,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:48:54,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:48:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-06 19:48:54,071 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:48:54,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847637329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:54,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:48:54,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-06 19:48:54,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113382161] [2024-11-06 19:48:54,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:54,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:54,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:48:54,073 INFO L87 Difference]: Start difference. First operand 32635 states and 38386 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-11-06 19:48:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:56,843 INFO L93 Difference]: Finished difference Result 64479 states and 75977 transitions. [2024-11-06 19:48:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 270 [2024-11-06 19:48:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:56,876 INFO L225 Difference]: With dead ends: 64479 [2024-11-06 19:48:56,876 INFO L226 Difference]: Without dead ends: 32633 [2024-11-06 19:48:56,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:48:56,894 INFO L432 NwaCegarLoop]: 1359 mSDtfsCounter, 1178 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:56,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1441 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:48:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32633 states. [2024-11-06 19:48:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32633 to 32632. [2024-11-06 19:48:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32632 states, 32631 states have (on average 1.1368330728448408) internal successors, (37096), 32631 states have internal predecessors, (37096), 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) [2024-11-06 19:48:57,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32632 states to 32632 states and 37096 transitions. [2024-11-06 19:48:57,302 INFO L78 Accepts]: Start accepts. Automaton has 32632 states and 37096 transitions. Word has length 270 [2024-11-06 19:48:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:57,303 INFO L471 AbstractCegarLoop]: Abstraction has 32632 states and 37096 transitions. [2024-11-06 19:48:57,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-11-06 19:48:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 32632 states and 37096 transitions. [2024-11-06 19:48:57,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-06 19:48:57,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:57,309 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:57,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 19:48:57,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:48:57,510 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:57,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:57,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1197651363, now seen corresponding path program 1 times [2024-11-06 19:48:57,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:57,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057872640] [2024-11-06 19:48:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:57,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-06 19:48:57,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:57,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057872640] [2024-11-06 19:48:57,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057872640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:57,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:57,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:48:57,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826197658] [2024-11-06 19:48:57,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:57,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:57,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:57,749 INFO L87 Difference]: Start difference. First operand 32632 states and 37096 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2024-11-06 19:49:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:01,279 INFO L93 Difference]: Finished difference Result 76288 states and 87829 transitions. [2024-11-06 19:49:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:01,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 320 [2024-11-06 19:49:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:01,324 INFO L225 Difference]: With dead ends: 76288 [2024-11-06 19:49:01,324 INFO L226 Difference]: Without dead ends: 44445 [2024-11-06 19:49:01,343 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 [2024-11-06 19:49:01,344 INFO L432 NwaCegarLoop]: 1802 mSDtfsCounter, 834 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:01,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1945 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-06 19:49:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44445 states. [2024-11-06 19:49:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44445 to 43654. [2024-11-06 19:49:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43654 states, 43653 states have (on average 1.1179300391725655) internal successors, (48801), 43653 states have internal predecessors, (48801), 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) [2024-11-06 19:49:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43654 states to 43654 states and 48801 transitions. [2024-11-06 19:49:01,808 INFO L78 Accepts]: Start accepts. Automaton has 43654 states and 48801 transitions. Word has length 320 [2024-11-06 19:49:01,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:01,809 INFO L471 AbstractCegarLoop]: Abstraction has 43654 states and 48801 transitions. [2024-11-06 19:49:01,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2024-11-06 19:49:01,809 INFO L276 IsEmpty]: Start isEmpty. Operand 43654 states and 48801 transitions. [2024-11-06 19:49:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-06 19:49:01,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:01,819 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:01,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 19:49:01,823 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:01,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1315903409, now seen corresponding path program 1 times [2024-11-06 19:49:01,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:01,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190745746] [2024-11-06 19:49:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:01,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 182 proven. 113 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-06 19:49:03,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:03,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190745746] [2024-11-06 19:49:03,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190745746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:49:03,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687367628] [2024-11-06 19:49:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:03,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:49:03,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:49:03,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 19:49:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:03,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:49:03,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:49:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-06 19:49:03,512 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:49:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687367628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:03,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:49:03,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-06 19:49:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095113238] [2024-11-06 19:49:03,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:03,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:03,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:03,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:03,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:49:03,514 INFO L87 Difference]: Start difference. First operand 43654 states and 48801 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-06 19:49:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:06,528 INFO L93 Difference]: Finished difference Result 86510 states and 96800 transitions. [2024-11-06 19:49:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:06,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 335 [2024-11-06 19:49:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:06,582 INFO L225 Difference]: With dead ends: 86510 [2024-11-06 19:49:06,582 INFO L226 Difference]: Without dead ends: 43645 [2024-11-06 19:49:06,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:49:06,611 INFO L432 NwaCegarLoop]: 685 mSDtfsCounter, 1074 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:06,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 813 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-06 19:49:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2024-11-06 19:49:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43644. [2024-11-06 19:49:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43644 states, 43643 states have (on average 1.086634740966478) internal successors, (47424), 43643 states have internal predecessors, (47424), 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) [2024-11-06 19:49:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43644 states to 43644 states and 47424 transitions. [2024-11-06 19:49:07,262 INFO L78 Accepts]: Start accepts. Automaton has 43644 states and 47424 transitions. Word has length 335 [2024-11-06 19:49:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:07,263 INFO L471 AbstractCegarLoop]: Abstraction has 43644 states and 47424 transitions. [2024-11-06 19:49:07,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-06 19:49:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 43644 states and 47424 transitions. [2024-11-06 19:49:07,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-06 19:49:07,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:07,271 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:07,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 19:49:07,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:07,472 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:07,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:07,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1592619154, now seen corresponding path program 1 times [2024-11-06 19:49:07,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:07,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78300798] [2024-11-06 19:49:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:07,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-06 19:49:07,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:07,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78300798] [2024-11-06 19:49:07,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78300798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:07,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:07,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:07,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414729090] [2024-11-06 19:49:07,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:07,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:49:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:49:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:49:07,622 INFO L87 Difference]: Start difference. First operand 43644 states and 47424 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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) [2024-11-06 19:49:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:13,351 INFO L93 Difference]: Finished difference Result 150460 states and 163818 transitions. [2024-11-06 19:49:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:49:13,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 377 [2024-11-06 19:49:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:13,462 INFO L225 Difference]: With dead ends: 150460 [2024-11-06 19:49:13,462 INFO L226 Difference]: Without dead ends: 107605 [2024-11-06 19:49:13,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:49:13,497 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 1713 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 1094 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 7098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1094 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:13,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 755 Invalid, 7098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1094 Valid, 6004 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-06 19:49:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107605 states. [2024-11-06 19:49:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107605 to 104326. [2024-11-06 19:49:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104326 states, 104325 states have (on average 1.0794728013419603) internal successors, (112616), 104325 states have internal predecessors, (112616), 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) [2024-11-06 19:49:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104326 states to 104326 states and 112616 transitions. [2024-11-06 19:49:14,678 INFO L78 Accepts]: Start accepts. Automaton has 104326 states and 112616 transitions. Word has length 377 [2024-11-06 19:49:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:14,678 INFO L471 AbstractCegarLoop]: Abstraction has 104326 states and 112616 transitions. [2024-11-06 19:49:14,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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) [2024-11-06 19:49:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 104326 states and 112616 transitions. [2024-11-06 19:49:14,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-06 19:49:14,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:14,683 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:14,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 19:49:14,683 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:14,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1410007016, now seen corresponding path program 1 times [2024-11-06 19:49:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927732176] [2024-11-06 19:49:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:14,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 354 proven. 110 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-06 19:49:15,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:15,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927732176] [2024-11-06 19:49:15,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927732176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:49:15,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312607849] [2024-11-06 19:49:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:15,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:15,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:49:15,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:49:15,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 19:49:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:15,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:49:15,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:49:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-11-06 19:49:15,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:49:15,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312607849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:15,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:49:15,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-06 19:49:15,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325164936] [2024-11-06 19:49:15,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:15,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:15,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:15,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:15,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:49:15,782 INFO L87 Difference]: Start difference. First operand 104326 states and 112616 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-11-06 19:49:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:18,540 INFO L93 Difference]: Finished difference Result 209441 states and 226030 transitions. [2024-11-06 19:49:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:18,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 420 [2024-11-06 19:49:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:18,666 INFO L225 Difference]: With dead ends: 209441 [2024-11-06 19:49:18,666 INFO L226 Difference]: Without dead ends: 105904 [2024-11-06 19:49:18,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:49:18,728 INFO L432 NwaCegarLoop]: 1386 mSDtfsCounter, 1010 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:18,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1472 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:49:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105904 states. [2024-11-06 19:49:19,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105904 to 104315. [2024-11-06 19:49:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104315 states, 104314 states have (on average 1.0673255747071342) internal successors, (111337), 104314 states have internal predecessors, (111337), 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) [2024-11-06 19:49:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104315 states to 104315 states and 111337 transitions. [2024-11-06 19:49:20,089 INFO L78 Accepts]: Start accepts. Automaton has 104315 states and 111337 transitions. Word has length 420 [2024-11-06 19:49:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:20,093 INFO L471 AbstractCegarLoop]: Abstraction has 104315 states and 111337 transitions. [2024-11-06 19:49:20,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-11-06 19:49:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 104315 states and 111337 transitions. [2024-11-06 19:49:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-06 19:49:20,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:20,102 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:20,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 19:49:20,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:20,303 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:20,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1183537067, now seen corresponding path program 1 times [2024-11-06 19:49:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266446115] [2024-11-06 19:49:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:20,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 387 proven. 113 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-06 19:49:21,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:21,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266446115] [2024-11-06 19:49:21,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266446115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:49:21,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181287537] [2024-11-06 19:49:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:21,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:21,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:49:21,760 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:49:21,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 19:49:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:21,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:49:21,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:49:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-06 19:49:22,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:49:22,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181287537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:22,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:49:22,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-06 19:49:22,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637310093] [2024-11-06 19:49:22,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:22,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:22,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:49:22,025 INFO L87 Difference]: Start difference. First operand 104315 states and 111337 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2024-11-06 19:49:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:24,952 INFO L93 Difference]: Finished difference Result 232249 states and 248873 transitions. [2024-11-06 19:49:24,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:24,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 438 [2024-11-06 19:49:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:25,113 INFO L225 Difference]: With dead ends: 232249 [2024-11-06 19:49:25,114 INFO L226 Difference]: Without dead ends: 128723 [2024-11-06 19:49:25,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:49:25,186 INFO L432 NwaCegarLoop]: 1630 mSDtfsCounter, 859 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:25,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1751 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 19:49:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128723 states. [2024-11-06 19:49:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128723 to 126349. [2024-11-06 19:49:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126349 states, 126348 states have (on average 1.068984075727356) internal successors, (135064), 126348 states have internal predecessors, (135064), 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) [2024-11-06 19:49:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126349 states to 126349 states and 135064 transitions. [2024-11-06 19:49:26,964 INFO L78 Accepts]: Start accepts. Automaton has 126349 states and 135064 transitions. Word has length 438 [2024-11-06 19:49:26,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:26,965 INFO L471 AbstractCegarLoop]: Abstraction has 126349 states and 135064 transitions. [2024-11-06 19:49:26,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2024-11-06 19:49:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 126349 states and 135064 transitions. [2024-11-06 19:49:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-06 19:49:26,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:26,973 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:26,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 19:49:27,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-06 19:49:27,178 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:27,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1704973618, now seen corresponding path program 1 times [2024-11-06 19:49:27,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:27,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366089489] [2024-11-06 19:49:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:27,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 458 proven. 110 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-06 19:49:28,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:28,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366089489] [2024-11-06 19:49:28,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366089489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:49:28,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629223360] [2024-11-06 19:49:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:28,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:28,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:49:28,102 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:49:28,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 19:49:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:28,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:49:28,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:49:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-06 19:49:28,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:49:28,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629223360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:28,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:49:28,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-06 19:49:28,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578833325] [2024-11-06 19:49:28,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:28,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:28,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:28,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:49:28,425 INFO L87 Difference]: Start difference. First operand 126349 states and 135064 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2024-11-06 19:49:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:31,445 INFO L93 Difference]: Finished difference Result 254270 states and 271723 transitions. [2024-11-06 19:49:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:31,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 475 [2024-11-06 19:49:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:31,599 INFO L225 Difference]: With dead ends: 254270 [2024-11-06 19:49:31,599 INFO L226 Difference]: Without dead ends: 128710 [2024-11-06 19:49:31,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:49:31,674 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 979 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:31,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 496 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 19:49:31,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128710 states. [2024-11-06 19:49:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128710 to 127121. [2024-11-06 19:49:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127121 states, 127120 states have (on average 1.0594162995594714) internal successors, (134673), 127120 states have internal predecessors, (134673), 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) [2024-11-06 19:49:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 134673 transitions. [2024-11-06 19:49:33,232 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 134673 transitions. Word has length 475 [2024-11-06 19:49:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:33,232 INFO L471 AbstractCegarLoop]: Abstraction has 127121 states and 134673 transitions. [2024-11-06 19:49:33,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2024-11-06 19:49:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 134673 transitions. [2024-11-06 19:49:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2024-11-06 19:49:33,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:33,240 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:33,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-06 19:49:33,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-06 19:49:33,442 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:33,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:33,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1798314981, now seen corresponding path program 1 times [2024-11-06 19:49:33,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:33,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595296849] [2024-11-06 19:49:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:33,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 458 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2024-11-06 19:49:34,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:34,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595296849] [2024-11-06 19:49:34,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595296849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:34,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:34,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199402268] [2024-11-06 19:49:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:34,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:34,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:34,454 INFO L87 Difference]: Start difference. First operand 127121 states and 134673 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2024-11-06 19:49:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:38,605 INFO L93 Difference]: Finished difference Result 250283 states and 266178 transitions. [2024-11-06 19:49:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:38,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 496 [2024-11-06 19:49:38,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:38,755 INFO L225 Difference]: With dead ends: 250283 [2024-11-06 19:49:38,755 INFO L226 Difference]: Without dead ends: 137336 [2024-11-06 19:49:38,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:38,795 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 1179 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:38,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 364 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-06 19:49:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137336 states. [2024-11-06 19:49:39,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137336 to 137336. [2024-11-06 19:49:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137336 states, 137335 states have (on average 1.0587905486583902) internal successors, (145409), 137335 states have internal predecessors, (145409), 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) [2024-11-06 19:49:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137336 states to 137336 states and 145409 transitions. [2024-11-06 19:49:40,277 INFO L78 Accepts]: Start accepts. Automaton has 137336 states and 145409 transitions. Word has length 496 [2024-11-06 19:49:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:40,277 INFO L471 AbstractCegarLoop]: Abstraction has 137336 states and 145409 transitions. [2024-11-06 19:49:40,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2024-11-06 19:49:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 137336 states and 145409 transitions. [2024-11-06 19:49:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-06 19:49:40,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:40,289 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:40,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-06 19:49:40,290 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:40,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:40,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2146804446, now seen corresponding path program 1 times [2024-11-06 19:49:40,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:40,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279289347] [2024-11-06 19:49:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:40,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-11-06 19:49:40,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:40,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279289347] [2024-11-06 19:49:40,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279289347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:40,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:40,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:40,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190382462] [2024-11-06 19:49:40,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:40,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:40,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:40,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:40,516 INFO L87 Difference]: Start difference. First operand 137336 states and 145409 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-11-06 19:49:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:43,334 INFO L93 Difference]: Finished difference Result 261291 states and 277166 transitions. [2024-11-06 19:49:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:43,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 537 [2024-11-06 19:49:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:43,469 INFO L225 Difference]: With dead ends: 261291 [2024-11-06 19:49:43,469 INFO L226 Difference]: Without dead ends: 138129 [2024-11-06 19:49:43,778 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 [2024-11-06 19:49:43,779 INFO L432 NwaCegarLoop]: 1769 mSDtfsCounter, 722 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:43,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1898 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:49:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138129 states. [2024-11-06 19:49:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138129 to 138124. [2024-11-06 19:49:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138124 states, 138123 states have (on average 1.0587447420053142) internal successors, (146237), 138123 states have internal predecessors, (146237), 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) [2024-11-06 19:49:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138124 states to 138124 states and 146237 transitions. [2024-11-06 19:49:45,238 INFO L78 Accepts]: Start accepts. Automaton has 138124 states and 146237 transitions. Word has length 537 [2024-11-06 19:49:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:45,239 INFO L471 AbstractCegarLoop]: Abstraction has 138124 states and 146237 transitions. [2024-11-06 19:49:45,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-11-06 19:49:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 138124 states and 146237 transitions. [2024-11-06 19:49:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-11-06 19:49:45,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:45,250 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:45,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-06 19:49:45,250 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:45,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash 726924060, now seen corresponding path program 1 times [2024-11-06 19:49:45,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:45,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600414940] [2024-11-06 19:49:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:45,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2024-11-06 19:49:46,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:46,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600414940] [2024-11-06 19:49:46,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600414940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:46,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:46,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801654153] [2024-11-06 19:49:46,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:46,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:46,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:46,238 INFO L87 Difference]: Start difference. First operand 138124 states and 146237 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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)