./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label04.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/Problem03_label04.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', '9287609067f4f1cf68c9add8d10c44a8dc20a6e66127e88f3c147131798fea5d'] 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/Problem03_label04.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 9287609067f4f1cf68c9add8d10c44a8dc20a6e66127e88f3c147131798fea5d --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:55:36,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:55:36,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:55:36,964 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:55:36,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:55:36,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:55:36,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:55:36,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:55:36,992 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:55:36,993 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:55:36,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:55:36,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:55:36,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:55:36,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:55:36,994 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:55:36,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:55:36,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:55:36,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:55:36,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:55:36,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:55:36,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:55:36,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:55:36,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:55:36,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:55:36,995 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:55:36,995 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:55:36,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:55:36,996 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:55:36,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:55:36,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:55:36,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:55:36,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:55:36,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:55:36,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:55:36,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:55:36,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:55:36,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:55:36,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:55:36,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:55:36,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:55:36,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:55:36,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:55:36,997 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 -> 9287609067f4f1cf68c9add8d10c44a8dc20a6e66127e88f3c147131798fea5d [2024-11-06 18:55:37,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:55:37,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:55:37,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:55:37,286 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:55:37,286 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:55:37,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label04.c [2024-11-06 18:55:38,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:55:38,991 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:55:38,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label04.c [2024-11-06 18:55:39,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2248bd2ab/7623e847cf934d6cab1c7506eb872570/FLAGe70ee9e4c [2024-11-06 18:55:39,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2248bd2ab/7623e847cf934d6cab1c7506eb872570 [2024-11-06 18:55:39,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:55:39,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:55:39,035 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:55:39,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:55:39,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:55:39,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b75a575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39, skipping insertion in model container [2024-11-06 18:55:39,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,099 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:55:39,443 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/Problem03_label04.c[60959,60972] [2024-11-06 18:55:39,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:55:39,469 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:55:39,601 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/Problem03_label04.c[60959,60972] [2024-11-06 18:55:39,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:55:39,624 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:55:39,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39 WrapperNode [2024-11-06 18:55:39,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:55:39,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:55:39,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:55:39,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:55:39,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,736 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-06 18:55:39,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:55:39,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:55:39,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:55:39,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:55:39,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,790 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 18:55:39,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:55:39,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:55:39,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:55:39,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:55:39,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (1/1) ... [2024-11-06 18:55:39,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:55:39,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:55:39,987 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 18:55:39,992 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 18:55:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:55:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:55:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:55:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:55:40,093 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:55:40,094 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:55:41,570 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-06 18:55:41,570 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:55:41,580 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:55:41,580 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 18:55:41,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:55:41 BoogieIcfgContainer [2024-11-06 18:55:41,580 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:55:41,582 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:55:41,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:55:41,585 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:55:41,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:55:39" (1/3) ... [2024-11-06 18:55:41,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b74a87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:55:41, skipping insertion in model container [2024-11-06 18:55:41,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:55:39" (2/3) ... [2024-11-06 18:55:41,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b74a87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:55:41, skipping insertion in model container [2024-11-06 18:55:41,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:55:41" (3/3) ... [2024-11-06 18:55:41,587 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label04.c [2024-11-06 18:55:41,597 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:55:41,598 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:55:41,657 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:55:41,679 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;@598fc5d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:55:41,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:55:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 18:55:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-06 18:55:41,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:41,704 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:41,704 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:41,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2019161402, now seen corresponding path program 1 times [2024-11-06 18:55:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:41,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129450672] [2024-11-06 18:55:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:41,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:42,471 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 18:55:42,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129450672] [2024-11-06 18:55:42,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129450672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:42,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:42,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:55:42,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639044208] [2024-11-06 18:55:42,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:42,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:55:42,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:42,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:55:42,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:55:42,498 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 18:55:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:43,519 INFO L93 Difference]: Finished difference Result 855 states and 1496 transitions. [2024-11-06 18:55:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:55:43,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 198 [2024-11-06 18:55:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:43,536 INFO L225 Difference]: With dead ends: 855 [2024-11-06 18:55:43,539 INFO L226 Difference]: Without dead ends: 460 [2024-11-06 18:55:43,546 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 18:55:43,548 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 98 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:43,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 176 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-06 18:55:43,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-06 18:55:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 459. [2024-11-06 18:55:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.5502183406113537) internal successors, (710), 458 states have internal predecessors, (710), 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 18:55:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 710 transitions. [2024-11-06 18:55:43,621 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 710 transitions. Word has length 198 [2024-11-06 18:55:43,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:43,622 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 710 transitions. [2024-11-06 18:55:43,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 18:55:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 710 transitions. [2024-11-06 18:55:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-06 18:55:43,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:43,628 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:43,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:55:43,629 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:43,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash -748346870, now seen corresponding path program 1 times [2024-11-06 18:55:43,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:43,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694919654] [2024-11-06 18:55:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:43,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:55:43,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:43,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694919654] [2024-11-06 18:55:43,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694919654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:43,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:43,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:55:43,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438015593] [2024-11-06 18:55:43,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:43,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:55:43,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:43,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:55:43,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:55:43,899 INFO L87 Difference]: Start difference. First operand 459 states and 710 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 18:55:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:44,544 INFO L93 Difference]: Finished difference Result 1340 states and 2081 transitions. [2024-11-06 18:55:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:55:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 203 [2024-11-06 18:55:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:44,547 INFO L225 Difference]: With dead ends: 1340 [2024-11-06 18:55:44,547 INFO L226 Difference]: Without dead ends: 883 [2024-11-06 18:55:44,548 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 18:55:44,549 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:44,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 180 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:55:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-11-06 18:55:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 880. [2024-11-06 18:55:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 1.4675767918088738) internal successors, (1290), 879 states have internal predecessors, (1290), 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 18:55:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1290 transitions. [2024-11-06 18:55:44,566 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1290 transitions. Word has length 203 [2024-11-06 18:55:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:44,567 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1290 transitions. [2024-11-06 18:55:44,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 18:55:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1290 transitions. [2024-11-06 18:55:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-06 18:55:44,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:44,569 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:44,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:55:44,570 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:44,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash 359489433, now seen corresponding path program 1 times [2024-11-06 18:55:44,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:44,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006824008] [2024-11-06 18:55:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:44,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:55:44,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:44,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006824008] [2024-11-06 18:55:44,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006824008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:44,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:44,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:55:44,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956612840] [2024-11-06 18:55:44,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:44,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:55:44,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:44,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:55:44,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:55:44,716 INFO L87 Difference]: Start difference. First operand 880 states and 1290 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 18:55:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:45,387 INFO L93 Difference]: Finished difference Result 2594 states and 3819 transitions. [2024-11-06 18:55:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:55:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 206 [2024-11-06 18:55:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:45,392 INFO L225 Difference]: With dead ends: 2594 [2024-11-06 18:55:45,392 INFO L226 Difference]: Without dead ends: 1716 [2024-11-06 18:55:45,393 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 18:55:45,393 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:45,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:55:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2024-11-06 18:55:45,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1696. [2024-11-06 18:55:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1695 states have (on average 1.43834808259587) internal successors, (2438), 1695 states have internal predecessors, (2438), 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 18:55:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2438 transitions. [2024-11-06 18:55:45,423 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2438 transitions. Word has length 206 [2024-11-06 18:55:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:45,423 INFO L471 AbstractCegarLoop]: Abstraction has 1696 states and 2438 transitions. [2024-11-06 18:55:45,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 18:55:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2438 transitions. [2024-11-06 18:55:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-06 18:55:45,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:45,427 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:45,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 18:55:45,427 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:45,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1789351684, now seen corresponding path program 1 times [2024-11-06 18:55:45,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:45,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453751884] [2024-11-06 18:55:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:45,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:55:45,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:45,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453751884] [2024-11-06 18:55:45,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453751884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:45,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:55:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37671707] [2024-11-06 18:55:45,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:45,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:55:45,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:45,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:55:45,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:55:45,954 INFO L87 Difference]: Start difference. First operand 1696 states and 2438 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 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 18:55:46,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:46,802 INFO L93 Difference]: Finished difference Result 3531 states and 5126 transitions. [2024-11-06 18:55:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:55:46,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 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 213 [2024-11-06 18:55:46,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:46,808 INFO L225 Difference]: With dead ends: 3531 [2024-11-06 18:55:46,808 INFO L226 Difference]: Without dead ends: 1663 [2024-11-06 18:55:46,810 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 18:55:46,810 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 299 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:46,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 47 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:55:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2024-11-06 18:55:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1663. [2024-11-06 18:55:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 1.3243080625752106) internal successors, (2201), 1662 states have internal predecessors, (2201), 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 18:55:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2201 transitions. [2024-11-06 18:55:46,835 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2201 transitions. Word has length 213 [2024-11-06 18:55:46,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:46,835 INFO L471 AbstractCegarLoop]: Abstraction has 1663 states and 2201 transitions. [2024-11-06 18:55:46,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 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 18:55:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2201 transitions. [2024-11-06 18:55:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-06 18:55:46,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:46,839 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:46,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 18:55:46,839 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:46,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash -204580663, now seen corresponding path program 1 times [2024-11-06 18:55:46,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:46,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791821999] [2024-11-06 18:55:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:46,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:55:47,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791821999] [2024-11-06 18:55:47,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791821999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:47,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:47,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:55:47,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063005898] [2024-11-06 18:55:47,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:47,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:55:47,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:47,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:55:47,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:55:47,327 INFO L87 Difference]: Start difference. First operand 1663 states and 2201 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 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 18:55:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:48,207 INFO L93 Difference]: Finished difference Result 4323 states and 5738 transitions. [2024-11-06 18:55:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:55:48,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 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 229 [2024-11-06 18:55:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:48,215 INFO L225 Difference]: With dead ends: 4323 [2024-11-06 18:55:48,215 INFO L226 Difference]: Without dead ends: 2488 [2024-11-06 18:55:48,217 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 18:55:48,217 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 194 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:48,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 94 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:55:48,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2024-11-06 18:55:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2487. [2024-11-06 18:55:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2486 states have (on average 1.3073209975864843) internal successors, (3250), 2486 states have internal predecessors, (3250), 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 18:55:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3250 transitions. [2024-11-06 18:55:48,254 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3250 transitions. Word has length 229 [2024-11-06 18:55:48,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:48,254 INFO L471 AbstractCegarLoop]: Abstraction has 2487 states and 3250 transitions. [2024-11-06 18:55:48,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 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 18:55:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3250 transitions. [2024-11-06 18:55:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-06 18:55:48,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:48,259 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:48,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 18:55:48,259 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:48,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash 929972964, now seen corresponding path program 1 times [2024-11-06 18:55:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:48,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845570933] [2024-11-06 18:55:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 18:55:48,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:48,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845570933] [2024-11-06 18:55:48,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845570933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:48,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:48,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:55:48,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219277509] [2024-11-06 18:55:48,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:48,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:55:48,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:48,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:55:48,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:55:48,405 INFO L87 Difference]: Start difference. First operand 2487 states and 3250 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 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 18:55:49,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:49,014 INFO L93 Difference]: Finished difference Result 6628 states and 8636 transitions. [2024-11-06 18:55:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:55:49,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 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 231 [2024-11-06 18:55:49,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:49,026 INFO L225 Difference]: With dead ends: 6628 [2024-11-06 18:55:49,026 INFO L226 Difference]: Without dead ends: 4143 [2024-11-06 18:55:49,029 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 18:55:49,030 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 202 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:49,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 117 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:55:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2024-11-06 18:55:49,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4140. [2024-11-06 18:55:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4140 states, 4139 states have (on average 1.296206813239913) internal successors, (5365), 4139 states have internal predecessors, (5365), 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 18:55:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 5365 transitions. [2024-11-06 18:55:49,108 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 5365 transitions. Word has length 231 [2024-11-06 18:55:49,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:49,108 INFO L471 AbstractCegarLoop]: Abstraction has 4140 states and 5365 transitions. [2024-11-06 18:55:49,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 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 18:55:49,109 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 5365 transitions. [2024-11-06 18:55:49,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-06 18:55:49,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:49,116 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:49,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 18:55:49,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:49,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:49,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1544210178, now seen corresponding path program 1 times [2024-11-06 18:55:49,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:49,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141986894] [2024-11-06 18:55:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:49,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:55:49,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:49,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141986894] [2024-11-06 18:55:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141986894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:55:49,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070690091] [2024-11-06 18:55:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:49,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:55:49,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:55:49,430 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 18:55:49,464 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 18:55:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:49,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:55:49,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:55:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-06 18:55:50,090 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:55:50,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070690091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:50,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:55:50,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:55:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201719732] [2024-11-06 18:55:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:50,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:55:50,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:50,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:55:50,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:55:50,096 INFO L87 Difference]: Start difference. First operand 4140 states and 5365 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 18:55:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:51,227 INFO L93 Difference]: Finished difference Result 8287 states and 10744 transitions. [2024-11-06 18:55:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:55:51,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 236 [2024-11-06 18:55:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:51,251 INFO L225 Difference]: With dead ends: 8287 [2024-11-06 18:55:51,255 INFO L226 Difference]: Without dead ends: 4149 [2024-11-06 18:55:51,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:55:51,263 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 26 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:51,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 320 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-06 18:55:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2024-11-06 18:55:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 4140. [2024-11-06 18:55:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4140 states, 4139 states have (on average 1.285817830393815) internal successors, (5322), 4139 states have internal predecessors, (5322), 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 18:55:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 5322 transitions. [2024-11-06 18:55:51,392 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 5322 transitions. Word has length 236 [2024-11-06 18:55:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:51,393 INFO L471 AbstractCegarLoop]: Abstraction has 4140 states and 5322 transitions. [2024-11-06 18:55:51,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 18:55:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 5322 transitions. [2024-11-06 18:55:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-06 18:55:51,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:51,405 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:51,431 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 18:55:51,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:55:51,606 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:51,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:51,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1415515234, now seen corresponding path program 1 times [2024-11-06 18:55:51,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:51,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123301618] [2024-11-06 18:55:51,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:51,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:55:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123301618] [2024-11-06 18:55:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123301618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:55:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861944271] [2024-11-06 18:55:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:51,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:55:51,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:55:51,926 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 18:55:51,937 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 18:55:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:52,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:55:52,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:55:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:55:52,103 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:55:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861944271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:52,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:55:52,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:55:52,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830506620] [2024-11-06 18:55:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:52,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:55:52,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:55:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:55:52,105 INFO L87 Difference]: Start difference. First operand 4140 states and 5322 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 18:55:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:52,675 INFO L93 Difference]: Finished difference Result 12344 states and 15868 transitions. [2024-11-06 18:55:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:55:52,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 242 [2024-11-06 18:55:52,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:52,697 INFO L225 Difference]: With dead ends: 12344 [2024-11-06 18:55:52,697 INFO L226 Difference]: Without dead ends: 8206 [2024-11-06 18:55:52,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:55:52,703 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 212 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:52,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 342 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:55:52,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8206 states. [2024-11-06 18:55:52,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8206 to 8200. [2024-11-06 18:55:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8199 states have (on average 1.17685083546774) internal successors, (9649), 8199 states have internal predecessors, (9649), 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 18:55:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 9649 transitions. [2024-11-06 18:55:52,871 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 9649 transitions. Word has length 242 [2024-11-06 18:55:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:52,872 INFO L471 AbstractCegarLoop]: Abstraction has 8200 states and 9649 transitions. [2024-11-06 18:55:52,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 18:55:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 9649 transitions. [2024-11-06 18:55:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-06 18:55:52,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:52,884 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:52,898 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 18:55:53,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:55:53,085 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:53,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash -602518558, now seen corresponding path program 1 times [2024-11-06 18:55:53,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:53,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424680904] [2024-11-06 18:55:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:53,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:55:53,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424680904] [2024-11-06 18:55:53,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424680904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:53,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:53,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:55:53,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296300244] [2024-11-06 18:55:53,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:53,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:55:53,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:53,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:55:53,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:55:53,247 INFO L87 Difference]: Start difference. First operand 8200 states and 9649 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 18:55:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:53,814 INFO L93 Difference]: Finished difference Result 20458 states and 24512 transitions. [2024-11-06 18:55:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:55:53,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 252 [2024-11-06 18:55:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:53,846 INFO L225 Difference]: With dead ends: 20458 [2024-11-06 18:55:53,847 INFO L226 Difference]: Without dead ends: 12260 [2024-11-06 18:55:53,866 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 18:55:53,866 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 210 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:53,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 127 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:55:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12260 states. [2024-11-06 18:55:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12260 to 12260. [2024-11-06 18:55:54,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12260 states, 12259 states have (on average 1.1418549637001387) internal successors, (13998), 12259 states have internal predecessors, (13998), 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 18:55:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12260 states to 12260 states and 13998 transitions. [2024-11-06 18:55:54,099 INFO L78 Accepts]: Start accepts. Automaton has 12260 states and 13998 transitions. Word has length 252 [2024-11-06 18:55:54,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:54,099 INFO L471 AbstractCegarLoop]: Abstraction has 12260 states and 13998 transitions. [2024-11-06 18:55:54,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 18:55:54,100 INFO L276 IsEmpty]: Start isEmpty. Operand 12260 states and 13998 transitions. [2024-11-06 18:55:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-06 18:55:54,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:54,116 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:54,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 18:55:54,116 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:54,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash -380245532, now seen corresponding path program 1 times [2024-11-06 18:55:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:54,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627136445] [2024-11-06 18:55:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:54,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 18:55:54,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:54,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627136445] [2024-11-06 18:55:54,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627136445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:55:54,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284978630] [2024-11-06 18:55:54,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:54,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:55:54,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:55:54,442 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 18:55:54,444 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 18:55:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:54,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:55:54,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:55:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:55:54,623 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:55:54,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284978630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:54,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:55:54,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:55:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018024522] [2024-11-06 18:55:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:54,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:55:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:55:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:55:54,625 INFO L87 Difference]: Start difference. First operand 12260 states and 13998 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 18:55:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:55,205 INFO L93 Difference]: Finished difference Result 24519 states and 27996 transitions. [2024-11-06 18:55:55,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:55:55,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 264 [2024-11-06 18:55:55,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:55,223 INFO L225 Difference]: With dead ends: 24519 [2024-11-06 18:55:55,223 INFO L226 Difference]: Without dead ends: 12261 [2024-11-06 18:55:55,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:55:55,233 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 213 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:55,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 290 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:55:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12261 states. [2024-11-06 18:55:55,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12261 to 12255. [2024-11-06 18:55:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12255 states, 12254 states have (on average 1.109760078341766) internal successors, (13599), 12254 states have internal predecessors, (13599), 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 18:55:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12255 states to 12255 states and 13599 transitions. [2024-11-06 18:55:55,352 INFO L78 Accepts]: Start accepts. Automaton has 12255 states and 13599 transitions. Word has length 264 [2024-11-06 18:55:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:55,352 INFO L471 AbstractCegarLoop]: Abstraction has 12255 states and 13599 transitions. [2024-11-06 18:55:55,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 18:55:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12255 states and 13599 transitions. [2024-11-06 18:55:55,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-06 18:55:55,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:55,364 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:55,378 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 18:55:55,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:55:55,566 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:55,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1782728857, now seen corresponding path program 1 times [2024-11-06 18:55:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:55,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49726191] [2024-11-06 18:55:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:55,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-06 18:55:55,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:55,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49726191] [2024-11-06 18:55:55,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49726191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:55,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:55,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:55:55,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793692469] [2024-11-06 18:55:55,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:55,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:55:55,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:55,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:55:55,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:55:55,719 INFO L87 Difference]: Start difference. First operand 12255 states and 13599 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 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 18:55:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:56,462 INFO L93 Difference]: Finished difference Result 44440 states and 49044 transitions. [2024-11-06 18:55:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:55:56,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 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 18:55:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:56,506 INFO L225 Difference]: With dead ends: 44440 [2024-11-06 18:55:56,506 INFO L226 Difference]: Without dead ends: 32187 [2024-11-06 18:55:56,519 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 18:55:56,519 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 705 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:56,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 304 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:55:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32187 states. [2024-11-06 18:55:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32187 to 27086. [2024-11-06 18:55:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27086 states, 27085 states have (on average 1.0995754107439542) internal successors, (29782), 27085 states have internal predecessors, (29782), 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 18:55:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27086 states to 27086 states and 29782 transitions. [2024-11-06 18:55:56,779 INFO L78 Accepts]: Start accepts. Automaton has 27086 states and 29782 transitions. Word has length 270 [2024-11-06 18:55:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:56,779 INFO L471 AbstractCegarLoop]: Abstraction has 27086 states and 29782 transitions. [2024-11-06 18:55:56,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 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 18:55:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 27086 states and 29782 transitions. [2024-11-06 18:55:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-06 18:55:56,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:56,802 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 18:55:56,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 18:55:56,802 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:56,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1860358785, now seen corresponding path program 1 times [2024-11-06 18:55:56,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:56,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448846732] [2024-11-06 18:55:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:56,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:55:56,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448846732] [2024-11-06 18:55:56,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448846732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:56,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:56,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:55:56,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711666889] [2024-11-06 18:55:56,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:56,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:55:56,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:55:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:55:56,930 INFO L87 Difference]: Start difference. First operand 27086 states and 29782 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 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 18:55:57,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:55:57,617 INFO L93 Difference]: Finished difference Result 72270 states and 79444 transitions. [2024-11-06 18:55:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:55:57,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 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 273 [2024-11-06 18:55:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:55:57,668 INFO L225 Difference]: With dead ends: 72270 [2024-11-06 18:55:57,669 INFO L226 Difference]: Without dead ends: 45186 [2024-11-06 18:55:57,693 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 18:55:57,694 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:55:57,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 126 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:55:57,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45186 states. [2024-11-06 18:55:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45186 to 32975. [2024-11-06 18:55:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32975 states, 32974 states have (on average 1.1053860617456177) internal successors, (36449), 32974 states have internal predecessors, (36449), 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 18:55:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32975 states to 32975 states and 36449 transitions. [2024-11-06 18:55:58,313 INFO L78 Accepts]: Start accepts. Automaton has 32975 states and 36449 transitions. Word has length 273 [2024-11-06 18:55:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:55:58,313 INFO L471 AbstractCegarLoop]: Abstraction has 32975 states and 36449 transitions. [2024-11-06 18:55:58,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 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 18:55:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 32975 states and 36449 transitions. [2024-11-06 18:55:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-06 18:55:58,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:55:58,335 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-11-06 18:55:58,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 18:55:58,335 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:55:58,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:55:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2119318129, now seen corresponding path program 1 times [2024-11-06 18:55:58,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:55:58,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396797995] [2024-11-06 18:55:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:55:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:55:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:55:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:55:58,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:55:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396797995] [2024-11-06 18:55:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396797995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:55:58,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:55:58,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:55:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621761874] [2024-11-06 18:55:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:55:58,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 18:55:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:55:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 18:55:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:55:58,968 INFO L87 Difference]: Start difference. First operand 32975 states and 36449 transitions. Second operand has 5 states, 5 states have (on average 58.8) internal successors, (294), 4 states have internal predecessors, (294), 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 18:56:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:00,361 INFO L93 Difference]: Finished difference Result 66567 states and 73683 transitions. [2024-11-06 18:56:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 18:56:00,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 58.8) internal successors, (294), 4 states have internal predecessors, (294), 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 294 [2024-11-06 18:56:00,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:00,404 INFO L225 Difference]: With dead ends: 66567 [2024-11-06 18:56:00,404 INFO L226 Difference]: Without dead ends: 33797 [2024-11-06 18:56:00,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:56:00,430 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 733 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:00,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 110 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 18:56:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33797 states. [2024-11-06 18:56:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33797 to 33787. [2024-11-06 18:56:00,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33787 states, 33786 states have (on average 1.102646066418043) internal successors, (37254), 33786 states have internal predecessors, (37254), 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 18:56:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33787 states to 33787 states and 37254 transitions. [2024-11-06 18:56:00,872 INFO L78 Accepts]: Start accepts. Automaton has 33787 states and 37254 transitions. Word has length 294 [2024-11-06 18:56:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:00,873 INFO L471 AbstractCegarLoop]: Abstraction has 33787 states and 37254 transitions. [2024-11-06 18:56:00,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.8) internal successors, (294), 4 states have internal predecessors, (294), 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 18:56:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 33787 states and 37254 transitions. [2024-11-06 18:56:00,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-06 18:56:00,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:00,887 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:00,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 18:56:00,887 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:00,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -413567525, now seen corresponding path program 1 times [2024-11-06 18:56:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424574038] [2024-11-06 18:56:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 108 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-06 18:56:01,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:01,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424574038] [2024-11-06 18:56:01,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424574038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:01,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393019281] [2024-11-06 18:56:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:01,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:01,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:01,188 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 18:56:01,192 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 18:56:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:01,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:56:01,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-06 18:56:01,366 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:01,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393019281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:01,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:01,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:01,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174119813] [2024-11-06 18:56:01,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:01,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:01,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:01,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:01,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:01,370 INFO L87 Difference]: Start difference. First operand 33787 states and 37254 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 18:56:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:02,205 INFO L93 Difference]: Finished difference Result 83430 states and 91823 transitions. [2024-11-06 18:56:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:02,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 298 [2024-11-06 18:56:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:02,268 INFO L225 Difference]: With dead ends: 83430 [2024-11-06 18:56:02,269 INFO L226 Difference]: Without dead ends: 49848 [2024-11-06 18:56:02,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:02,297 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 195 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:02,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 336 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:56:02,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49848 states. [2024-11-06 18:56:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49848 to 48009. [2024-11-06 18:56:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48009 states, 48008 states have (on average 1.0926303949341776) internal successors, (52455), 48008 states have internal predecessors, (52455), 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 18:56:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48009 states to 48009 states and 52455 transitions. [2024-11-06 18:56:02,954 INFO L78 Accepts]: Start accepts. Automaton has 48009 states and 52455 transitions. Word has length 298 [2024-11-06 18:56:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:02,954 INFO L471 AbstractCegarLoop]: Abstraction has 48009 states and 52455 transitions. [2024-11-06 18:56:02,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 18:56:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 48009 states and 52455 transitions. [2024-11-06 18:56:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-06 18:56:02,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:02,984 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:02,997 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 18:56:03,188 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 18:56:03,189 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:03,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:03,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1737585342, now seen corresponding path program 1 times [2024-11-06 18:56:03,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:03,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255055444] [2024-11-06 18:56:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 108 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-06 18:56:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255055444] [2024-11-06 18:56:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255055444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976420462] [2024-11-06 18:56:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:03,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:03,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:03,653 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 18:56:03,656 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 18:56:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:03,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:56:03,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-06 18:56:04,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:04,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976420462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:04,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:04,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:04,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912365418] [2024-11-06 18:56:04,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:04,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:04,028 INFO L87 Difference]: Start difference. First operand 48009 states and 52455 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 18:56:04,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:04,768 INFO L93 Difference]: Finished difference Result 106398 states and 116103 transitions. [2024-11-06 18:56:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:04,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 318 [2024-11-06 18:56:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:04,845 INFO L225 Difference]: With dead ends: 106398 [2024-11-06 18:56:04,845 INFO L226 Difference]: Without dead ends: 58594 [2024-11-06 18:56:04,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:04,893 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 32 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:04,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 311 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:56:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58594 states. [2024-11-06 18:56:05,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58594 to 55518. [2024-11-06 18:56:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55518 states, 55517 states have (on average 1.0881171533043932) internal successors, (60409), 55517 states have internal predecessors, (60409), 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 18:56:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55518 states to 55518 states and 60409 transitions. [2024-11-06 18:56:05,672 INFO L78 Accepts]: Start accepts. Automaton has 55518 states and 60409 transitions. Word has length 318 [2024-11-06 18:56:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:05,672 INFO L471 AbstractCegarLoop]: Abstraction has 55518 states and 60409 transitions. [2024-11-06 18:56:05,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 18:56:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 55518 states and 60409 transitions. [2024-11-06 18:56:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-06 18:56:05,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:05,706 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:56:05,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 18:56:05,906 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 18:56:05,907 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:05,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:05,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1951129621, now seen corresponding path program 1 times [2024-11-06 18:56:05,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:05,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274717130] [2024-11-06 18:56:05,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:05,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-06 18:56:06,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:06,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274717130] [2024-11-06 18:56:06,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274717130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:06,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964447941] [2024-11-06 18:56:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:06,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:06,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:06,356 INFO L229 MonitoredProcess]: Starting monitored process 7 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 18:56:06,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 18:56:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:06,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:56:06,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 18:56:06,707 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:06,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964447941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:06,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:06,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:06,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114444342] [2024-11-06 18:56:06,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:06,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:06,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:06,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:06,710 INFO L87 Difference]: Start difference. First operand 55518 states and 60409 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 18:56:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:07,355 INFO L93 Difference]: Finished difference Result 109002 states and 118573 transitions. [2024-11-06 18:56:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:07,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 388 [2024-11-06 18:56:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:07,418 INFO L225 Difference]: With dead ends: 109002 [2024-11-06 18:56:07,418 INFO L226 Difference]: Without dead ends: 53689 [2024-11-06 18:56:07,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:07,455 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 160 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:07,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 313 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:56:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53689 states. [2024-11-06 18:56:07,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53689 to 53075. [2024-11-06 18:56:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53075 states, 53074 states have (on average 1.0733315747823793) internal successors, (56966), 53074 states have internal predecessors, (56966), 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 18:56:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53075 states to 53075 states and 56966 transitions. [2024-11-06 18:56:08,029 INFO L78 Accepts]: Start accepts. Automaton has 53075 states and 56966 transitions. Word has length 388 [2024-11-06 18:56:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:08,029 INFO L471 AbstractCegarLoop]: Abstraction has 53075 states and 56966 transitions. [2024-11-06 18:56:08,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 18:56:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 53075 states and 56966 transitions. [2024-11-06 18:56:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-06 18:56:08,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:08,059 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 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, 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, 3, 3, 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, 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 18:56:08,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 18:56:08,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-06 18:56:08,260 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:08,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash 51982177, now seen corresponding path program 1 times [2024-11-06 18:56:08,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:08,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768621032] [2024-11-06 18:56:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:08,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-06 18:56:08,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:08,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768621032] [2024-11-06 18:56:08,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768621032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:08,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912630362] [2024-11-06 18:56:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:08,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:08,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:08,563 INFO L229 MonitoredProcess]: Starting monitored process 8 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 18:56:08,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 18:56:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:08,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:56:08,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-06 18:56:08,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:08,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912630362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:08,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:08,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:08,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477710792] [2024-11-06 18:56:08,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:08,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:08,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:08,767 INFO L87 Difference]: Start difference. First operand 53075 states and 56966 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 18:56:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:09,183 INFO L93 Difference]: Finished difference Result 149230 states and 160178 transitions. [2024-11-06 18:56:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:09,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 394 [2024-11-06 18:56:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:09,283 INFO L225 Difference]: With dead ends: 149230 [2024-11-06 18:56:09,283 INFO L226 Difference]: Without dead ends: 96360 [2024-11-06 18:56:09,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:09,332 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 272 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:09,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 786 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:56:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96360 states. [2024-11-06 18:56:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96360 to 93920. [2024-11-06 18:56:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93920 states, 93919 states have (on average 1.0686974946496448) internal successors, (100371), 93919 states have internal predecessors, (100371), 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 18:56:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93920 states to 93920 states and 100371 transitions. [2024-11-06 18:56:10,709 INFO L78 Accepts]: Start accepts. Automaton has 93920 states and 100371 transitions. Word has length 394 [2024-11-06 18:56:10,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:10,710 INFO L471 AbstractCegarLoop]: Abstraction has 93920 states and 100371 transitions. [2024-11-06 18:56:10,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 18:56:10,710 INFO L276 IsEmpty]: Start isEmpty. Operand 93920 states and 100371 transitions. [2024-11-06 18:56:10,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-06 18:56:10,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:10,776 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:56:10,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 18:56:10,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:10,977 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:10,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:10,977 INFO L85 PathProgramCache]: Analyzing trace with hash -862585174, now seen corresponding path program 1 times [2024-11-06 18:56:10,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:10,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983970761] [2024-11-06 18:56:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:10,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 120 proven. 6 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-06 18:56:11,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:11,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983970761] [2024-11-06 18:56:11,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983970761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:11,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74114055] [2024-11-06 18:56:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:11,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:11,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:11,411 INFO L229 MonitoredProcess]: Starting monitored process 9 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 18:56:11,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 18:56:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:11,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:56:11,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-06 18:56:11,671 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74114055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:11,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:11,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:11,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657964342] [2024-11-06 18:56:11,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:11,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:56:11,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:11,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:56:11,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:56:11,673 INFO L87 Difference]: Start difference. First operand 93920 states and 100371 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 3 states have internal predecessors, (238), 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 18:56:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:12,991 INFO L93 Difference]: Finished difference Result 253256 states and 270563 transitions. [2024-11-06 18:56:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:56:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 3 states have internal predecessors, (238), 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 400 [2024-11-06 18:56:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:13,203 INFO L225 Difference]: With dead ends: 253256 [2024-11-06 18:56:13,203 INFO L226 Difference]: Without dead ends: 159541 [2024-11-06 18:56:13,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:56:13,291 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 494 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:13,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 292 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:56:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159541 states. [2024-11-06 18:56:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159541 to 147556. [2024-11-06 18:56:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147556 states, 147555 states have (on average 1.0697841482836907) internal successors, (157852), 147555 states have internal predecessors, (157852), 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 18:56:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147556 states to 147556 states and 157852 transitions. [2024-11-06 18:56:16,082 INFO L78 Accepts]: Start accepts. Automaton has 147556 states and 157852 transitions. Word has length 400 [2024-11-06 18:56:16,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:16,082 INFO L471 AbstractCegarLoop]: Abstraction has 147556 states and 157852 transitions. [2024-11-06 18:56:16,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 3 states have internal predecessors, (238), 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 18:56:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand 147556 states and 157852 transitions. [2024-11-06 18:56:16,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-06 18:56:16,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:16,136 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:16,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-06 18:56:16,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 18:56:16,337 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:16,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:16,337 INFO L85 PathProgramCache]: Analyzing trace with hash -355066912, now seen corresponding path program 1 times [2024-11-06 18:56:16,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:16,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287867497] [2024-11-06 18:56:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-06 18:56:16,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:16,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287867497] [2024-11-06 18:56:16,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287867497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:16,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:56:16,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:56:16,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986209010] [2024-11-06 18:56:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:16,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:56:16,677 INFO L87 Difference]: Start difference. First operand 147556 states and 157852 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 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 18:56:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:18,057 INFO L93 Difference]: Finished difference Result 434537 states and 464975 transitions. [2024-11-06 18:56:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 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 410 [2024-11-06 18:56:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:18,418 INFO L225 Difference]: With dead ends: 434537 [2024-11-06 18:56:18,419 INFO L226 Difference]: Without dead ends: 287186 [2024-11-06 18:56:18,468 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 18:56:18,469 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 185 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:18,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 485 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:56:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287186 states. [2024-11-06 18:56:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287186 to 287184. [2024-11-06 18:56:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287184 states, 287183 states have (on average 1.0698161102850796) internal successors, (307233), 287183 states have internal predecessors, (307233), 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 18:56:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287184 states to 287184 states and 307233 transitions. [2024-11-06 18:56:22,640 INFO L78 Accepts]: Start accepts. Automaton has 287184 states and 307233 transitions. Word has length 410 [2024-11-06 18:56:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:22,640 INFO L471 AbstractCegarLoop]: Abstraction has 287184 states and 307233 transitions. [2024-11-06 18:56:22,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 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 18:56:22,640 INFO L276 IsEmpty]: Start isEmpty. Operand 287184 states and 307233 transitions. [2024-11-06 18:56:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-06 18:56:22,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:22,690 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:22,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-06 18:56:22,690 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:22,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash -550258160, now seen corresponding path program 1 times [2024-11-06 18:56:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146195548] [2024-11-06 18:56:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-11-06 18:56:23,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:23,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146195548] [2024-11-06 18:56:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146195548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:23,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916279141] [2024-11-06 18:56:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:23,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:23,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:23,203 INFO L229 MonitoredProcess]: Starting monitored process 10 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 18:56:23,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:56:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:23,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:56:23,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-06 18:56:23,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916279141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:23,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:23,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:23,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561094508] [2024-11-06 18:56:23,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:23,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:23,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:23,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:23,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:23,545 INFO L87 Difference]: Start difference. First operand 287184 states and 307233 transitions. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 18:56:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:25,479 INFO L93 Difference]: Finished difference Result 609581 states and 653062 transitions. [2024-11-06 18:56:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:25,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 412 [2024-11-06 18:56:25,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:25,873 INFO L225 Difference]: With dead ends: 609581 [2024-11-06 18:56:25,874 INFO L226 Difference]: Without dead ends: 322602 [2024-11-06 18:56:25,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:25,956 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 148 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:25,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 328 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:56:26,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322602 states. [2024-11-06 18:56:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322602 to 312448. [2024-11-06 18:56:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312448 states, 312447 states have (on average 1.0739997503576606) internal successors, (335568), 312447 states have internal predecessors, (335568), 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 18:56:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312448 states to 312448 states and 335568 transitions. [2024-11-06 18:56:30,476 INFO L78 Accepts]: Start accepts. Automaton has 312448 states and 335568 transitions. Word has length 412 [2024-11-06 18:56:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:30,476 INFO L471 AbstractCegarLoop]: Abstraction has 312448 states and 335568 transitions. [2024-11-06 18:56:30,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 18:56:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand 312448 states and 335568 transitions. [2024-11-06 18:56:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-06 18:56:30,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:30,555 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:30,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-06 18:56:30,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:30,756 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:30,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:30,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1284374565, now seen corresponding path program 1 times [2024-11-06 18:56:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93534314] [2024-11-06 18:56:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-06 18:56:31,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:31,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93534314] [2024-11-06 18:56:31,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93534314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:31,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:56:31,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:56:31,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030814660] [2024-11-06 18:56:31,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:31,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:31,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:31,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:31,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:56:31,393 INFO L87 Difference]: Start difference. First operand 312448 states and 335568 transitions. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 18:56:33,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:33,307 INFO L93 Difference]: Finished difference Result 643651 states and 691333 transitions. [2024-11-06 18:56:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:33,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 437 [2024-11-06 18:56:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:33,731 INFO L225 Difference]: With dead ends: 643651 [2024-11-06 18:56:33,732 INFO L226 Difference]: Without dead ends: 331408 [2024-11-06 18:56:33,879 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 18:56:33,879 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 131 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:33,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 336 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:56:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331408 states. [2024-11-06 18:56:37,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331408 to 330136. [2024-11-06 18:56:38,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330136 states, 330135 states have (on average 1.072146243203538) internal successors, (353953), 330135 states have internal predecessors, (353953), 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 18:56:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330136 states to 330136 states and 353953 transitions. [2024-11-06 18:56:38,796 INFO L78 Accepts]: Start accepts. Automaton has 330136 states and 353953 transitions. Word has length 437 [2024-11-06 18:56:38,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:38,796 INFO L471 AbstractCegarLoop]: Abstraction has 330136 states and 353953 transitions. [2024-11-06 18:56:38,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 18:56:38,796 INFO L276 IsEmpty]: Start isEmpty. Operand 330136 states and 353953 transitions. [2024-11-06 18:56:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-06 18:56:38,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:38,860 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:38,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-06 18:56:38,860 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:38,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:38,861 INFO L85 PathProgramCache]: Analyzing trace with hash -942388938, now seen corresponding path program 1 times [2024-11-06 18:56:38,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:38,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600364138] [2024-11-06 18:56:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat