./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label15.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_label15.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', 'c9240c4aeadc96e65569656f5eb1191209fe6aaacfd216b5c85e62d05a03467a'] 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_label15.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 c9240c4aeadc96e65569656f5eb1191209fe6aaacfd216b5c85e62d05a03467a --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:56:11,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:56:11,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:56:11,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:56:11,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:56:11,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:56:11,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:56:11,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:56:11,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:56:11,369 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:56:11,369 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:56:11,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:56:11,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:56:11,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:56:11,370 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:56:11,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:56:11,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:56:11,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:56:11,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:56:11,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:56:11,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:56:11,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:56:11,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:56:11,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:56:11,371 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:56:11,371 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:56:11,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:56:11,371 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:56:11,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:56:11,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:56:11,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:56:11,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:56:11,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:56:11,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:56:11,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:56:11,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:56:11,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:56:11,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:56:11,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:56:11,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:56:11,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:56:11,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:56:11,373 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 -> c9240c4aeadc96e65569656f5eb1191209fe6aaacfd216b5c85e62d05a03467a [2024-11-06 18:56:11,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:56:11,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:56:11,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:56:11,667 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:56:11,667 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:56:11,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label15.c [2024-11-06 18:56:12,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:56:13,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:56:13,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label15.c [2024-11-06 18:56:13,422 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bccc359d2/f18eb1f745fe49fbb658653852820a11/FLAGfd75351a7 [2024-11-06 18:56:13,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bccc359d2/f18eb1f745fe49fbb658653852820a11 [2024-11-06 18:56:13,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:56:13,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:56:13,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:56:13,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:56:13,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:56:13,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:56:13" (1/1) ... [2024-11-06 18:56:13,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36fb5404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:13, skipping insertion in model container [2024-11-06 18:56:13,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:56:13" (1/1) ... [2024-11-06 18:56:13,506 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:56:13,905 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_label15.c[61228,61241] [2024-11-06 18:56:13,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:56:13,947 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:56:14,103 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_label15.c[61228,61241] [2024-11-06 18:56:14,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:56:14,136 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:56:14,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14 WrapperNode [2024-11-06 18:56:14,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:56:14,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:56:14,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:56:14,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:56:14,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,256 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-06 18:56:14,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:56:14,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:56:14,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:56:14,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:56:14,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,282 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,316 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 18:56:14,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:56:14,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:56:14,419 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:56:14,419 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:56:14,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (1/1) ... [2024-11-06 18:56:14,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:56:14,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:14,454 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 18:56:14,457 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 18:56:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:56:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:56:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:56:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:56:14,554 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:56:14,555 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:56:16,425 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-06 18:56:16,425 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:56:16,445 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:56:16,448 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 18:56:16,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:56:16 BoogieIcfgContainer [2024-11-06 18:56:16,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:56:16,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:56:16,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:56:16,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:56:16,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:56:13" (1/3) ... [2024-11-06 18:56:16,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361c7f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:56:16, skipping insertion in model container [2024-11-06 18:56:16,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:14" (2/3) ... [2024-11-06 18:56:16,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361c7f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:56:16, skipping insertion in model container [2024-11-06 18:56:16,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:56:16" (3/3) ... [2024-11-06 18:56:16,460 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label15.c [2024-11-06 18:56:16,475 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:56:16,475 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:56:16,548 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:56:16,560 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;@5e1080bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:56:16,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:56:16,569 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 18:56:16,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-06 18:56:16,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:16,582 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, 1, 1] [2024-11-06 18:56:16,583 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:16,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:16,587 INFO L85 PathProgramCache]: Analyzing trace with hash -910941086, now seen corresponding path program 1 times [2024-11-06 18:56:16,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:16,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457107674] [2024-11-06 18:56:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:16,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:17,739 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 18:56:17,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:17,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457107674] [2024-11-06 18:56:17,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457107674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:17,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:56:17,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:56:17,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70204301] [2024-11-06 18:56:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:17,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:17,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:56:17,776 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 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 18:56:18,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:18,944 INFO L93 Difference]: Finished difference Result 810 states and 1445 transitions. [2024-11-06 18:56:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:18,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 200 [2024-11-06 18:56:18,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:18,963 INFO L225 Difference]: With dead ends: 810 [2024-11-06 18:56:18,963 INFO L226 Difference]: Without dead ends: 444 [2024-11-06 18:56:18,969 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 18:56:18,973 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 54 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:18,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 231 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-06 18:56:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-06 18:56:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-11-06 18:56:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.4288939051918736) internal successors, (633), 443 states have internal predecessors, (633), 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 18:56:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 633 transitions. [2024-11-06 18:56:19,041 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 633 transitions. Word has length 200 [2024-11-06 18:56:19,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:19,042 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 633 transitions. [2024-11-06 18:56:19,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 18:56:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 633 transitions. [2024-11-06 18:56:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-06 18:56:19,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:19,046 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, 1, 1] [2024-11-06 18:56:19,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:56:19,047 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:19,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1872130817, now seen corresponding path program 1 times [2024-11-06 18:56:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:19,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735536745] [2024-11-06 18:56:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:19,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:19,306 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 18:56:19,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:19,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735536745] [2024-11-06 18:56:19,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735536745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:19,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:56:19,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:56:19,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087600091] [2024-11-06 18:56:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:19,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:19,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:19,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:56:19,310 INFO L87 Difference]: Start difference. First operand 444 states and 633 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 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 18:56:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:20,235 INFO L93 Difference]: Finished difference Result 1312 states and 1878 transitions. [2024-11-06 18:56:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:20,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 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 208 [2024-11-06 18:56:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:20,243 INFO L225 Difference]: With dead ends: 1312 [2024-11-06 18:56:20,243 INFO L226 Difference]: Without dead ends: 870 [2024-11-06 18:56:20,244 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 18:56:20,246 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:20,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 18:56:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-06 18:56:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 856. [2024-11-06 18:56:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3953216374269006) internal successors, (1193), 855 states have internal predecessors, (1193), 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 18:56:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1193 transitions. [2024-11-06 18:56:20,299 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1193 transitions. Word has length 208 [2024-11-06 18:56:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:20,300 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1193 transitions. [2024-11-06 18:56:20,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 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 18:56:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1193 transitions. [2024-11-06 18:56:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-06 18:56:20,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:20,304 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, 1, 1] [2024-11-06 18:56:20,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:56:20,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:20,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1580219308, now seen corresponding path program 1 times [2024-11-06 18:56:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049765371] [2024-11-06 18:56:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:20,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:21,129 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 18:56:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:21,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049765371] [2024-11-06 18:56:21,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049765371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:21,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:56:21,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:56:21,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601738797] [2024-11-06 18:56:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:21,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:56:21,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:56:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:56:21,135 INFO L87 Difference]: Start difference. First operand 856 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 18:56:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:22,158 INFO L93 Difference]: Finished difference Result 1864 states and 2652 transitions. [2024-11-06 18:56:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:56:22,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 215 [2024-11-06 18:56:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:22,163 INFO L225 Difference]: With dead ends: 1864 [2024-11-06 18:56:22,163 INFO L226 Difference]: Without dead ends: 836 [2024-11-06 18:56:22,165 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 18:56:22,165 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 330 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:22,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 47 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-06 18:56:22,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-06 18:56:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 836. [2024-11-06 18:56:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.2658682634730538) internal successors, (1057), 835 states have internal predecessors, (1057), 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 18:56:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1057 transitions. [2024-11-06 18:56:22,198 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1057 transitions. Word has length 215 [2024-11-06 18:56:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:22,198 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1057 transitions. [2024-11-06 18:56:22,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 18:56:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1057 transitions. [2024-11-06 18:56:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-06 18:56:22,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:22,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:22,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 18:56:22,217 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:22,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash -762822200, now seen corresponding path program 1 times [2024-11-06 18:56:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:22,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568021507] [2024-11-06 18:56:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:22,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:56:22,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568021507] [2024-11-06 18:56:22,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568021507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:22,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:56:22,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:56:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84946576] [2024-11-06 18:56:22,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:22,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:22,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:22,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:22,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:56:22,502 INFO L87 Difference]: Start difference. First operand 836 states and 1057 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 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 18:56:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:23,204 INFO L93 Difference]: Finished difference Result 2089 states and 2637 transitions. [2024-11-06 18:56:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:23,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 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 228 [2024-11-06 18:56:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:23,210 INFO L225 Difference]: With dead ends: 2089 [2024-11-06 18:56:23,210 INFO L226 Difference]: Without dead ends: 1255 [2024-11-06 18:56:23,211 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 18:56:23,212 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:23,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 57 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:56:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-06 18:56:23,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1252. [2024-11-06 18:56:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.258193445243805) internal successors, (1574), 1251 states have internal predecessors, (1574), 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 18:56:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1574 transitions. [2024-11-06 18:56:23,261 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1574 transitions. Word has length 228 [2024-11-06 18:56:23,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:23,261 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1574 transitions. [2024-11-06 18:56:23,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 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 18:56:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1574 transitions. [2024-11-06 18:56:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-06 18:56:23,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:23,267 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, 1, 1] [2024-11-06 18:56:23,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 18:56:23,267 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:23,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:23,268 INFO L85 PathProgramCache]: Analyzing trace with hash 966647857, now seen corresponding path program 1 times [2024-11-06 18:56:23,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:23,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217921293] [2024-11-06 18:56:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:23,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:23,903 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 18:56:23,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:23,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217921293] [2024-11-06 18:56:23,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217921293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:23,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:56:23,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:56:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388038389] [2024-11-06 18:56:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:23,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:56:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:56:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:56:23,905 INFO L87 Difference]: Start difference. First operand 1252 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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 18:56:25,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:25,113 INFO L93 Difference]: Finished difference Result 3675 states and 4685 transitions. [2024-11-06 18:56:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:56:25,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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 18:56:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:25,123 INFO L225 Difference]: With dead ends: 3675 [2024-11-06 18:56:25,123 INFO L226 Difference]: Without dead ends: 2077 [2024-11-06 18:56:25,126 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 18:56:25,126 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 193 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:25,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 149 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-06 18:56:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-11-06 18:56:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2076. [2024-11-06 18:56:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2075 states have (on average 1.2448192771084337) internal successors, (2583), 2075 states have internal predecessors, (2583), 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 18:56:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2583 transitions. [2024-11-06 18:56:25,193 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2583 transitions. Word has length 231 [2024-11-06 18:56:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:25,194 INFO L471 AbstractCegarLoop]: Abstraction has 2076 states and 2583 transitions. [2024-11-06 18:56:25,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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 18:56:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2583 transitions. [2024-11-06 18:56:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-06 18:56:25,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:25,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:25,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 18:56:25,201 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:25,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:25,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1687815923, now seen corresponding path program 1 times [2024-11-06 18:56:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:25,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052748485] [2024-11-06 18:56:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:25,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:56:25,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:25,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052748485] [2024-11-06 18:56:25,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052748485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:25,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823841679] [2024-11-06 18:56:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:25,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:25,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:25,531 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 18:56:25,533 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 18:56:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:25,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:56:25,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 18:56:26,029 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:26,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823841679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:26,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:26,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-06 18:56:26,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610543755] [2024-11-06 18:56:26,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:26,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:26,034 INFO L87 Difference]: Start difference. First operand 2076 states and 2583 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 18:56:26,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:26,756 INFO L93 Difference]: Finished difference Result 6208 states and 7729 transitions. [2024-11-06 18:56:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:26,756 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 235 [2024-11-06 18:56:26,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:26,772 INFO L225 Difference]: With dead ends: 6208 [2024-11-06 18:56:26,772 INFO L226 Difference]: Without dead ends: 4134 [2024-11-06 18:56:26,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 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 18:56:26,778 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 55 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:26,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 79 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:56:26,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2024-11-06 18:56:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 4126. [2024-11-06 18:56:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4125 states have (on average 1.213818181818182) internal successors, (5007), 4125 states have internal predecessors, (5007), 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 18:56:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5007 transitions. [2024-11-06 18:56:26,860 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5007 transitions. Word has length 235 [2024-11-06 18:56:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:26,860 INFO L471 AbstractCegarLoop]: Abstraction has 4126 states and 5007 transitions. [2024-11-06 18:56:26,861 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 18:56:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5007 transitions. [2024-11-06 18:56:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-06 18:56:26,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:26,887 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, 1, 1] [2024-11-06 18:56:26,907 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 18:56:27,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:27,088 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:27,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2072872742, now seen corresponding path program 1 times [2024-11-06 18:56:27,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:27,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325101419] [2024-11-06 18:56:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:27,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:27,492 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 18:56:27,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:27,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325101419] [2024-11-06 18:56:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325101419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:27,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977657890] [2024-11-06 18:56:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:27,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:27,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:27,496 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 18:56:27,498 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 18:56:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:27,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:56:27,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:27,957 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 18:56:27,958 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977657890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:27,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:27,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094147645] [2024-11-06 18:56:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:27,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:27,960 INFO L87 Difference]: Start difference. First operand 4126 states and 5007 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) 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 18:56:28,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:28,637 INFO L93 Difference]: Finished difference Result 8258 states and 10027 transitions. [2024-11-06 18:56:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:28,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) 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 238 [2024-11-06 18:56:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:28,651 INFO L225 Difference]: With dead ends: 8258 [2024-11-06 18:56:28,651 INFO L226 Difference]: Without dead ends: 4134 [2024-11-06 18:56:28,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 237 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 18:56:28,656 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 24 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:28,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 319 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:56:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2024-11-06 18:56:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 4126. [2024-11-06 18:56:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4125 states have (on average 1.2041212121212121) internal successors, (4967), 4125 states have internal predecessors, (4967), 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 18:56:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 4967 transitions. [2024-11-06 18:56:28,729 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 4967 transitions. Word has length 238 [2024-11-06 18:56:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:28,729 INFO L471 AbstractCegarLoop]: Abstraction has 4126 states and 4967 transitions. [2024-11-06 18:56:28,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) 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 18:56:28,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 4967 transitions. [2024-11-06 18:56:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-06 18:56:28,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:28,754 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, 1, 1] [2024-11-06 18:56:28,772 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 18:56:28,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:28,956 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:28,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:28,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1194323574, now seen corresponding path program 1 times [2024-11-06 18:56:28,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:28,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322205951] [2024-11-06 18:56:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:28,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:29,343 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 18:56:29,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322205951] [2024-11-06 18:56:29,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322205951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421269457] [2024-11-06 18:56:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:29,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:29,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:29,347 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 18:56:29,349 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 18:56:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:29,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:56:29,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:29,528 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 18:56:29,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:29,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421269457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:29,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:29,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609724980] [2024-11-06 18:56:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:29,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:29,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:29,531 INFO L87 Difference]: Start difference. First operand 4126 states and 4967 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:56:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:30,211 INFO L93 Difference]: Finished difference Result 10284 states and 12629 transitions. [2024-11-06 18:56:30,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:30,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2024-11-06 18:56:30,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:30,228 INFO L225 Difference]: With dead ends: 10284 [2024-11-06 18:56:30,228 INFO L226 Difference]: Without dead ends: 6160 [2024-11-06 18:56:30,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 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 18:56:30,236 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 213 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:30,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 337 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:56:30,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2024-11-06 18:56:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 6156. [2024-11-06 18:56:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 6155 states have (on average 1.1626320064987814) internal successors, (7156), 6155 states have internal predecessors, (7156), 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 18:56:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 7156 transitions. [2024-11-06 18:56:30,340 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 7156 transitions. Word has length 244 [2024-11-06 18:56:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:30,340 INFO L471 AbstractCegarLoop]: Abstraction has 6156 states and 7156 transitions. [2024-11-06 18:56:30,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:56:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 7156 transitions. [2024-11-06 18:56:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-06 18:56:30,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:30,351 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1] [2024-11-06 18:56:30,369 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 18:56:30,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:30,553 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:30,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1060727181, now seen corresponding path program 1 times [2024-11-06 18:56:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:30,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662399361] [2024-11-06 18:56:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 18:56:30,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:30,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662399361] [2024-11-06 18:56:30,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662399361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:30,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223293639] [2024-11-06 18:56:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:30,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:30,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:30,852 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 18:56:30,854 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 18:56:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:31,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:56:31,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:56:31,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:31,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223293639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:31,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:31,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:31,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943940531] [2024-11-06 18:56:31,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:31,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:31,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:31,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:31,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:31,255 INFO L87 Difference]: Start difference. First operand 6156 states and 7156 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 18:56:31,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:31,832 INFO L93 Difference]: Finished difference Result 18427 states and 21411 transitions. [2024-11-06 18:56:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:31,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 245 [2024-11-06 18:56:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:31,859 INFO L225 Difference]: With dead ends: 18427 [2024-11-06 18:56:31,859 INFO L226 Difference]: Without dead ends: 12273 [2024-11-06 18:56:31,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 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 18:56:31,868 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 42 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:31,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 129 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:56:31,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12273 states. [2024-11-06 18:56:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12273 to 12269. [2024-11-06 18:56:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12269 states, 12268 states have (on average 1.1416693837626346) internal successors, (14006), 12268 states have internal predecessors, (14006), 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 18:56:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12269 states to 12269 states and 14006 transitions. [2024-11-06 18:56:32,056 INFO L78 Accepts]: Start accepts. Automaton has 12269 states and 14006 transitions. Word has length 245 [2024-11-06 18:56:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:32,057 INFO L471 AbstractCegarLoop]: Abstraction has 12269 states and 14006 transitions. [2024-11-06 18:56:32,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 18:56:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 12269 states and 14006 transitions. [2024-11-06 18:56:32,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-06 18:56:32,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:32,080 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, 1, 1] [2024-11-06 18:56:32,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 18:56:32,280 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,SelfDestructingSolverStorable8 [2024-11-06 18:56:32,281 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:32,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash -343566708, now seen corresponding path program 1 times [2024-11-06 18:56:32,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:32,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411389594] [2024-11-06 18:56:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:32,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:32,682 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 18:56:32,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:32,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411389594] [2024-11-06 18:56:32,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411389594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338033341] [2024-11-06 18:56:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:32,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:32,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:32,685 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 18:56:32,687 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 18:56:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:32,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:56:32,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:32,879 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 18:56:32,879 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:32,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338033341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:32,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:32,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:32,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197143599] [2024-11-06 18:56:32,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:32,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:32,883 INFO L87 Difference]: Start difference. First operand 12269 states and 14006 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 18:56:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:33,429 INFO L93 Difference]: Finished difference Result 24535 states and 28009 transitions. [2024-11-06 18:56:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:33,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 266 [2024-11-06 18:56:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:33,452 INFO L225 Difference]: With dead ends: 24535 [2024-11-06 18:56:33,453 INFO L226 Difference]: Without dead ends: 12268 [2024-11-06 18:56:33,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 265 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 18:56:33,462 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 213 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:33,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 292 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:56:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12268 states. [2024-11-06 18:56:33,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12268 to 12061. [2024-11-06 18:56:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12061 states, 12060 states have (on average 1.106301824212272) internal successors, (13342), 12060 states have internal predecessors, (13342), 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 18:56:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12061 states to 12061 states and 13342 transitions. [2024-11-06 18:56:33,608 INFO L78 Accepts]: Start accepts. Automaton has 12061 states and 13342 transitions. Word has length 266 [2024-11-06 18:56:33,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:33,608 INFO L471 AbstractCegarLoop]: Abstraction has 12061 states and 13342 transitions. [2024-11-06 18:56:33,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 18:56:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 12061 states and 13342 transitions. [2024-11-06 18:56:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-06 18:56:33,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:33,629 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, 1, 1] [2024-11-06 18:56:33,646 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 18:56:33,829 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,SelfDestructingSolverStorable9 [2024-11-06 18:56:33,830 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:33,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash 489688911, now seen corresponding path program 1 times [2024-11-06 18:56:33,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:33,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035323925] [2024-11-06 18:56:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:33,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:34,059 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 18:56:34,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:34,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035323925] [2024-11-06 18:56:34,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035323925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:34,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:56:34,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:56:34,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67897543] [2024-11-06 18:56:34,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:34,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:56:34,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:56:34,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:56:34,063 INFO L87 Difference]: Start difference. First operand 12061 states and 13342 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:56:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:34,804 INFO L93 Difference]: Finished difference Result 44470 states and 49057 transitions. [2024-11-06 18:56:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:56:34,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2024-11-06 18:56:34,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:34,873 INFO L225 Difference]: With dead ends: 44470 [2024-11-06 18:56:34,873 INFO L226 Difference]: Without dead ends: 32411 [2024-11-06 18:56:34,895 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 18:56:34,897 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 481 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:34,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 298 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:56:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32411 states. [2024-11-06 18:56:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32411 to 31798. [2024-11-06 18:56:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31798 states, 31797 states have (on average 1.0978394188130955) internal successors, (34908), 31797 states have internal predecessors, (34908), 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 18:56:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31798 states to 31798 states and 34908 transitions. [2024-11-06 18:56:35,376 INFO L78 Accepts]: Start accepts. Automaton has 31798 states and 34908 transitions. Word has length 272 [2024-11-06 18:56:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:35,376 INFO L471 AbstractCegarLoop]: Abstraction has 31798 states and 34908 transitions. [2024-11-06 18:56:35,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:56:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 31798 states and 34908 transitions. [2024-11-06 18:56:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-06 18:56:35,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:35,403 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 18:56:35,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 18:56:35,404 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:35,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash -141596557, now seen corresponding path program 2 times [2024-11-06 18:56:35,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258623941] [2024-11-06 18:56:35,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:35,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 84 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-06 18:56:35,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258623941] [2024-11-06 18:56:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258623941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654618255] [2024-11-06 18:56:35,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:56:35,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:35,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:35,815 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 18:56:35,817 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 18:56:35,998 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:56:35,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:56:36,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:56:36,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-06 18:56:36,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:56:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-06 18:56:36,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654618255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:56:36,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:56:36,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-06 18:56:36,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951517629] [2024-11-06 18:56:36,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:56:36,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 18:56:36,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:36,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 18:56:36,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:56:36,600 INFO L87 Difference]: Start difference. First operand 31798 states and 34908 transitions. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 5 states have internal predecessors, (468), 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 18:56:39,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:39,195 INFO L93 Difference]: Finished difference Result 168498 states and 184963 transitions. [2024-11-06 18:56:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 18:56:39,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 5 states have internal predecessors, (468), 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 18:56:39,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:39,461 INFO L225 Difference]: With dead ends: 168498 [2024-11-06 18:56:39,462 INFO L226 Difference]: Without dead ends: 136701 [2024-11-06 18:56:39,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:56:39,496 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 1731 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:39,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 351 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 18:56:39,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136701 states. [2024-11-06 18:56:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136701 to 114741. [2024-11-06 18:56:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114741 states, 114740 states have (on average 1.0795973505316367) internal successors, (123873), 114740 states have internal predecessors, (123873), 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 18:56:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114741 states to 114741 states and 123873 transitions. [2024-11-06 18:56:41,217 INFO L78 Accepts]: Start accepts. Automaton has 114741 states and 123873 transitions. Word has length 273 [2024-11-06 18:56:41,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:41,218 INFO L471 AbstractCegarLoop]: Abstraction has 114741 states and 123873 transitions. [2024-11-06 18:56:41,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 5 states have internal predecessors, (468), 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 18:56:41,218 INFO L276 IsEmpty]: Start isEmpty. Operand 114741 states and 123873 transitions. [2024-11-06 18:56:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-06 18:56:41,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:41,257 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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] [2024-11-06 18:56:41,273 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 18:56:41,457 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,SelfDestructingSolverStorable11 [2024-11-06 18:56:41,457 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:41,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash -929123789, now seen corresponding path program 1 times [2024-11-06 18:56:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:41,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803863356] [2024-11-06 18:56:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-06 18:56:41,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:41,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803863356] [2024-11-06 18:56:41,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803863356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:41,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708895622] [2024-11-06 18:56:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:41,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:41,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:41,937 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 18:56:41,941 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 18:56:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:42,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:56:42,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:56:42,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:42,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708895622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:42,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:42,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:42,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756123085] [2024-11-06 18:56:42,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:42,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:56:42,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:42,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:56:42,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:56:42,364 INFO L87 Difference]: Start difference. First operand 114741 states and 123873 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 18:56:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:43,396 INFO L93 Difference]: Finished difference Result 317701 states and 342307 transitions. [2024-11-06 18:56:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:56:43,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 299 [2024-11-06 18:56:43,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:43,722 INFO L225 Difference]: With dead ends: 317701 [2024-11-06 18:56:43,723 INFO L226 Difference]: Without dead ends: 202962 [2024-11-06 18:56:43,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 298 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 18:56:43,786 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 231 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:43,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 797 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:56:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202962 states. [2024-11-06 18:56:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202962 to 199495. [2024-11-06 18:56:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199495 states, 199494 states have (on average 1.0687238713946283) internal successors, (213204), 199494 states have internal predecessors, (213204), 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 18:56:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199495 states to 199495 states and 213204 transitions. [2024-11-06 18:56:47,304 INFO L78 Accepts]: Start accepts. Automaton has 199495 states and 213204 transitions. Word has length 299 [2024-11-06 18:56:47,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:47,304 INFO L471 AbstractCegarLoop]: Abstraction has 199495 states and 213204 transitions. [2024-11-06 18:56:47,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 18:56:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 199495 states and 213204 transitions. [2024-11-06 18:56:47,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-06 18:56:47,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:47,337 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 18:56:47,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 18:56:47,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:47,538 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:47,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:47,539 INFO L85 PathProgramCache]: Analyzing trace with hash 978689560, now seen corresponding path program 1 times [2024-11-06 18:56:47,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:47,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534132163] [2024-11-06 18:56:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:47,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-06 18:56:48,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534132163] [2024-11-06 18:56:48,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534132163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:56:48,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368903775] [2024-11-06 18:56:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:48,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:48,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:56:48,046 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 18:56:48,048 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 18:56:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:48,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:56:48,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:56:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-06 18:56:48,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:56:48,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368903775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:48,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:56:48,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-06 18:56:48,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033985667] [2024-11-06 18:56:48,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:48,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:56:48,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:56:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:56:48,365 INFO L87 Difference]: Start difference. First operand 199495 states and 213204 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 18:56:50,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:50,686 INFO L93 Difference]: Finished difference Result 506770 states and 541714 transitions. [2024-11-06 18:56:50,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:56:50,687 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 301 [2024-11-06 18:56:50,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:51,089 INFO L225 Difference]: With dead ends: 506770 [2024-11-06 18:56:51,090 INFO L226 Difference]: Without dead ends: 307277 [2024-11-06 18:56:51,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:56:51,454 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 463 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:51,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 448 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:56:51,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307277 states. [2024-11-06 18:56:54,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307277 to 295659. [2024-11-06 18:56:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295659 states, 295658 states have (on average 1.0698171536031496) internal successors, (316300), 295658 states have internal predecessors, (316300), 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 18:56:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295659 states to 295659 states and 316300 transitions. [2024-11-06 18:56:55,970 INFO L78 Accepts]: Start accepts. Automaton has 295659 states and 316300 transitions. Word has length 301 [2024-11-06 18:56:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:56:55,970 INFO L471 AbstractCegarLoop]: Abstraction has 295659 states and 316300 transitions. [2024-11-06 18:56:55,970 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 18:56:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 295659 states and 316300 transitions. [2024-11-06 18:56:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-06 18:56:56,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:56:56,014 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:56,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 18:56:56,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:56:56,215 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:56:56,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:56:56,216 INFO L85 PathProgramCache]: Analyzing trace with hash 104267680, now seen corresponding path program 1 times [2024-11-06 18:56:56,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:56:56,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258259254] [2024-11-06 18:56:56,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:56:56,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:56:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:56:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:56:56,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:56:56,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258259254] [2024-11-06 18:56:56,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258259254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:56:56,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:56:56,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:56:56,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962797387] [2024-11-06 18:56:56,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:56:56,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:56:56,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:56:56,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:56:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:56:56,537 INFO L87 Difference]: Start difference. First operand 295659 states and 316300 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 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 18:56:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:56:58,879 INFO L93 Difference]: Finished difference Result 641827 states and 686326 transitions. [2024-11-06 18:56:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:56:58,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 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 314 [2024-11-06 18:56:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:56:59,769 INFO L225 Difference]: With dead ends: 641827 [2024-11-06 18:56:59,770 INFO L226 Difference]: Without dead ends: 346170 [2024-11-06 18:56:59,851 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 18:56:59,851 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 430 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:56:59,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 442 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:57:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346170 states. [2024-11-06 18:57:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346170 to 332348. [2024-11-06 18:57:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332348 states, 332347 states have (on average 1.0703030266558746) internal successors, (355712), 332347 states have internal predecessors, (355712), 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 18:57:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332348 states to 332348 states and 355712 transitions. [2024-11-06 18:57:05,180 INFO L78 Accepts]: Start accepts. Automaton has 332348 states and 355712 transitions. Word has length 314 [2024-11-06 18:57:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:57:05,181 INFO L471 AbstractCegarLoop]: Abstraction has 332348 states and 355712 transitions. [2024-11-06 18:57:05,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 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 18:57:05,181 INFO L276 IsEmpty]: Start isEmpty. Operand 332348 states and 355712 transitions. [2024-11-06 18:57:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-06 18:57:05,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:57:05,208 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-06 18:57:05,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 18:57:05,208 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:57:05,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:57:05,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2042610103, now seen corresponding path program 1 times [2024-11-06 18:57:05,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:57:05,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143144742] [2024-11-06 18:57:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:57:05,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:57:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:57:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-06 18:57:05,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:57:05,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143144742] [2024-11-06 18:57:05,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143144742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:57:05,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:57:05,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:57:05,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121017341] [2024-11-06 18:57:05,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:57:05,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:57:05,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:57:05,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:57:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:57:05,419 INFO L87 Difference]: Start difference. First operand 332348 states and 355712 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 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 18:57:08,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:57:08,195 INFO L93 Difference]: Finished difference Result 777992 states and 833326 transitions. [2024-11-06 18:57:08,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:57:08,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 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 338 [2024-11-06 18:57:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:57:08,915 INFO L225 Difference]: With dead ends: 777992 [2024-11-06 18:57:08,915 INFO L226 Difference]: Without dead ends: 445646 [2024-11-06 18:57:09,117 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 18:57:09,117 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 154 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:57:09,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 133 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:57:09,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445646 states. [2024-11-06 18:57:14,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445646 to 374377. [2024-11-06 18:57:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374377 states, 374376 states have (on average 1.0716445498643075) internal successors, (401198), 374376 states have internal predecessors, (401198), 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)