./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/eca-rers2012/Problem13_label23.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', 'adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label23.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 adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 19:48:13,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 19:48:13,324 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 19:48:13,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 19:48:13,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 19:48:13,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 19:48:13,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 19:48:13,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 19:48:13,351 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 19:48:13,351 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 19:48:13,351 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 19:48:13,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 19:48:13,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 19:48:13,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 19:48:13,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 19:48:13,352 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 19:48:13,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:48:13,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 19:48:13,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 19:48:13,353 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 19:48:13,353 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 19:48:13,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 19:48:13,353 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 19:48:13,353 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 19:48:13,353 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 19:48:13,353 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 19:48:13,355 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 -> adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e [2024-11-06 19:48:13,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 19:48:13,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 19:48:13,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 19:48:13,575 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 19:48:13,575 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 19:48:13,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2024-11-06 19:48:14,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 19:48:15,103 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 19:48:15,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2024-11-06 19:48:15,136 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd603f28f/927ea94c3fa1435cae2595de26689059/FLAG9f2b062a2 [2024-11-06 19:48:15,224 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd603f28f/927ea94c3fa1435cae2595de26689059 [2024-11-06 19:48:15,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 19:48:15,226 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 19:48:15,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 19:48:15,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 19:48:15,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 19:48:15,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:48:15" (1/1) ... [2024-11-06 19:48:15,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750975dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:15, skipping insertion in model container [2024-11-06 19:48:15,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:48:15" (1/1) ... [2024-11-06 19:48:15,317 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 19:48:15,462 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2024-11-06 19:48:15,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:48:15,958 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 19:48:15,965 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2024-11-06 19:48:16,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 19:48:16,300 INFO L204 MainTranslator]: Completed translation [2024-11-06 19:48:16,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16 WrapperNode [2024-11-06 19:48:16,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 19:48:16,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 19:48:16,302 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 19:48:16,302 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 19:48:16,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:16,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:16,764 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-06 19:48:16,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 19:48:16,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 19:48:16,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 19:48:16,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 19:48:16,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:16,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:16,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:17,089 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 19:48:17,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:17,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:17,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:17,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:17,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:17,302 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:17,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 19:48:17,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 19:48:17,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 19:48:17,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 19:48:17,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (1/1) ... [2024-11-06 19:48:17,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 19:48:17,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:48:17,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 19:48:17,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 19:48:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 19:48:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 19:48:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 19:48:17,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 19:48:17,489 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 19:48:17,490 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 19:48:21,455 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-06 19:48:21,455 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 19:48:21,485 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 19:48:21,487 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 19:48:21,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:48:21 BoogieIcfgContainer [2024-11-06 19:48:21,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 19:48:21,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 19:48:21,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 19:48:21,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 19:48:21,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:48:15" (1/3) ... [2024-11-06 19:48:21,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e58149a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:48:21, skipping insertion in model container [2024-11-06 19:48:21,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:48:16" (2/3) ... [2024-11-06 19:48:21,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e58149a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:48:21, skipping insertion in model container [2024-11-06 19:48:21,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:48:21" (3/3) ... [2024-11-06 19:48:21,495 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2024-11-06 19:48:21,505 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 19:48:21,505 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 19:48:21,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 19:48:21,619 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;@6a2d430c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 19:48:21,619 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 19:48:21,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-06 19:48:21,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:21,628 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:21,628 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:21,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:21,631 INFO L85 PathProgramCache]: Analyzing trace with hash -461255479, now seen corresponding path program 1 times [2024-11-06 19:48:21,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:21,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378820024] [2024-11-06 19:48:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:21,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:21,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378820024] [2024-11-06 19:48:21,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378820024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:21,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:21,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:21,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472357045] [2024-11-06 19:48:21,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:21,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:21,819 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:25,389 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2024-11-06 19:48:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:25,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-06 19:48:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:25,411 INFO L225 Difference]: With dead ends: 3160 [2024-11-06 19:48:25,413 INFO L226 Difference]: Without dead ends: 1983 [2024-11-06 19:48:25,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:25,422 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 1090 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:25,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-06 19:48:25,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2024-11-06 19:48:25,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2024-11-06 19:48:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2024-11-06 19:48:25,505 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 13 [2024-11-06 19:48:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:25,505 INFO L471 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2024-11-06 19:48:25,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2024-11-06 19:48:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-06 19:48:25,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:25,507 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-06 19:48:25,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 19:48:25,508 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:25,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:25,509 INFO L85 PathProgramCache]: Analyzing trace with hash 365234242, now seen corresponding path program 1 times [2024-11-06 19:48:25,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:25,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820743252] [2024-11-06 19:48:25,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:25,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:25,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:25,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820743252] [2024-11-06 19:48:25,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820743252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:25,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:25,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:25,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218408400] [2024-11-06 19:48:25,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:25,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:25,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:25,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:25,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:25,734 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:28,423 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2024-11-06 19:48:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:28,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-11-06 19:48:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:28,434 INFO L225 Difference]: With dead ends: 5456 [2024-11-06 19:48:28,434 INFO L226 Difference]: Without dead ends: 3528 [2024-11-06 19:48:28,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:28,437 INFO L432 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:28,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:48:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2024-11-06 19:48:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2024-11-06 19:48:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2024-11-06 19:48:28,499 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 78 [2024-11-06 19:48:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:28,500 INFO L471 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2024-11-06 19:48:28,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2024-11-06 19:48:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-06 19:48:28,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:28,501 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-06 19:48:28,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 19:48:28,502 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:28,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1133112465, now seen corresponding path program 1 times [2024-11-06 19:48:28,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:28,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003259590] [2024-11-06 19:48:28,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:28,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:28,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:28,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003259590] [2024-11-06 19:48:28,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003259590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:28,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:28,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017945724] [2024-11-06 19:48:28,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:28,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:28,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:28,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:28,621 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:31,064 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2024-11-06 19:48:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:31,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2024-11-06 19:48:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:31,086 INFO L225 Difference]: With dead ends: 10232 [2024-11-06 19:48:31,086 INFO L226 Difference]: Without dead ends: 6708 [2024-11-06 19:48:31,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:31,093 INFO L432 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:31,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 19:48:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2024-11-06 19:48:31,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2024-11-06 19:48:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2024-11-06 19:48:31,176 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 84 [2024-11-06 19:48:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:31,178 INFO L471 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2024-11-06 19:48:31,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:31,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2024-11-06 19:48:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-06 19:48:31,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:31,181 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-06 19:48:31,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 19:48:31,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:31,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash 659309084, now seen corresponding path program 1 times [2024-11-06 19:48:31,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:31,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796540066] [2024-11-06 19:48:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:31,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:31,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796540066] [2024-11-06 19:48:31,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796540066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:31,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:31,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:31,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887227184] [2024-11-06 19:48:31,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:31,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:31,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:31,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:31,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:31,357 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:34,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:34,062 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2024-11-06 19:48:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:34,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-11-06 19:48:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:34,088 INFO L225 Difference]: With dead ends: 17443 [2024-11-06 19:48:34,088 INFO L226 Difference]: Without dead ends: 10745 [2024-11-06 19:48:34,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:34,097 INFO L432 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:34,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:48:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2024-11-06 19:48:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2024-11-06 19:48:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2024-11-06 19:48:34,259 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 114 [2024-11-06 19:48:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:34,260 INFO L471 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2024-11-06 19:48:34,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:34,260 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2024-11-06 19:48:34,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-06 19:48:34,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:34,264 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:34,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 19:48:34,265 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:34,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash -606577547, now seen corresponding path program 1 times [2024-11-06 19:48:34,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:34,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163307867] [2024-11-06 19:48:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:34,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:34,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:34,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163307867] [2024-11-06 19:48:34,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163307867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:34,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:34,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:48:34,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694413833] [2024-11-06 19:48:34,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:34,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:34,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:34,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:34,387 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:36,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:36,782 INFO L93 Difference]: Finished difference Result 30031 states and 41242 transitions. [2024-11-06 19:48:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-11-06 19:48:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:36,814 INFO L225 Difference]: With dead ends: 30031 [2024-11-06 19:48:36,814 INFO L226 Difference]: Without dead ends: 20151 [2024-11-06 19:48:36,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:36,822 INFO L432 NwaCegarLoop]: 1010 mSDtfsCounter, 853 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:36,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1160 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 19:48:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2024-11-06 19:48:36,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 18550. [2024-11-06 19:48:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18550 states, 18549 states have (on average 1.252466440239366) internal successors, (23232), 18549 states have internal predecessors, (23232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18550 states to 18550 states and 23232 transitions. [2024-11-06 19:48:37,003 INFO L78 Accepts]: Start accepts. Automaton has 18550 states and 23232 transitions. Word has length 124 [2024-11-06 19:48:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:37,003 INFO L471 AbstractCegarLoop]: Abstraction has 18550 states and 23232 transitions. [2024-11-06 19:48:37,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 18550 states and 23232 transitions. [2024-11-06 19:48:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-06 19:48:37,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:37,004 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-06 19:48:37,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 19:48:37,005 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:37,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash 889611492, now seen corresponding path program 1 times [2024-11-06 19:48:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:37,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489501459] [2024-11-06 19:48:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:37,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489501459] [2024-11-06 19:48:37,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489501459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:37,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:37,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:37,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743076389] [2024-11-06 19:48:37,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:37,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:37,214 INFO L87 Difference]: Start difference. First operand 18550 states and 23232 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:39,756 INFO L93 Difference]: Finished difference Result 44989 states and 55638 transitions. [2024-11-06 19:48:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:39,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2024-11-06 19:48:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:39,794 INFO L225 Difference]: With dead ends: 44989 [2024-11-06 19:48:39,794 INFO L226 Difference]: Without dead ends: 26441 [2024-11-06 19:48:39,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:39,804 INFO L432 NwaCegarLoop]: 1030 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:39,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1214 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 19:48:39,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26441 states. [2024-11-06 19:48:39,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26441 to 26434. [2024-11-06 19:48:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26434 states, 26433 states have (on average 1.2007717625695153) internal successors, (31740), 26433 states have internal predecessors, (31740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26434 states to 26434 states and 31740 transitions. [2024-11-06 19:48:40,015 INFO L78 Accepts]: Start accepts. Automaton has 26434 states and 31740 transitions. Word has length 129 [2024-11-06 19:48:40,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:40,016 INFO L471 AbstractCegarLoop]: Abstraction has 26434 states and 31740 transitions. [2024-11-06 19:48:40,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:40,016 INFO L276 IsEmpty]: Start isEmpty. Operand 26434 states and 31740 transitions. [2024-11-06 19:48:40,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-06 19:48:40,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:40,018 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:40,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 19:48:40,019 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:40,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:40,019 INFO L85 PathProgramCache]: Analyzing trace with hash -836746136, now seen corresponding path program 1 times [2024-11-06 19:48:40,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:40,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602029439] [2024-11-06 19:48:40,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:40,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:40,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:40,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602029439] [2024-11-06 19:48:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602029439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:40,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:40,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:48:40,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220129745] [2024-11-06 19:48:40,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:40,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:40,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:40,151 INFO L87 Difference]: Start difference. First operand 26434 states and 31740 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:42,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:42,809 INFO L93 Difference]: Finished difference Result 72535 states and 87976 transitions. [2024-11-06 19:48:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:42,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-06 19:48:42,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:42,865 INFO L225 Difference]: With dead ends: 72535 [2024-11-06 19:48:42,865 INFO L226 Difference]: Without dead ends: 46103 [2024-11-06 19:48:42,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:42,884 INFO L432 NwaCegarLoop]: 1847 mSDtfsCounter, 840 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:42,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1984 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 19:48:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46103 states. [2024-11-06 19:48:43,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46103 to 42946. [2024-11-06 19:48:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.17205728257073) internal successors, (50334), 42945 states have internal predecessors, (50334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50334 transitions. [2024-11-06 19:48:43,257 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50334 transitions. Word has length 227 [2024-11-06 19:48:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:43,257 INFO L471 AbstractCegarLoop]: Abstraction has 42946 states and 50334 transitions. [2024-11-06 19:48:43,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50334 transitions. [2024-11-06 19:48:43,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-06 19:48:43,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:43,259 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:43,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 19:48:43,260 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:43,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:43,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1380443233, now seen corresponding path program 1 times [2024-11-06 19:48:43,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:43,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559056722] [2024-11-06 19:48:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:43,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-06 19:48:43,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:43,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559056722] [2024-11-06 19:48:43,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559056722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:43,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:43,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:48:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793098891] [2024-11-06 19:48:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:43,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:43,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:43,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:43,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:43,631 INFO L87 Difference]: Start difference. First operand 42946 states and 50334 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:45,776 INFO L93 Difference]: Finished difference Result 85103 states and 99869 transitions. [2024-11-06 19:48:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:45,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2024-11-06 19:48:45,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:45,818 INFO L225 Difference]: With dead ends: 85103 [2024-11-06 19:48:45,818 INFO L226 Difference]: Without dead ends: 42946 [2024-11-06 19:48:45,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:45,842 INFO L432 NwaCegarLoop]: 1064 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:45,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1193 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 19:48:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42946 states. [2024-11-06 19:48:46,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42946 to 42946. [2024-11-06 19:48:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.1719408545814414) internal successors, (50329), 42945 states have internal predecessors, (50329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50329 transitions. [2024-11-06 19:48:46,221 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50329 transitions. Word has length 233 [2024-11-06 19:48:46,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:46,222 INFO L471 AbstractCegarLoop]: Abstraction has 42946 states and 50329 transitions. [2024-11-06 19:48:46,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50329 transitions. [2024-11-06 19:48:46,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-06 19:48:46,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:46,225 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:46,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 19:48:46,225 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:46,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:46,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1208046358, now seen corresponding path program 1 times [2024-11-06 19:48:46,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:46,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937167776] [2024-11-06 19:48:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:46,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 19:48:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:46,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937167776] [2024-11-06 19:48:46,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937167776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:46,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:48:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823654863] [2024-11-06 19:48:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:46,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:46,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:46,469 INFO L87 Difference]: Start difference. First operand 42946 states and 50329 transitions. Second operand has 3 states, 3 states have (on average 80.0) 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 19:48:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:49,424 INFO L93 Difference]: Finished difference Result 104790 states and 124853 transitions. [2024-11-06 19:48:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:49,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) 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 240 [2024-11-06 19:48:49,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:49,488 INFO L225 Difference]: With dead ends: 104790 [2024-11-06 19:48:49,489 INFO L226 Difference]: Without dead ends: 62633 [2024-11-06 19:48:49,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:49,508 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 825 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:49,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 928 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-06 19:48:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62633 states. [2024-11-06 19:48:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62633 to 61048. [2024-11-06 19:48:50,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61048 states, 61047 states have (on average 1.161138139466313) internal successors, (70884), 61047 states have internal predecessors, (70884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61048 states to 61048 states and 70884 transitions. [2024-11-06 19:48:50,147 INFO L78 Accepts]: Start accepts. Automaton has 61048 states and 70884 transitions. Word has length 240 [2024-11-06 19:48:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:50,148 INFO L471 AbstractCegarLoop]: Abstraction has 61048 states and 70884 transitions. [2024-11-06 19:48:50,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) 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 19:48:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 61048 states and 70884 transitions. [2024-11-06 19:48:50,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-06 19:48:50,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:50,150 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:50,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 19:48:50,150 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:50,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1350158918, now seen corresponding path program 1 times [2024-11-06 19:48:50,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:50,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481183413] [2024-11-06 19:48:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:50,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-06 19:48:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:50,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481183413] [2024-11-06 19:48:50,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481183413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:50,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:50,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:48:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712104796] [2024-11-06 19:48:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:50,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:50,302 INFO L87 Difference]: Start difference. First operand 61048 states and 70884 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:53,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:53,131 INFO L93 Difference]: Finished difference Result 133102 states and 156733 transitions. [2024-11-06 19:48:53,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:53,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 254 [2024-11-06 19:48:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:53,209 INFO L225 Difference]: With dead ends: 133102 [2024-11-06 19:48:53,209 INFO L226 Difference]: Without dead ends: 72843 [2024-11-06 19:48:53,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:48:53,259 INFO L432 NwaCegarLoop]: 1453 mSDtfsCounter, 1147 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:53,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1539 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [768 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 19:48:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72843 states. [2024-11-06 19:48:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72843 to 72842. [2024-11-06 19:48:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72842 states, 72841 states have (on average 1.1448360126851636) internal successors, (83391), 72841 states have internal predecessors, (83391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72842 states to 72842 states and 83391 transitions. [2024-11-06 19:48:53,890 INFO L78 Accepts]: Start accepts. Automaton has 72842 states and 83391 transitions. Word has length 254 [2024-11-06 19:48:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:53,891 INFO L471 AbstractCegarLoop]: Abstraction has 72842 states and 83391 transitions. [2024-11-06 19:48:53,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 72842 states and 83391 transitions. [2024-11-06 19:48:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-06 19:48:53,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:53,894 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:53,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 19:48:53,894 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:53,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash 290243953, now seen corresponding path program 1 times [2024-11-06 19:48:53,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:53,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383799038] [2024-11-06 19:48:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:53,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 150 proven. 113 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-06 19:48:55,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:55,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383799038] [2024-11-06 19:48:55,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383799038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:48:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714526539] [2024-11-06 19:48:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:55,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:48:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:48:55,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:48:55,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 19:48:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:55,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:48:55,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:48:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-06 19:48:55,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:48:55,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714526539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:55,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:48:55,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-06 19:48:55,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435358802] [2024-11-06 19:48:55,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:55,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:48:55,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:55,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:48:55,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:48:55,418 INFO L87 Difference]: Start difference. First operand 72842 states and 83391 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:57,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:48:57,904 INFO L93 Difference]: Finished difference Result 144884 states and 165978 transitions. [2024-11-06 19:48:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:48:57,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 319 [2024-11-06 19:48:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:48:57,978 INFO L225 Difference]: With dead ends: 144884 [2024-11-06 19:48:57,979 INFO L226 Difference]: Without dead ends: 72831 [2024-11-06 19:48:58,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:48:58,024 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 1071 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:48:58,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 800 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:48:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72831 states. [2024-11-06 19:48:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72831 to 72828. [2024-11-06 19:48:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72828 states, 72827 states have (on average 1.105853598253395) internal successors, (80536), 72827 states have internal predecessors, (80536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72828 states to 72828 states and 80536 transitions. [2024-11-06 19:48:58,648 INFO L78 Accepts]: Start accepts. Automaton has 72828 states and 80536 transitions. Word has length 319 [2024-11-06 19:48:58,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:48:58,648 INFO L471 AbstractCegarLoop]: Abstraction has 72828 states and 80536 transitions. [2024-11-06 19:48:58,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:48:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 72828 states and 80536 transitions. [2024-11-06 19:48:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-06 19:48:58,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:48:58,651 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:48:58,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 19:48:58,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-06 19:48:58,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:48:58,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:48:58,852 INFO L85 PathProgramCache]: Analyzing trace with hash 448094546, now seen corresponding path program 1 times [2024-11-06 19:48:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:48:58,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803870882] [2024-11-06 19:48:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:48:58,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:48:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:48:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-06 19:48:59,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:48:59,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803870882] [2024-11-06 19:48:59,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803870882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:48:59,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:48:59,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:48:59,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974416208] [2024-11-06 19:48:59,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:48:59,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 19:48:59,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:48:59,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 19:48:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:48:59,008 INFO L87 Difference]: Start difference. First operand 72828 states and 80536 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:03,837 INFO L93 Difference]: Finished difference Result 182817 states and 202181 transitions. [2024-11-06 19:49:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 19:49:03,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2024-11-06 19:49:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:03,946 INFO L225 Difference]: With dead ends: 182817 [2024-11-06 19:49:03,946 INFO L226 Difference]: Without dead ends: 110778 [2024-11-06 19:49:03,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 19:49:03,986 INFO L432 NwaCegarLoop]: 653 mSDtfsCounter, 1687 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 5916 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 6912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 5916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:03,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 837 Invalid, 6912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 5916 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-06 19:49:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110778 states. [2024-11-06 19:49:04,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110778 to 88580. [2024-11-06 19:49:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88580 states, 88579 states have (on average 1.0960046963727295) internal successors, (97083), 88579 states have internal predecessors, (97083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88580 states to 88580 states and 97083 transitions. [2024-11-06 19:49:04,915 INFO L78 Accepts]: Start accepts. Automaton has 88580 states and 97083 transitions. Word has length 361 [2024-11-06 19:49:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:04,915 INFO L471 AbstractCegarLoop]: Abstraction has 88580 states and 97083 transitions. [2024-11-06 19:49:04,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 88580 states and 97083 transitions. [2024-11-06 19:49:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-06 19:49:04,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:04,922 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:04,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 19:49:04,922 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:04,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:04,922 INFO L85 PathProgramCache]: Analyzing trace with hash 976006743, now seen corresponding path program 1 times [2024-11-06 19:49:04,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:04,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850589022] [2024-11-06 19:49:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:04,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-06 19:49:05,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:05,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850589022] [2024-11-06 19:49:05,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850589022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:05,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:05,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:05,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70083878] [2024-11-06 19:49:05,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:05,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:05,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:05,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:05,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:05,060 INFO L87 Difference]: Start difference. First operand 88580 states and 97083 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:07,842 INFO L93 Difference]: Finished difference Result 200765 states and 220694 transitions. [2024-11-06 19:49:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:07,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2024-11-06 19:49:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:07,961 INFO L225 Difference]: With dead ends: 200765 [2024-11-06 19:49:07,961 INFO L226 Difference]: Without dead ends: 112974 [2024-11-06 19:49:08,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:08,009 INFO L432 NwaCegarLoop]: 752 mSDtfsCounter, 817 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:08,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 833 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 19:49:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112974 states. [2024-11-06 19:49:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112974 to 111386. [2024-11-06 19:49:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111386 states, 111385 states have (on average 1.088063922431207) internal successors, (121194), 111385 states have internal predecessors, (121194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111386 states to 111386 states and 121194 transitions. [2024-11-06 19:49:09,234 INFO L78 Accepts]: Start accepts. Automaton has 111386 states and 121194 transitions. Word has length 374 [2024-11-06 19:49:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:09,234 INFO L471 AbstractCegarLoop]: Abstraction has 111386 states and 121194 transitions. [2024-11-06 19:49:09,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 111386 states and 121194 transitions. [2024-11-06 19:49:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-06 19:49:09,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:09,241 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:09,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 19:49:09,242 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:09,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:09,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1106420568, now seen corresponding path program 1 times [2024-11-06 19:49:09,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:09,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951848587] [2024-11-06 19:49:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:09,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 319 proven. 113 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-06 19:49:10,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:10,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951848587] [2024-11-06 19:49:10,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951848587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:49:10,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596566749] [2024-11-06 19:49:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:10,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:10,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:49:10,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:49:10,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 19:49:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:10,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:49:10,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:49:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-11-06 19:49:10,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:49:10,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596566749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:10,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:49:10,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-06 19:49:10,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685870826] [2024-11-06 19:49:10,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:10,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:10,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:49:10,353 INFO L87 Difference]: Start difference. First operand 111386 states and 121194 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:12,975 INFO L93 Difference]: Finished difference Result 223557 states and 243180 transitions. [2024-11-06 19:49:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 404 [2024-11-06 19:49:12,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:13,111 INFO L225 Difference]: With dead ends: 223557 [2024-11-06 19:49:13,111 INFO L226 Difference]: Without dead ends: 112960 [2024-11-06 19:49:13,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-06 19:49:13,179 INFO L432 NwaCegarLoop]: 1383 mSDtfsCounter, 1022 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:13,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1465 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 19:49:13,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112960 states. [2024-11-06 19:49:14,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112960 to 111374. [2024-11-06 19:49:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111374 states, 111373 states have (on average 1.06472843507852) internal successors, (118582), 111373 states have internal predecessors, (118582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111374 states to 111374 states and 118582 transitions. [2024-11-06 19:49:14,491 INFO L78 Accepts]: Start accepts. Automaton has 111374 states and 118582 transitions. Word has length 404 [2024-11-06 19:49:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:14,492 INFO L471 AbstractCegarLoop]: Abstraction has 111374 states and 118582 transitions. [2024-11-06 19:49:14,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 111374 states and 118582 transitions. [2024-11-06 19:49:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-06 19:49:14,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:14,502 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 19:49:14,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 19:49:14,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:14,703 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:14,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:14,703 INFO L85 PathProgramCache]: Analyzing trace with hash -663684841, now seen corresponding path program 1 times [2024-11-06 19:49:14,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:14,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582635983] [2024-11-06 19:49:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:14,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-06 19:49:15,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:15,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582635983] [2024-11-06 19:49:15,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582635983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:15,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:15,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319187520] [2024-11-06 19:49:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:15,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:15,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:15,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:15,017 INFO L87 Difference]: Start difference. First operand 111374 states and 118582 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:17,935 INFO L93 Difference]: Finished difference Result 245570 states and 262021 transitions. [2024-11-06 19:49:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:17,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 486 [2024-11-06 19:49:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:18,062 INFO L225 Difference]: With dead ends: 245570 [2024-11-06 19:49:18,062 INFO L226 Difference]: Without dead ends: 133411 [2024-11-06 19:49:18,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:18,096 INFO L432 NwaCegarLoop]: 1703 mSDtfsCounter, 697 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:18,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1837 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 19:49:18,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133411 states. [2024-11-06 19:49:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133411 to 133397. [2024-11-06 19:49:19,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133397 states, 133396 states have (on average 1.0564709586494347) internal successors, (140929), 133396 states have internal predecessors, (140929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133397 states to 133397 states and 140929 transitions. [2024-11-06 19:49:19,121 INFO L78 Accepts]: Start accepts. Automaton has 133397 states and 140929 transitions. Word has length 486 [2024-11-06 19:49:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:19,121 INFO L471 AbstractCegarLoop]: Abstraction has 133397 states and 140929 transitions. [2024-11-06 19:49:19,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 133397 states and 140929 transitions. [2024-11-06 19:49:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2024-11-06 19:49:19,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:19,129 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:19,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 19:49:19,130 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:19,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1195250089, now seen corresponding path program 1 times [2024-11-06 19:49:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98695751] [2024-11-06 19:49:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 262 proven. 110 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-06 19:49:20,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:20,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98695751] [2024-11-06 19:49:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98695751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:49:20,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393582086] [2024-11-06 19:49:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:20,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:20,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:49:20,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:49:20,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 19:49:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:20,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 19:49:20,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:49:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-11-06 19:49:20,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:49:20,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393582086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:20,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:49:20,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-06 19:49:20,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428618340] [2024-11-06 19:49:20,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:20,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:20,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:20,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:20,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-06 19:49:20,370 INFO L87 Difference]: Start difference. First operand 133397 states and 140929 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:23,597 INFO L93 Difference]: Finished difference Result 300703 states and 317957 transitions. [2024-11-06 19:49:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:23,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 509 [2024-11-06 19:49:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:23,752 INFO L225 Difference]: With dead ends: 300703 [2024-11-06 19:49:23,752 INFO L226 Difference]: Without dead ends: 168095 [2024-11-06 19:49:23,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-06 19:49:23,817 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 1009 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 3599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:23,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 475 Invalid, 3599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-06 19:49:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168095 states. [2024-11-06 19:49:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168095 to 164095. [2024-11-06 19:49:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164095 states, 164094 states have (on average 1.057698636147574) internal successors, (173562), 164094 states have internal predecessors, (173562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164095 states to 164095 states and 173562 transitions. [2024-11-06 19:49:25,230 INFO L78 Accepts]: Start accepts. Automaton has 164095 states and 173562 transitions. Word has length 509 [2024-11-06 19:49:25,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:25,230 INFO L471 AbstractCegarLoop]: Abstraction has 164095 states and 173562 transitions. [2024-11-06 19:49:25,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:25,231 INFO L276 IsEmpty]: Start isEmpty. Operand 164095 states and 173562 transitions. [2024-11-06 19:49:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2024-11-06 19:49:25,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:25,242 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:25,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 19:49:25,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:25,443 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:25,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash -396042517, now seen corresponding path program 1 times [2024-11-06 19:49:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556068144] [2024-11-06 19:49:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 316 proven. 110 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-06 19:49:26,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:26,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556068144] [2024-11-06 19:49:26,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556068144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 19:49:26,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785608626] [2024-11-06 19:49:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:26,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 19:49:26,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 19:49:26,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 19:49:26,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 19:49:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:26,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 19:49:26,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 19:49:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-06 19:49:27,522 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 19:49:27,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785608626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:27,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 19:49:27,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-06 19:49:27,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812420660] [2024-11-06 19:49:27,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:27,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:27,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:27,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:49:27,525 INFO L87 Difference]: Start difference. First operand 164095 states and 173562 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:30,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:30,802 INFO L93 Difference]: Finished difference Result 315605 states and 334322 transitions. [2024-11-06 19:49:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:30,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 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 557 [2024-11-06 19:49:30,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:30,982 INFO L225 Difference]: With dead ends: 315605 [2024-11-06 19:49:30,982 INFO L226 Difference]: Without dead ends: 168830 [2024-11-06 19:49:31,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 19:49:31,073 INFO L432 NwaCegarLoop]: 980 mSDtfsCounter, 543 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:31,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1109 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 19:49:31,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168830 states. [2024-11-06 19:49:32,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168830 to 168033. [2024-11-06 19:49:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168033 states, 168032 states have (on average 1.052436440677966) internal successors, (176843), 168032 states have internal predecessors, (176843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168033 states to 168033 states and 176843 transitions. [2024-11-06 19:49:32,624 INFO L78 Accepts]: Start accepts. Automaton has 168033 states and 176843 transitions. Word has length 557 [2024-11-06 19:49:32,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:32,624 INFO L471 AbstractCegarLoop]: Abstraction has 168033 states and 176843 transitions. [2024-11-06 19:49:32,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 168033 states and 176843 transitions. [2024-11-06 19:49:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-06 19:49:32,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:32,636 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:32,648 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 19:49:32,836 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,SelfDestructingSolverStorable16 [2024-11-06 19:49:32,836 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:32,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash 291527895, now seen corresponding path program 1 times [2024-11-06 19:49:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647424886] [2024-11-06 19:49:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2024-11-06 19:49:33,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647424886] [2024-11-06 19:49:33,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647424886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:33,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:33,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 19:49:33,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383131114] [2024-11-06 19:49:33,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:33,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:33,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:33,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:33,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:33,213 INFO L87 Difference]: Start difference. First operand 168033 states and 176843 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 19:49:35,184 INFO L93 Difference]: Finished difference Result 316366 states and 333484 transitions. [2024-11-06 19:49:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 19:49:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 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 576 [2024-11-06 19:49:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 19:49:35,353 INFO L225 Difference]: With dead ends: 316366 [2024-11-06 19:49:35,353 INFO L226 Difference]: Without dead ends: 167230 [2024-11-06 19:49:35,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:35,417 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 1562 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 19:49:35,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 268 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 19:49:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167230 states. [2024-11-06 19:49:36,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167230 to 167229. [2024-11-06 19:49:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167229 states, 167228 states have (on average 1.051875284043342) internal successors, (175903), 167228 states have internal predecessors, (175903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167229 states to 167229 states and 175903 transitions. [2024-11-06 19:49:37,098 INFO L78 Accepts]: Start accepts. Automaton has 167229 states and 175903 transitions. Word has length 576 [2024-11-06 19:49:37,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 19:49:37,099 INFO L471 AbstractCegarLoop]: Abstraction has 167229 states and 175903 transitions. [2024-11-06 19:49:37,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 19:49:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 167229 states and 175903 transitions. [2024-11-06 19:49:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2024-11-06 19:49:37,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 19:49:37,109 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 19:49:37,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-06 19:49:37,109 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 19:49:37,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 19:49:37,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1659701664, now seen corresponding path program 1 times [2024-11-06 19:49:37,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 19:49:37,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877569412] [2024-11-06 19:49:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 19:49:37,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 19:49:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 19:49:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 471 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2024-11-06 19:49:37,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 19:49:37,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877569412] [2024-11-06 19:49:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877569412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 19:49:37,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 19:49:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 19:49:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121701988] [2024-11-06 19:49:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 19:49:37,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 19:49:37,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 19:49:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 19:49:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 19:49:37,577 INFO L87 Difference]: Start difference. First operand 167229 states and 175903 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)