./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/eca-rers2012/Problem17_label24.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'b3ef3977d042afb4071915ce97341123de4af0d70f58c82feb0983ea770e3ba0'] 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/Problem17_label24.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3ef3977d042afb4071915ce97341123de4af0d70f58c82feb0983ea770e3ba0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 20:06:09,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 20:06:09,893 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 20:06:09,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 20:06:09,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 20:06:09,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 20:06:09,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 20:06:09,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 20:06:09,936 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 20:06:09,936 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 20:06:09,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 20:06:09,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 20:06:09,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 20:06:09,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 20:06:09,938 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 20:06:09,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 20:06:09,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 20:06:09,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:06:09,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 20:06:09,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 20:06:09,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 20:06:09,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 20:06:09,941 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 -> b3ef3977d042afb4071915ce97341123de4af0d70f58c82feb0983ea770e3ba0 [2024-11-06 20:06:10,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 20:06:10,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 20:06:10,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 20:06:10,226 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 20:06:10,226 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 20:06:10,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label24.c [2024-11-06 20:06:11,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 20:06:11,952 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 20:06:11,954 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label24.c [2024-11-06 20:06:11,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2ebc45ca9/e4fa20bd05e14e61b94cd9353d658e66/FLAG74a9722a5 [2024-11-06 20:06:12,002 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2ebc45ca9/e4fa20bd05e14e61b94cd9353d658e66 [2024-11-06 20:06:12,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 20:06:12,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 20:06:12,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 20:06:12,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 20:06:12,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 20:06:12,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:12,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0d37b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12, skipping insertion in model container [2024-11-06 20:06:12,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:12,093 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 20:06:12,299 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/Problem17_label24.c[8922,8935] [2024-11-06 20:06:12,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:06:12,689 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 20:06:12,716 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/Problem17_label24.c[8922,8935] [2024-11-06 20:06:12,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:06:12,977 INFO L204 MainTranslator]: Completed translation [2024-11-06 20:06:12,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12 WrapperNode [2024-11-06 20:06:12,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 20:06:12,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 20:06:12,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 20:06:12,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 20:06:12,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,329 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-06 20:06:13,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 20:06:13,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 20:06:13,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 20:06:13,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 20:06:13,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,642 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 20:06:13,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 20:06:13,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 20:06:13,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 20:06:13,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 20:06:13,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (1/1) ... [2024-11-06 20:06:13,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:06:14,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:06:14,023 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 20:06:14,026 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 20:06:14,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 20:06:14,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 20:06:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 20:06:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 20:06:14,120 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 20:06:14,121 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 20:06:17,481 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-06 20:06:17,482 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 20:06:17,523 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 20:06:17,531 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 20:06:17,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:06:17 BoogieIcfgContainer [2024-11-06 20:06:17,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 20:06:17,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 20:06:17,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 20:06:17,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 20:06:17,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:06:12" (1/3) ... [2024-11-06 20:06:17,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b26516a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:06:17, skipping insertion in model container [2024-11-06 20:06:17,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:06:12" (2/3) ... [2024-11-06 20:06:17,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b26516a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:06:17, skipping insertion in model container [2024-11-06 20:06:17,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:06:17" (3/3) ... [2024-11-06 20:06:17,547 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label24.c [2024-11-06 20:06:17,583 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 20:06:17,584 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 20:06:17,686 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 20:06:17,697 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;@634b1f05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 20:06:17,699 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 20:06:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 20:06:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-06 20:06:17,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:17,716 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:17,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:17,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash -634083006, now seen corresponding path program 1 times [2024-11-06 20:06:17,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:17,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991938412] [2024-11-06 20:06:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:18,124 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 20:06:18,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:18,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991938412] [2024-11-06 20:06:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991938412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:18,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:18,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:06:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226089604] [2024-11-06 20:06:18,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:18,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:18,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:18,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:18,154 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:06:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:20,485 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-06 20:06:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:20,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-06 20:06:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:20,498 INFO L225 Difference]: With dead ends: 1644 [2024-11-06 20:06:20,499 INFO L226 Difference]: Without dead ends: 977 [2024-11-06 20:06:20,503 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 20:06:20,507 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 428 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:20,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 20:06:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-06 20:06:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-06 20:06:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 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 20:06:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-06 20:06:20,588 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 60 [2024-11-06 20:06:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:20,588 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-06 20:06:20,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:06:20,589 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-06 20:06:20,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-06 20:06:20,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:20,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:20,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 20:06:20,598 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:20,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:20,599 INFO L85 PathProgramCache]: Analyzing trace with hash 373934106, now seen corresponding path program 1 times [2024-11-06 20:06:20,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:20,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321956665] [2024-11-06 20:06:20,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:20,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:20,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:20,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321956665] [2024-11-06 20:06:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321956665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:20,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:20,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:06:20,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196533198] [2024-11-06 20:06:20,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:20,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:20,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:20,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:20,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:20,866 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 20:06:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:23,019 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2024-11-06 20:06:23,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:23,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-11-06 20:06:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:23,028 INFO L225 Difference]: With dead ends: 2813 [2024-11-06 20:06:23,028 INFO L226 Difference]: Without dead ends: 1844 [2024-11-06 20:06:23,031 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 20:06:23,032 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:23,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 20:06:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-06 20:06:23,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2024-11-06 20:06:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 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 20:06:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2024-11-06 20:06:23,084 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 127 [2024-11-06 20:06:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:23,086 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2024-11-06 20:06:23,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 20:06:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2024-11-06 20:06:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-06 20:06:23,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:23,088 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:23,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 20:06:23,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:23,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1612782126, now seen corresponding path program 1 times [2024-11-06 20:06:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:23,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013297320] [2024-11-06 20:06:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:23,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:23,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:23,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013297320] [2024-11-06 20:06:23,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013297320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:23,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:23,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:23,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520574073] [2024-11-06 20:06:23,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:23,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:23,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:23,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:23,435 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 20:06:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:25,610 INFO L93 Difference]: Finished difference Result 4552 states and 6282 transitions. [2024-11-06 20:06:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:25,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-11-06 20:06:25,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:25,622 INFO L225 Difference]: With dead ends: 4552 [2024-11-06 20:06:25,622 INFO L226 Difference]: Without dead ends: 2713 [2024-11-06 20:06:25,625 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 20:06:25,626 INFO L432 NwaCegarLoop]: 818 mSDtfsCounter, 447 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:25,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 20:06:25,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-11-06 20:06:25,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2024-11-06 20:06:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3003690036900368) internal successors, (3524), 2710 states have internal predecessors, (3524), 0 states have call successors, (0), 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 20:06:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3524 transitions. [2024-11-06 20:06:25,684 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3524 transitions. Word has length 130 [2024-11-06 20:06:25,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:25,685 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3524 transitions. [2024-11-06 20:06:25,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 20:06:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3524 transitions. [2024-11-06 20:06:25,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-06 20:06:25,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:25,693 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 20:06:25,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 20:06:25,693 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:25,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1390509399, now seen corresponding path program 1 times [2024-11-06 20:06:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:25,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364343276] [2024-11-06 20:06:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-06 20:06:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:26,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364343276] [2024-11-06 20:06:26,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364343276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:26,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:26,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:06:26,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217663680] [2024-11-06 20:06:26,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:26,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:26,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:26,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:26,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:26,020 INFO L87 Difference]: Start difference. First operand 2711 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 20:06:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:27,641 INFO L93 Difference]: Finished difference Result 7984 states and 10361 transitions. [2024-11-06 20:06:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:27,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 199 [2024-11-06 20:06:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:27,657 INFO L225 Difference]: With dead ends: 7984 [2024-11-06 20:06:27,657 INFO L226 Difference]: Without dead ends: 4421 [2024-11-06 20:06:27,663 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 20:06:27,664 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:27,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 20:06:27,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2024-11-06 20:06:27,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3571. [2024-11-06 20:06:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3570 states have (on average 1.1775910364145659) internal successors, (4204), 3570 states have internal predecessors, (4204), 0 states have call successors, (0), 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 20:06:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4204 transitions. [2024-11-06 20:06:27,731 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4204 transitions. Word has length 199 [2024-11-06 20:06:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:27,732 INFO L471 AbstractCegarLoop]: Abstraction has 3571 states and 4204 transitions. [2024-11-06 20:06:27,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 20:06:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4204 transitions. [2024-11-06 20:06:27,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-06 20:06:27,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:27,736 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:27,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 20:06:27,736 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:27,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash -11472155, now seen corresponding path program 1 times [2024-11-06 20:06:27,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:27,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047047740] [2024-11-06 20:06:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:27,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047047740] [2024-11-06 20:06:27,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047047740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:27,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:27,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:27,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217145673] [2024-11-06 20:06:27,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:27,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:27,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:27,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:27,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:27,983 INFO L87 Difference]: Start difference. First operand 3571 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 20:06:29,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:29,468 INFO L93 Difference]: Finished difference Result 9273 states and 11087 transitions. [2024-11-06 20:06:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:29,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2024-11-06 20:06:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:29,483 INFO L225 Difference]: With dead ends: 9273 [2024-11-06 20:06:29,483 INFO L226 Difference]: Without dead ends: 5704 [2024-11-06 20:06:29,487 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 20:06:29,490 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:29,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:06:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2024-11-06 20:06:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5704. [2024-11-06 20:06:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 1.1595651411537786) internal successors, (6613), 5703 states have internal predecessors, (6613), 0 states have call successors, (0), 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 20:06:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 6613 transitions. [2024-11-06 20:06:29,582 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 6613 transitions. Word has length 212 [2024-11-06 20:06:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:29,582 INFO L471 AbstractCegarLoop]: Abstraction has 5704 states and 6613 transitions. [2024-11-06 20:06:29,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 20:06:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 6613 transitions. [2024-11-06 20:06:29,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-06 20:06:29,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:29,586 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 20:06:29,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 20:06:29,587 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:29,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:29,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1357792544, now seen corresponding path program 1 times [2024-11-06 20:06:29,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:29,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700278224] [2024-11-06 20:06:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:29,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-06 20:06:29,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:29,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700278224] [2024-11-06 20:06:29,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700278224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:29,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:29,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:29,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326420341] [2024-11-06 20:06:29,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:29,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:29,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:29,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:29,778 INFO L87 Difference]: Start difference. First operand 5704 states and 6613 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 20:06:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:31,464 INFO L93 Difference]: Finished difference Result 14376 states and 16776 transitions. [2024-11-06 20:06:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:31,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 214 [2024-11-06 20:06:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:31,489 INFO L225 Difference]: With dead ends: 14376 [2024-11-06 20:06:31,489 INFO L226 Difference]: Without dead ends: 8673 [2024-11-06 20:06:31,496 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 20:06:31,498 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 391 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:31,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 20:06:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2024-11-06 20:06:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 5677. [2024-11-06 20:06:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 1.1578576462297392) internal successors, (6572), 5676 states have internal predecessors, (6572), 0 states have call successors, (0), 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 20:06:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 6572 transitions. [2024-11-06 20:06:31,604 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 6572 transitions. Word has length 214 [2024-11-06 20:06:31,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:31,608 INFO L471 AbstractCegarLoop]: Abstraction has 5677 states and 6572 transitions. [2024-11-06 20:06:31,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 20:06:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 6572 transitions. [2024-11-06 20:06:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-06 20:06:31,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:31,616 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:31,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 20:06:31,617 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:31,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:31,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1325464515, now seen corresponding path program 1 times [2024-11-06 20:06:31,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:31,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868330245] [2024-11-06 20:06:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:31,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-06 20:06:31,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:31,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868330245] [2024-11-06 20:06:31,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868330245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:31,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:31,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:31,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630214996] [2024-11-06 20:06:31,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:31,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:31,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:31,828 INFO L87 Difference]: Start difference. First operand 5677 states and 6572 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 20:06:33,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:33,524 INFO L93 Difference]: Finished difference Result 14315 states and 16680 transitions. [2024-11-06 20:06:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:33,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 292 [2024-11-06 20:06:33,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:33,547 INFO L225 Difference]: With dead ends: 14315 [2024-11-06 20:06:33,547 INFO L226 Difference]: Without dead ends: 7790 [2024-11-06 20:06:33,552 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 20:06:33,553 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:33,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 20:06:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2024-11-06 20:06:33,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7790. [2024-11-06 20:06:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7789 states have (on average 1.1186288355372962) internal successors, (8713), 7789 states have internal predecessors, (8713), 0 states have call successors, (0), 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 20:06:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 8713 transitions. [2024-11-06 20:06:33,664 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 8713 transitions. Word has length 292 [2024-11-06 20:06:33,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:33,665 INFO L471 AbstractCegarLoop]: Abstraction has 7790 states and 8713 transitions. [2024-11-06 20:06:33,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 20:06:33,665 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 8713 transitions. [2024-11-06 20:06:33,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-06 20:06:33,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:33,671 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 20:06:33,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 20:06:33,671 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:33,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:33,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2130053414, now seen corresponding path program 1 times [2024-11-06 20:06:33,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:33,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009610925] [2024-11-06 20:06:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:33,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-06 20:06:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:33,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009610925] [2024-11-06 20:06:33,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009610925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:33,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:33,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:33,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587476386] [2024-11-06 20:06:33,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:33,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:33,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:33,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:33,852 INFO L87 Difference]: Start difference. First operand 7790 states and 8713 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 20:06:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:35,488 INFO L93 Difference]: Finished difference Result 18558 states and 20949 transitions. [2024-11-06 20:06:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:35,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 332 [2024-11-06 20:06:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:35,505 INFO L225 Difference]: With dead ends: 18558 [2024-11-06 20:06:35,505 INFO L226 Difference]: Without dead ends: 10770 [2024-11-06 20:06:35,509 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 20:06:35,510 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 445 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:35,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 330 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 20:06:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10770 states. [2024-11-06 20:06:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10770 to 9916. [2024-11-06 20:06:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9916 states, 9915 states have (on average 1.1232476046394353) internal successors, (11137), 9915 states have internal predecessors, (11137), 0 states have call successors, (0), 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 20:06:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 11137 transitions. [2024-11-06 20:06:35,617 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 11137 transitions. Word has length 332 [2024-11-06 20:06:35,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:35,618 INFO L471 AbstractCegarLoop]: Abstraction has 9916 states and 11137 transitions. [2024-11-06 20:06:35,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 20:06:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 11137 transitions. [2024-11-06 20:06:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-06 20:06:35,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:35,625 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:35,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 20:06:35,625 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:35,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:35,626 INFO L85 PathProgramCache]: Analyzing trace with hash 273177675, now seen corresponding path program 1 times [2024-11-06 20:06:35,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:35,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97054038] [2024-11-06 20:06:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:35,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-06 20:06:35,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:35,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97054038] [2024-11-06 20:06:35,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97054038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:35,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:35,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:35,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551848338] [2024-11-06 20:06:35,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:35,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:35,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:35,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:35,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:35,972 INFO L87 Difference]: Start difference. First operand 9916 states and 11137 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 20:06:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:37,651 INFO L93 Difference]: Finished difference Result 27952 states and 31474 transitions. [2024-11-06 20:06:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:37,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 349 [2024-11-06 20:06:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:37,686 INFO L225 Difference]: With dead ends: 27952 [2024-11-06 20:06:37,686 INFO L226 Difference]: Without dead ends: 18038 [2024-11-06 20:06:37,695 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 20:06:37,697 INFO L432 NwaCegarLoop]: 756 mSDtfsCounter, 441 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:37,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 807 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:06:37,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18038 states. [2024-11-06 20:06:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18038 to 17163. [2024-11-06 20:06:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17163 states, 17162 states have (on average 1.1156625101969468) internal successors, (19147), 17162 states have internal predecessors, (19147), 0 states have call successors, (0), 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 20:06:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17163 states to 17163 states and 19147 transitions. [2024-11-06 20:06:37,878 INFO L78 Accepts]: Start accepts. Automaton has 17163 states and 19147 transitions. Word has length 349 [2024-11-06 20:06:37,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:37,879 INFO L471 AbstractCegarLoop]: Abstraction has 17163 states and 19147 transitions. [2024-11-06 20:06:37,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 20:06:37,880 INFO L276 IsEmpty]: Start isEmpty. Operand 17163 states and 19147 transitions. [2024-11-06 20:06:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-06 20:06:37,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:37,891 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:37,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 20:06:37,891 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:37,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash 903485880, now seen corresponding path program 1 times [2024-11-06 20:06:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:37,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805689579] [2024-11-06 20:06:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:37,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:38,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:38,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805689579] [2024-11-06 20:06:38,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805689579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:38,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:38,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168360230] [2024-11-06 20:06:38,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:38,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:06:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:06:38,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:06:38,224 INFO L87 Difference]: Start difference. First operand 17163 states and 19147 transitions. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 20:06:40,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:40,355 INFO L93 Difference]: Finished difference Result 42008 states and 46867 transitions. [2024-11-06 20:06:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:06:40,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 399 [2024-11-06 20:06:40,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:40,407 INFO L225 Difference]: With dead ends: 42008 [2024-11-06 20:06:40,407 INFO L226 Difference]: Without dead ends: 24422 [2024-11-06 20:06:40,428 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 20:06:40,429 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 610 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:40,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 233 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 20:06:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24422 states. [2024-11-06 20:06:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24422 to 24420. [2024-11-06 20:06:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24420 states, 24419 states have (on average 1.1172857201359596) internal successors, (27283), 24419 states have internal predecessors, (27283), 0 states have call successors, (0), 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 20:06:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24420 states to 24420 states and 27283 transitions. [2024-11-06 20:06:40,725 INFO L78 Accepts]: Start accepts. Automaton has 24420 states and 27283 transitions. Word has length 399 [2024-11-06 20:06:40,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:40,726 INFO L471 AbstractCegarLoop]: Abstraction has 24420 states and 27283 transitions. [2024-11-06 20:06:40,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 20:06:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 24420 states and 27283 transitions. [2024-11-06 20:06:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-06 20:06:40,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:40,736 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-06 20:06:40,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 20:06:40,737 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:40,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:40,737 INFO L85 PathProgramCache]: Analyzing trace with hash 231337437, now seen corresponding path program 1 times [2024-11-06 20:06:40,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:40,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026270697] [2024-11-06 20:06:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:40,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-06 20:06:41,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026270697] [2024-11-06 20:06:41,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026270697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:41,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:41,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:41,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810204876] [2024-11-06 20:06:41,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:41,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:41,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:41,053 INFO L87 Difference]: Start difference. First operand 24420 states and 27283 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 20:06:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:42,753 INFO L93 Difference]: Finished difference Result 55245 states and 61737 transitions. [2024-11-06 20:06:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:42,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 420 [2024-11-06 20:06:42,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:42,791 INFO L225 Difference]: With dead ends: 55245 [2024-11-06 20:06:42,792 INFO L226 Difference]: Without dead ends: 30827 [2024-11-06 20:06:42,813 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 20:06:42,814 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 416 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:42,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 765 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:06:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30827 states. [2024-11-06 20:06:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30827 to 23983. [2024-11-06 20:06:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23983 states, 23982 states have (on average 1.1184221499457927) internal successors, (26822), 23982 states have internal predecessors, (26822), 0 states have call successors, (0), 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 20:06:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23983 states to 23983 states and 26822 transitions. [2024-11-06 20:06:43,101 INFO L78 Accepts]: Start accepts. Automaton has 23983 states and 26822 transitions. Word has length 420 [2024-11-06 20:06:43,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:43,103 INFO L471 AbstractCegarLoop]: Abstraction has 23983 states and 26822 transitions. [2024-11-06 20:06:43,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 20:06:43,103 INFO L276 IsEmpty]: Start isEmpty. Operand 23983 states and 26822 transitions. [2024-11-06 20:06:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-06 20:06:43,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:43,113 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:06:43,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 20:06:43,113 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:43,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash 782937122, now seen corresponding path program 1 times [2024-11-06 20:06:43,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:43,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843965594] [2024-11-06 20:06:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:43,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-06 20:06:43,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:43,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843965594] [2024-11-06 20:06:43,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843965594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:43,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:43,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945710072] [2024-11-06 20:06:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:43,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:43,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:43,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:43,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:43,378 INFO L87 Difference]: Start difference. First operand 23983 states and 26822 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 20:06:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:45,001 INFO L93 Difference]: Finished difference Result 57340 states and 64370 transitions. [2024-11-06 20:06:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:45,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 421 [2024-11-06 20:06:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:45,041 INFO L225 Difference]: With dead ends: 57340 [2024-11-06 20:06:45,041 INFO L226 Difference]: Without dead ends: 33359 [2024-11-06 20:06:45,065 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 20:06:45,066 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 506 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:45,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 252 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:06:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33359 states. [2024-11-06 20:06:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33359 to 33341. [2024-11-06 20:06:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33341 states, 33340 states have (on average 1.1147870425914816) internal successors, (37167), 33340 states have internal predecessors, (37167), 0 states have call successors, (0), 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 20:06:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33341 states to 33341 states and 37167 transitions. [2024-11-06 20:06:45,464 INFO L78 Accepts]: Start accepts. Automaton has 33341 states and 37167 transitions. Word has length 421 [2024-11-06 20:06:45,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:45,464 INFO L471 AbstractCegarLoop]: Abstraction has 33341 states and 37167 transitions. [2024-11-06 20:06:45,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 20:06:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 33341 states and 37167 transitions. [2024-11-06 20:06:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-06 20:06:45,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:45,474 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-06 20:06:45,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 20:06:45,475 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:45,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash -649020687, now seen corresponding path program 1 times [2024-11-06 20:06:45,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:45,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045265084] [2024-11-06 20:06:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:45,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-11-06 20:06:45,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:45,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045265084] [2024-11-06 20:06:45,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045265084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:45,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:45,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:45,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641896187] [2024-11-06 20:06:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:45,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:45,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:45,770 INFO L87 Difference]: Start difference. First operand 33341 states and 37167 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 20:06:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:47,348 INFO L93 Difference]: Finished difference Result 75204 states and 83736 transitions. [2024-11-06 20:06:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 428 [2024-11-06 20:06:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:47,392 INFO L225 Difference]: With dead ends: 75204 [2024-11-06 20:06:47,392 INFO L226 Difference]: Without dead ends: 40158 [2024-11-06 20:06:47,417 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 20:06:47,417 INFO L432 NwaCegarLoop]: 803 mSDtfsCounter, 393 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:47,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 861 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:06:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40158 states. [2024-11-06 20:06:47,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40158 to 38863. [2024-11-06 20:06:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38863 states, 38862 states have (on average 1.106324944676033) internal successors, (42994), 38862 states have internal predecessors, (42994), 0 states have call successors, (0), 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 20:06:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38863 states to 38863 states and 42994 transitions. [2024-11-06 20:06:47,916 INFO L78 Accepts]: Start accepts. Automaton has 38863 states and 42994 transitions. Word has length 428 [2024-11-06 20:06:47,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:47,917 INFO L471 AbstractCegarLoop]: Abstraction has 38863 states and 42994 transitions. [2024-11-06 20:06:47,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 20:06:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 38863 states and 42994 transitions. [2024-11-06 20:06:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-06 20:06:47,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:47,927 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:47,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 20:06:47,927 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:47,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:47,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1856333145, now seen corresponding path program 1 times [2024-11-06 20:06:47,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:47,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694742218] [2024-11-06 20:06:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 115 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:49,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:49,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694742218] [2024-11-06 20:06:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694742218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:06:49,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623420083] [2024-11-06 20:06:49,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:49,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:06:49,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:06:49,679 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 20:06:49,681 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 20:06:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:49,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 20:06:49,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:06:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 115 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:50,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 20:06:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:06:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623420083] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 20:06:50,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-06 20:06:50,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 10 [2024-11-06 20:06:50,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392900750] [2024-11-06 20:06:50,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:50,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:06:50,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:50,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:06:50,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-06 20:06:50,962 INFO L87 Difference]: Start difference. First operand 38863 states and 42994 transitions. Second operand has 4 states, 4 states have (on average 111.5) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 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 20:06:53,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:53,660 INFO L93 Difference]: Finished difference Result 106690 states and 118393 transitions. [2024-11-06 20:06:53,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:06:53,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 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 446 [2024-11-06 20:06:53,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:53,732 INFO L225 Difference]: With dead ends: 106690 [2024-11-06 20:06:53,732 INFO L226 Difference]: Without dead ends: 66970 [2024-11-06 20:06:53,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-06 20:06:53,765 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 702 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:53,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 174 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 20:06:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66970 states. [2024-11-06 20:06:54,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66970 to 63135. [2024-11-06 20:06:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63135 states, 63134 states have (on average 1.099851110336744) internal successors, (69438), 63134 states have internal predecessors, (69438), 0 states have call successors, (0), 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 20:06:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63135 states to 63135 states and 69438 transitions. [2024-11-06 20:06:54,637 INFO L78 Accepts]: Start accepts. Automaton has 63135 states and 69438 transitions. Word has length 446 [2024-11-06 20:06:54,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:54,638 INFO L471 AbstractCegarLoop]: Abstraction has 63135 states and 69438 transitions. [2024-11-06 20:06:54,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 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 20:06:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 63135 states and 69438 transitions. [2024-11-06 20:06:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-06 20:06:54,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:54,648 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:54,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 20:06:54,848 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,SelfDestructingSolverStorable13 [2024-11-06 20:06:54,849 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:54,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash 653691728, now seen corresponding path program 1 times [2024-11-06 20:06:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:54,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20946431] [2024-11-06 20:06:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:54,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-06 20:06:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:55,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20946431] [2024-11-06 20:06:55,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20946431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:55,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:55,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:55,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571788719] [2024-11-06 20:06:55,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:55,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:55,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:55,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:55,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:55,043 INFO L87 Difference]: Start difference. First operand 63135 states and 69438 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 20:06:56,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:56,791 INFO L93 Difference]: Finished difference Result 137747 states and 151519 transitions. [2024-11-06 20:06:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:56,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 464 [2024-11-06 20:06:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:56,869 INFO L225 Difference]: With dead ends: 137747 [2024-11-06 20:06:56,869 INFO L226 Difference]: Without dead ends: 67795 [2024-11-06 20:06:56,908 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 20:06:56,909 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 492 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:56,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 715 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:06:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67795 states. [2024-11-06 20:06:57,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67795 to 67785. [2024-11-06 20:06:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67785 states, 67784 states have (on average 1.083825091467013) internal successors, (73466), 67784 states have internal predecessors, (73466), 0 states have call successors, (0), 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 20:06:58,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67785 states to 67785 states and 73466 transitions. [2024-11-06 20:06:58,065 INFO L78 Accepts]: Start accepts. Automaton has 67785 states and 73466 transitions. Word has length 464 [2024-11-06 20:06:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:58,065 INFO L471 AbstractCegarLoop]: Abstraction has 67785 states and 73466 transitions. [2024-11-06 20:06:58,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 20:06:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 67785 states and 73466 transitions. [2024-11-06 20:06:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2024-11-06 20:06:58,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:58,096 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:58,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 20:06:58,096 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:58,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash 505047341, now seen corresponding path program 1 times [2024-11-06 20:06:58,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:58,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400989038] [2024-11-06 20:06:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-06 20:06:58,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:58,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400989038] [2024-11-06 20:06:58,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400989038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:58,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:58,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:06:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028683813] [2024-11-06 20:06:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:58,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:06:58,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:06:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:06:58,798 INFO L87 Difference]: Start difference. First operand 67785 states and 73466 transitions. Second operand has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 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 20:07:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:01,497 INFO L93 Difference]: Finished difference Result 154746 states and 167583 transitions. [2024-11-06 20:07:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:01,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 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 762 [2024-11-06 20:07:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:01,596 INFO L225 Difference]: With dead ends: 154746 [2024-11-06 20:07:01,596 INFO L226 Difference]: Without dead ends: 84838 [2024-11-06 20:07:01,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:07:01,644 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 543 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:01,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 232 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-06 20:07:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84838 states. [2024-11-06 20:07:02,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84838 to 63509. [2024-11-06 20:07:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63509 states, 63508 states have (on average 1.084524784279146) internal successors, (68876), 63508 states have internal predecessors, (68876), 0 states have call successors, (0), 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 20:07:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63509 states to 63509 states and 68876 transitions. [2024-11-06 20:07:02,613 INFO L78 Accepts]: Start accepts. Automaton has 63509 states and 68876 transitions. Word has length 762 [2024-11-06 20:07:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:02,614 INFO L471 AbstractCegarLoop]: Abstraction has 63509 states and 68876 transitions. [2024-11-06 20:07:02,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 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 20:07:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 63509 states and 68876 transitions. [2024-11-06 20:07:02,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2024-11-06 20:07:02,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:02,647 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:02,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-06 20:07:02,647 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:02,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:02,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1446698845, now seen corresponding path program 1 times [2024-11-06 20:07:02,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:02,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101973335] [2024-11-06 20:07:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:02,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2024-11-06 20:07:03,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:03,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101973335] [2024-11-06 20:07:03,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101973335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:03,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:03,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994878593] [2024-11-06 20:07:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:03,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:03,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:03,134 INFO L87 Difference]: Start difference. First operand 63509 states and 68876 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 20:07:04,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:04,737 INFO L93 Difference]: Finished difference Result 132098 states and 143100 transitions. [2024-11-06 20:07:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:04,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 794 [2024-11-06 20:07:04,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:04,803 INFO L225 Difference]: With dead ends: 132098 [2024-11-06 20:07:04,803 INFO L226 Difference]: Without dead ends: 66461 [2024-11-06 20:07:04,828 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 20:07:04,829 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 460 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:04,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 723 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:07:04,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66461 states. [2024-11-06 20:07:05,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66461 to 61356. [2024-11-06 20:07:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61356 states, 61355 states have (on average 1.0662374704588053) internal successors, (65419), 61355 states have internal predecessors, (65419), 0 states have call successors, (0), 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 20:07:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61356 states to 61356 states and 65419 transitions. [2024-11-06 20:07:05,473 INFO L78 Accepts]: Start accepts. Automaton has 61356 states and 65419 transitions. Word has length 794 [2024-11-06 20:07:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:05,473 INFO L471 AbstractCegarLoop]: Abstraction has 61356 states and 65419 transitions. [2024-11-06 20:07:05,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 20:07:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 61356 states and 65419 transitions. [2024-11-06 20:07:05,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2024-11-06 20:07:05,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:05,513 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:07:05,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-06 20:07:05,513 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:05,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:05,513 INFO L85 PathProgramCache]: Analyzing trace with hash 764752180, now seen corresponding path program 1 times [2024-11-06 20:07:05,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:05,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540248012] [2024-11-06 20:07:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:05,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2024-11-06 20:07:06,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:06,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540248012] [2024-11-06 20:07:06,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540248012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:06,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:06,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:07:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002259181] [2024-11-06 20:07:06,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:06,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:06,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:06,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:06,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:06,215 INFO L87 Difference]: Start difference. First operand 61356 states and 65419 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 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 20:07:07,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:07,199 INFO L93 Difference]: Finished difference Result 117163 states and 124914 transitions. [2024-11-06 20:07:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:07,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 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 847 [2024-11-06 20:07:07,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:07,268 INFO L225 Difference]: With dead ends: 117163 [2024-11-06 20:07:07,268 INFO L226 Difference]: Without dead ends: 55808 [2024-11-06 20:07:07,302 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 20:07:07,303 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 376 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:07,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 71 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 20:07:07,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55808 states. [2024-11-06 20:07:07,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55808 to 55802. [2024-11-06 20:07:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55802 states, 55801 states have (on average 1.0657156681779896) internal successors, (59468), 55801 states have internal predecessors, (59468), 0 states have call successors, (0), 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 20:07:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55802 states to 55802 states and 59468 transitions. [2024-11-06 20:07:07,857 INFO L78 Accepts]: Start accepts. Automaton has 55802 states and 59468 transitions. Word has length 847 [2024-11-06 20:07:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:07,858 INFO L471 AbstractCegarLoop]: Abstraction has 55802 states and 59468 transitions. [2024-11-06 20:07:07,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 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 20:07:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 55802 states and 59468 transitions. [2024-11-06 20:07:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2024-11-06 20:07:08,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:08,006 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:08,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-06 20:07:08,006 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:08,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -856792911, now seen corresponding path program 1 times [2024-11-06 20:07:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463864721] [2024-11-06 20:07:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 940 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-06 20:07:08,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463864721] [2024-11-06 20:07:08,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463864721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:08,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:08,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:08,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420715052] [2024-11-06 20:07:08,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:08,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:08,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:08,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:08,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:08,324 INFO L87 Difference]: Start difference. First operand 55802 states and 59468 transitions. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 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 20:07:09,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:09,744 INFO L93 Difference]: Finished difference Result 113737 states and 120952 transitions. [2024-11-06 20:07:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:09,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 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 852 [2024-11-06 20:07:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:09,801 INFO L225 Difference]: With dead ends: 113737 [2024-11-06 20:07:09,801 INFO L226 Difference]: Without dead ends: 58362 [2024-11-06 20:07:09,828 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 20:07:09,828 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 141 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:09,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 107 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 20:07:09,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58362 states. [2024-11-06 20:07:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58362 to 54520. [2024-11-06 20:07:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54520 states, 54519 states have (on average 1.061794970560722) internal successors, (57888), 54519 states have internal predecessors, (57888), 0 states have call successors, (0), 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 20:07:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54520 states to 54520 states and 57888 transitions. [2024-11-06 20:07:10,293 INFO L78 Accepts]: Start accepts. Automaton has 54520 states and 57888 transitions. Word has length 852 [2024-11-06 20:07:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:10,294 INFO L471 AbstractCegarLoop]: Abstraction has 54520 states and 57888 transitions. [2024-11-06 20:07:10,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 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 20:07:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 54520 states and 57888 transitions. [2024-11-06 20:07:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2024-11-06 20:07:10,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:10,334 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 20:07:10,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-06 20:07:10,334 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:10,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash -98085374, now seen corresponding path program 1 times [2024-11-06 20:07:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:10,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773801429] [2024-11-06 20:07:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:10,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 851 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-06 20:07:11,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:11,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773801429] [2024-11-06 20:07:11,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773801429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:11,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:11,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:11,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019063120] [2024-11-06 20:07:11,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:11,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:11,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:11,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:11,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:11,046 INFO L87 Difference]: Start difference. First operand 54520 states and 57888 transitions. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 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 20:07:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:12,561 INFO L93 Difference]: Finished difference Result 118401 states and 125828 transitions. [2024-11-06 20:07:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:12,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 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 870 [2024-11-06 20:07:12,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:12,633 INFO L225 Difference]: With dead ends: 118401 [2024-11-06 20:07:12,633 INFO L226 Difference]: Without dead ends: 63881 [2024-11-06 20:07:12,671 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 20:07:12,672 INFO L432 NwaCegarLoop]: 583 mSDtfsCounter, 183 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:12,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 608 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 20:07:12,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63881 states. [2024-11-06 20:07:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63881 to 63024. [2024-11-06 20:07:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63024 states, 63023 states have (on average 1.0598352982244577) internal successors, (66794), 63023 states have internal predecessors, (66794), 0 states have call successors, (0), 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 20:07:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63024 states to 63024 states and 66794 transitions. [2024-11-06 20:07:13,768 INFO L78 Accepts]: Start accepts. Automaton has 63024 states and 66794 transitions. Word has length 870 [2024-11-06 20:07:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:13,768 INFO L471 AbstractCegarLoop]: Abstraction has 63024 states and 66794 transitions. [2024-11-06 20:07:13,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 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 20:07:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 63024 states and 66794 transitions. [2024-11-06 20:07:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2024-11-06 20:07:13,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:13,803 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:07:13,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-06 20:07:13,803 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:13,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:13,804 INFO L85 PathProgramCache]: Analyzing trace with hash -36405710, now seen corresponding path program 1 times [2024-11-06 20:07:13,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:13,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520534982] [2024-11-06 20:07:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:13,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 893 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2024-11-06 20:07:14,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:14,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520534982] [2024-11-06 20:07:14,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520534982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:14,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:14,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552018298] [2024-11-06 20:07:14,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:14,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:14,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:14,472 INFO L87 Difference]: Start difference. First operand 63024 states and 66794 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 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 20:07:16,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:16,035 INFO L93 Difference]: Finished difference Result 132016 states and 139893 transitions. [2024-11-06 20:07:16,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:07:16,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 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 967 [2024-11-06 20:07:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:16,119 INFO L225 Difference]: With dead ends: 132016 [2024-11-06 20:07:16,119 INFO L226 Difference]: Without dead ends: 69844 [2024-11-06 20:07:16,162 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 20:07:16,163 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 320 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:16,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 669 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 20:07:16,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69844 states. [2024-11-06 20:07:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69844 to 68980. [2024-11-06 20:07:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68980 states, 68979 states have (on average 1.0571478275997042) internal successors, (72921), 68979 states have internal predecessors, (72921), 0 states have call successors, (0), 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 20:07:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68980 states to 68980 states and 72921 transitions. [2024-11-06 20:07:16,963 INFO L78 Accepts]: Start accepts. Automaton has 68980 states and 72921 transitions. Word has length 967 [2024-11-06 20:07:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:16,963 INFO L471 AbstractCegarLoop]: Abstraction has 68980 states and 72921 transitions. [2024-11-06 20:07:16,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 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 20:07:16,964 INFO L276 IsEmpty]: Start isEmpty. Operand 68980 states and 72921 transitions. [2024-11-06 20:07:17,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2024-11-06 20:07:17,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:17,010 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:07:17,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-06 20:07:17,011 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:17,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:17,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1020184031, now seen corresponding path program 1 times [2024-11-06 20:07:17,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:17,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44701161] [2024-11-06 20:07:17,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:17,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 1052 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2024-11-06 20:07:18,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:18,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44701161] [2024-11-06 20:07:18,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44701161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:18,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:18,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:07:18,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623667667] [2024-11-06 20:07:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:18,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:07:18,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:07:18,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:07:18,037 INFO L87 Difference]: Start difference. First operand 68980 states and 72921 transitions. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 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 20:07:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:20,392 INFO L93 Difference]: Finished difference Result 160100 states and 169351 transitions. [2024-11-06 20:07:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:20,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 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 990 [2024-11-06 20:07:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:20,496 INFO L225 Difference]: With dead ends: 160100 [2024-11-06 20:07:20,496 INFO L226 Difference]: Without dead ends: 91972 [2024-11-06 20:07:20,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:07:20,543 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 748 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:20,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 113 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 20:07:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91972 states. [2024-11-06 20:07:21,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91972 to 82608. [2024-11-06 20:07:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82608 states, 82607 states have (on average 1.0584817267301803) internal successors, (87438), 82607 states have internal predecessors, (87438), 0 states have call successors, (0), 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 20:07:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82608 states to 82608 states and 87438 transitions. [2024-11-06 20:07:21,673 INFO L78 Accepts]: Start accepts. Automaton has 82608 states and 87438 transitions. Word has length 990 [2024-11-06 20:07:21,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:21,674 INFO L471 AbstractCegarLoop]: Abstraction has 82608 states and 87438 transitions. [2024-11-06 20:07:21,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 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 20:07:21,674 INFO L276 IsEmpty]: Start isEmpty. Operand 82608 states and 87438 transitions. [2024-11-06 20:07:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2024-11-06 20:07:21,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:21,721 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:07:21,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-06 20:07:21,721 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:21,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:21,722 INFO L85 PathProgramCache]: Analyzing trace with hash 400301020, now seen corresponding path program 1 times [2024-11-06 20:07:21,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:21,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602863774] [2024-11-06 20:07:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:21,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 598 proven. 78 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2024-11-06 20:07:22,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:22,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602863774] [2024-11-06 20:07:22,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602863774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:07:22,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065776764] [2024-11-06 20:07:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:22,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:07:22,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:07:22,551 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 20:07:22,552 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 20:07:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:22,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 20:07:22,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:07:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 598 proven. 78 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2024-11-06 20:07:23,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 20:07:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2024-11-06 20:07:23,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065776764] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 20:07:23,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-06 20:07:23,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-06 20:07:23,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480558047] [2024-11-06 20:07:23,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:23,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:07:23,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:23,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:07:23,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:07:23,350 INFO L87 Difference]: Start difference. First operand 82608 states and 87438 transitions. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 20:07:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:07:25,558 INFO L93 Difference]: Finished difference Result 177573 states and 188138 transitions. [2024-11-06 20:07:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:07:25,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 1005 [2024-11-06 20:07:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:07:25,660 INFO L225 Difference]: With dead ends: 177573 [2024-11-06 20:07:25,660 INFO L226 Difference]: Without dead ends: 95817 [2024-11-06 20:07:25,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2011 GetRequests, 2007 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:07:25,710 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 783 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:07:25,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 143 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 20:07:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95817 states. [2024-11-06 20:07:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95817 to 91565. [2024-11-06 20:07:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91565 states, 91564 states have (on average 1.06024201651304) internal successors, (97080), 91564 states have internal predecessors, (97080), 0 states have call successors, (0), 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 20:07:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91565 states to 91565 states and 97080 transitions. [2024-11-06 20:07:26,835 INFO L78 Accepts]: Start accepts. Automaton has 91565 states and 97080 transitions. Word has length 1005 [2024-11-06 20:07:26,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:07:26,835 INFO L471 AbstractCegarLoop]: Abstraction has 91565 states and 97080 transitions. [2024-11-06 20:07:26,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 20:07:26,835 INFO L276 IsEmpty]: Start isEmpty. Operand 91565 states and 97080 transitions. [2024-11-06 20:07:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2024-11-06 20:07:26,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:07:26,887 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:07:26,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 20:07:27,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:07:27,088 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:07:27,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:07:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash 458632131, now seen corresponding path program 1 times [2024-11-06 20:07:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:07:27,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468533974] [2024-11-06 20:07:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:07:27,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:07:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:07:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 976 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-06 20:07:27,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:07:27,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468533974] [2024-11-06 20:07:27,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468533974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:07:27,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:07:27,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:07:27,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197969842] [2024-11-06 20:07:27,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:07:27,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:07:27,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:07:27,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:07:27,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:07:27,840 INFO L87 Difference]: Start difference. First operand 91565 states and 97080 transitions. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)