./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label13.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_label13.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', '84be5ebe7d0e17b7dfbf14426aab6d066d24416ef8e3b409c38a918132f4bf30'] 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_label13.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 84be5ebe7d0e17b7dfbf14426aab6d066d24416ef8e3b409c38a918132f4bf30 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 20:04:55,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 20:04:55,490 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 20:04:55,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 20:04:55,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 20:04:55,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 20:04:55,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 20:04:55,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 20:04:55,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 20:04:55,509 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 20:04:55,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 20:04:55,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 20:04:55,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 20:04:55,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 20:04:55,509 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 20:04:55,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 20:04:55,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 20:04:55,510 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 20:04:55,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 20:04:55,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 20:04:55,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 20:04:55,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 20:04:55,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:04:55,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 20:04:55,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 20:04:55,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 20:04:55,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 20:04:55,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 20:04:55,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 20:04:55,512 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 20:04:55,512 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 20:04:55,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 20:04:55,512 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 -> 84be5ebe7d0e17b7dfbf14426aab6d066d24416ef8e3b409c38a918132f4bf30 [2024-11-06 20:04:55,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 20:04:55,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 20:04:55,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 20:04:55,715 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 20:04:55,715 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 20:04:55,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label13.c [2024-11-06 20:04:56,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 20:04:57,335 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 20:04:57,335 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c [2024-11-06 20:04:57,358 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8bf505b94/130a262e5f254d70b275025af1b295b7/FLAGab7648135 [2024-11-06 20:04:57,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8bf505b94/130a262e5f254d70b275025af1b295b7 [2024-11-06 20:04:57,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 20:04:57,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 20:04:57,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 20:04:57,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 20:04:57,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 20:04:57,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:04:57" (1/1) ... [2024-11-06 20:04:57,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf7b804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:57, skipping insertion in model container [2024-11-06 20:04:57,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:04:57" (1/1) ... [2024-11-06 20:04:57,573 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 20:04:57,731 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_label13.c[4647,4660] [2024-11-06 20:04:58,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:04:58,076 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 20:04:58,089 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_label13.c[4647,4660] [2024-11-06 20:04:58,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:04:58,302 INFO L204 MainTranslator]: Completed translation [2024-11-06 20:04:58,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58 WrapperNode [2024-11-06 20:04:58,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 20:04:58,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 20:04:58,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 20:04:58,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 20:04:58,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:58,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:58,580 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-06 20:04:58,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 20:04:58,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 20:04:58,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 20:04:58,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 20:04:58,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:58,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:58,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:58,830 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 20:04:58,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:58,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:59,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:59,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:59,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:59,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:59,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 20:04:59,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 20:04:59,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 20:04:59,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 20:04:59,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (1/1) ... [2024-11-06 20:04:59,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:04:59,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:04:59,177 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 20:04:59,218 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 20:04:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 20:04:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 20:04:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 20:04:59,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 20:04:59,287 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 20:04:59,288 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 20:05:01,949 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-06 20:05:01,949 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 20:05:01,966 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 20:05:01,971 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 20:05:01,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:05:01 BoogieIcfgContainer [2024-11-06 20:05:01,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 20:05:01,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 20:05:01,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 20:05:01,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 20:05:01,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:04:57" (1/3) ... [2024-11-06 20:05:01,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501a5147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:05:01, skipping insertion in model container [2024-11-06 20:05:01,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:58" (2/3) ... [2024-11-06 20:05:01,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501a5147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:05:01, skipping insertion in model container [2024-11-06 20:05:01,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:05:01" (3/3) ... [2024-11-06 20:05:01,980 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label13.c [2024-11-06 20:05:01,991 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 20:05:01,991 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 20:05:02,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 20:05:02,097 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;@1c3293d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 20:05:02,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 20:05:02,104 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 20:05:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-06 20:05:02,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:02,112 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] [2024-11-06 20:05:02,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:02,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1722039382, now seen corresponding path program 1 times [2024-11-06 20:05:02,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:02,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019133572] [2024-11-06 20:05:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:02,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:02,414 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 20:05:02,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:02,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019133572] [2024-11-06 20:05:02,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019133572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:02,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:02,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:05:02,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372996768] [2024-11-06 20:05:02,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:02,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:02,433 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:04,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:04,524 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-06 20:05:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:04,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-11-06 20:05:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:04,536 INFO L225 Difference]: With dead ends: 1667 [2024-11-06 20:05:04,536 INFO L226 Difference]: Without dead ends: 998 [2024-11-06 20:05:04,540 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 20:05:04,542 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 515 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:04,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 20:05:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-06 20:05:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-06 20:05:04,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-06 20:05:04,596 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 30 [2024-11-06 20:05:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:04,597 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-06 20:05:04,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-06 20:05:04,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-06 20:05:04,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:04,599 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:05:04,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 20:05:04,599 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:04,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:04,600 INFO L85 PathProgramCache]: Analyzing trace with hash 673698151, now seen corresponding path program 1 times [2024-11-06 20:05:04,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:04,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436274943] [2024-11-06 20:05:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:04,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:05:04,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:04,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436274943] [2024-11-06 20:05:04,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436274943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:04,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:04,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:05:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939148165] [2024-11-06 20:05:04,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:04,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:04,825 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:06,698 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2024-11-06 20:05:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:06,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-06 20:05:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:06,705 INFO L225 Difference]: With dead ends: 2841 [2024-11-06 20:05:06,705 INFO L226 Difference]: Without dead ends: 1861 [2024-11-06 20:05:06,707 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 20:05:06,707 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:06,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 20:05:06,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-06 20:05:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2024-11-06 20:05:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2024-11-06 20:05:06,736 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 95 [2024-11-06 20:05:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:06,737 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2024-11-06 20:05:06,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2024-11-06 20:05:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-06 20:05:06,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:06,739 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:05:06,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 20:05:06,740 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:06,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:06,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2095642724, now seen corresponding path program 1 times [2024-11-06 20:05:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109062540] [2024-11-06 20:05:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:06,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:05:07,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:07,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109062540] [2024-11-06 20:05:07,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109062540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:07,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:07,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:05:07,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722257114] [2024-11-06 20:05:07,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:07,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:07,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:07,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:07,101 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:08,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:08,976 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2024-11-06 20:05:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:08,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2024-11-06 20:05:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:08,996 INFO L225 Difference]: With dead ends: 4591 [2024-11-06 20:05:08,996 INFO L226 Difference]: Without dead ends: 2736 [2024-11-06 20:05:08,998 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 20:05:08,999 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:08,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 20:05:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-06 20:05:09,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2024-11-06 20:05:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2024-11-06 20:05:09,077 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 135 [2024-11-06 20:05:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:09,078 INFO L471 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2024-11-06 20:05:09,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2024-11-06 20:05:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-06 20:05:09,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:09,080 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:05:09,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 20:05:09,080 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:09,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:09,083 INFO L85 PathProgramCache]: Analyzing trace with hash -767813459, now seen corresponding path program 1 times [2024-11-06 20:05:09,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:09,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789049206] [2024-11-06 20:05:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:09,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:05:09,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:09,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789049206] [2024-11-06 20:05:09,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789049206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:09,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:09,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:05:09,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33497968] [2024-11-06 20:05:09,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:09,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:09,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:09,352 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:10,936 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2024-11-06 20:05:10,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:10,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2024-11-06 20:05:10,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:10,952 INFO L225 Difference]: With dead ends: 6709 [2024-11-06 20:05:10,952 INFO L226 Difference]: Without dead ends: 3995 [2024-11-06 20:05:10,955 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 20:05:10,959 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 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, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:10,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:05:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-06 20:05:11,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2024-11-06 20:05:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2024-11-06 20:05:11,055 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 141 [2024-11-06 20:05:11,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:11,056 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2024-11-06 20:05:11,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2024-11-06 20:05:11,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-06 20:05:11,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:11,060 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:05:11,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 20:05:11,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:11,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash -513035753, now seen corresponding path program 1 times [2024-11-06 20:05:11,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:11,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837200256] [2024-11-06 20:05:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:11,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:05:11,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837200256] [2024-11-06 20:05:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837200256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:11,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:11,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 20:05:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040887575] [2024-11-06 20:05:11,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:11,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 20:05:11,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:11,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 20:05:11,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:05:11,355 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:13,466 INFO L93 Difference]: Finished difference Result 8005 states and 10508 transitions. [2024-11-06 20:05:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:05:13,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2024-11-06 20:05:13,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:13,480 INFO L225 Difference]: With dead ends: 8005 [2024-11-06 20:05:13,480 INFO L226 Difference]: Without dead ends: 4865 [2024-11-06 20:05:13,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:05:13,483 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1089 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:13,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 894 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 20:05:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2024-11-06 20:05:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4852. [2024-11-06 20:05:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2024-11-06 20:05:13,537 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 178 [2024-11-06 20:05:13,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:13,537 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2024-11-06 20:05:13,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2024-11-06 20:05:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-06 20:05:13,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:13,540 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 20:05:13,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 20:05:13,540 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:13,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash 185887176, now seen corresponding path program 1 times [2024-11-06 20:05:13,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:13,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93425599] [2024-11-06 20:05:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-06 20:05:13,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93425599] [2024-11-06 20:05:13,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93425599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:13,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:13,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:05:13,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713052189] [2024-11-06 20:05:13,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:13,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:13,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:13,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:13,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:13,658 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:15,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:15,260 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2024-11-06 20:05:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:15,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 184 [2024-11-06 20:05:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:15,281 INFO L225 Difference]: With dead ends: 12249 [2024-11-06 20:05:15,281 INFO L226 Difference]: Without dead ends: 7399 [2024-11-06 20:05:15,286 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 20:05:15,290 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 418 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:15,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:05:15,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2024-11-06 20:05:15,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2024-11-06 20:05:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2024-11-06 20:05:15,443 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 184 [2024-11-06 20:05:15,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:15,444 INFO L471 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2024-11-06 20:05:15,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2024-11-06 20:05:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-06 20:05:15,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:15,446 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:05:15,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 20:05:15,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:15,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash 416641564, now seen corresponding path program 1 times [2024-11-06 20:05:15,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:15,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396566038] [2024-11-06 20:05:15,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:15,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-06 20:05:15,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396566038] [2024-11-06 20:05:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396566038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:15,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:15,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:05:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031962013] [2024-11-06 20:05:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:15,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:15,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:15,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:15,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:15,587 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:17,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:17,513 INFO L93 Difference]: Finished difference Result 13486 states and 17137 transitions. [2024-11-06 20:05:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:17,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 197 [2024-11-06 20:05:17,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:17,541 INFO L225 Difference]: With dead ends: 13486 [2024-11-06 20:05:17,544 INFO L226 Difference]: Without dead ends: 7355 [2024-11-06 20:05:17,548 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 20:05:17,549 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 563 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:17,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 635 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 20:05:17,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2024-11-06 20:05:17,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 6499. [2024-11-06 20:05:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6499 states, 6498 states have (on average 1.1871345029239766) internal successors, (7714), 6498 states have internal predecessors, (7714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 7714 transitions. [2024-11-06 20:05:17,682 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 7714 transitions. Word has length 197 [2024-11-06 20:05:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:17,682 INFO L471 AbstractCegarLoop]: Abstraction has 6499 states and 7714 transitions. [2024-11-06 20:05:17,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:17,682 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 7714 transitions. [2024-11-06 20:05:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-06 20:05:17,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:17,685 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:05:17,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 20:05:17,685 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:17,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:17,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2139731954, now seen corresponding path program 1 times [2024-11-06 20:05:17,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:17,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112815811] [2024-11-06 20:05:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:17,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-06 20:05:17,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:17,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112815811] [2024-11-06 20:05:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112815811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:17,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:05:17,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609722358] [2024-11-06 20:05:17,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:17,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:17,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:17,849 INFO L87 Difference]: Start difference. First operand 6499 states and 7714 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:19,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:19,350 INFO L93 Difference]: Finished difference Result 14278 states and 16920 transitions. [2024-11-06 20:05:19,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:19,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 250 [2024-11-06 20:05:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:19,364 INFO L225 Difference]: With dead ends: 14278 [2024-11-06 20:05:19,364 INFO L226 Difference]: Without dead ends: 7781 [2024-11-06 20:05:19,370 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 20:05:19,370 INFO L432 NwaCegarLoop]: 759 mSDtfsCounter, 406 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:19,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 812 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:05:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2024-11-06 20:05:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 7351. [2024-11-06 20:05:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 7350 states have (on average 1.1794557823129252) internal successors, (8669), 7350 states have internal predecessors, (8669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 8669 transitions. [2024-11-06 20:05:19,485 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 8669 transitions. Word has length 250 [2024-11-06 20:05:19,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:19,486 INFO L471 AbstractCegarLoop]: Abstraction has 7351 states and 8669 transitions. [2024-11-06 20:05:19,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 8669 transitions. [2024-11-06 20:05:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-06 20:05:19,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:19,493 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-06 20:05:19,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 20:05:19,494 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:19,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1207693812, now seen corresponding path program 1 times [2024-11-06 20:05:19,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:19,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266294626] [2024-11-06 20:05:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:19,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-06 20:05:19,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:19,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266294626] [2024-11-06 20:05:19,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266294626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:19,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:19,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:05:19,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760654729] [2024-11-06 20:05:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:19,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:19,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:19,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:19,675 INFO L87 Difference]: Start difference. First operand 7351 states and 8669 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:20,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:20,984 INFO L93 Difference]: Finished difference Result 18527 states and 21831 transitions. [2024-11-06 20:05:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:20,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 268 [2024-11-06 20:05:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:21,034 INFO L225 Difference]: With dead ends: 18527 [2024-11-06 20:05:21,034 INFO L226 Difference]: Without dead ends: 11178 [2024-11-06 20:05:21,039 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 20:05:21,040 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 436 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:21,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 336 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 20:05:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11178 states. [2024-11-06 20:05:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11178 to 9900. [2024-11-06 20:05:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9900 states, 9899 states have (on average 1.1641579957571473) internal successors, (11524), 9899 states have internal predecessors, (11524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9900 states to 9900 states and 11524 transitions. [2024-11-06 20:05:21,117 INFO L78 Accepts]: Start accepts. Automaton has 9900 states and 11524 transitions. Word has length 268 [2024-11-06 20:05:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:21,117 INFO L471 AbstractCegarLoop]: Abstraction has 9900 states and 11524 transitions. [2024-11-06 20:05:21,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:21,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9900 states and 11524 transitions. [2024-11-06 20:05:21,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-06 20:05:21,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:21,124 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:05:21,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 20:05:21,125 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:21,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:21,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1810738291, now seen corresponding path program 1 times [2024-11-06 20:05:21,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:21,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6128365] [2024-11-06 20:05:21,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:21,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-06 20:05:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:21,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6128365] [2024-11-06 20:05:21,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6128365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:21,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:21,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:05:21,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051793417] [2024-11-06 20:05:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:21,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:05:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:05:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:05:21,449 INFO L87 Difference]: Start difference. First operand 9900 states and 11524 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:24,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:24,029 INFO L93 Difference]: Finished difference Result 31342 states and 36568 transitions. [2024-11-06 20:05:24,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:05:24,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 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 290 [2024-11-06 20:05:24,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:24,053 INFO L225 Difference]: With dead ends: 31342 [2024-11-06 20:05:24,054 INFO L226 Difference]: Without dead ends: 20165 [2024-11-06 20:05:24,062 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 20:05:24,065 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 873 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:24,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 241 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 20:05:24,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20165 states. [2024-11-06 20:05:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20165 to 18858. [2024-11-06 20:05:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18858 states, 18857 states have (on average 1.1585087765816409) internal successors, (21846), 18857 states have internal predecessors, (21846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18858 states to 18858 states and 21846 transitions. [2024-11-06 20:05:24,247 INFO L78 Accepts]: Start accepts. Automaton has 18858 states and 21846 transitions. Word has length 290 [2024-11-06 20:05:24,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:24,248 INFO L471 AbstractCegarLoop]: Abstraction has 18858 states and 21846 transitions. [2024-11-06 20:05:24,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 18858 states and 21846 transitions. [2024-11-06 20:05:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-11-06 20:05:24,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:24,253 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:05:24,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 20:05:24,254 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:24,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1792169996, now seen corresponding path program 1 times [2024-11-06 20:05:24,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:24,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024492280] [2024-11-06 20:05:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:24,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 198 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 20:05:24,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:24,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024492280] [2024-11-06 20:05:24,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024492280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:05:24,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067885463] [2024-11-06 20:05:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:24,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:05:24,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:05:24,875 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 20:05:24,882 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 20:05:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:25,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 20:05:25,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:05:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 155 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:05:25,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 20:05:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:05:25,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067885463] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 20:05:25,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-06 20:05:25,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-11-06 20:05:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484983778] [2024-11-06 20:05:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:25,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 20:05:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 20:05:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:05:25,857 INFO L87 Difference]: Start difference. First operand 18858 states and 21846 transitions. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:28,576 INFO L93 Difference]: Finished difference Result 56887 states and 65971 transitions. [2024-11-06 20:05:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 20:05:28,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 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 371 [2024-11-06 20:05:28,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:28,614 INFO L225 Difference]: With dead ends: 56887 [2024-11-06 20:05:28,614 INFO L226 Difference]: Without dead ends: 37181 [2024-11-06 20:05:28,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:05:28,633 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 1184 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:28,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 160 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 20:05:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37181 states. [2024-11-06 20:05:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37181 to 36745. [2024-11-06 20:05:29,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36745 states, 36744 states have (on average 1.1361582843457436) internal successors, (41747), 36744 states have internal predecessors, (41747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36745 states to 36745 states and 41747 transitions. [2024-11-06 20:05:29,193 INFO L78 Accepts]: Start accepts. Automaton has 36745 states and 41747 transitions. Word has length 371 [2024-11-06 20:05:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:29,193 INFO L471 AbstractCegarLoop]: Abstraction has 36745 states and 41747 transitions. [2024-11-06 20:05:29,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 36745 states and 41747 transitions. [2024-11-06 20:05:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-06 20:05:29,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:29,201 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:29,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 20:05:29,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-06 20:05:29,405 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:29,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:29,406 INFO L85 PathProgramCache]: Analyzing trace with hash 704014078, now seen corresponding path program 1 times [2024-11-06 20:05:29,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:29,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776106979] [2024-11-06 20:05:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:29,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 20:05:30,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776106979] [2024-11-06 20:05:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776106979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:05:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153861773] [2024-11-06 20:05:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:30,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:05:30,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:05:30,225 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 20:05:30,234 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 20:05:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:30,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 20:05:30,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:05:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 20:05:30,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 20:05:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 20:05:31,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153861773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 20:05:31,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 20:05:31,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-06 20:05:31,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751945351] [2024-11-06 20:05:31,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 20:05:31,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 20:05:31,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 20:05:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:05:31,937 INFO L87 Difference]: Start difference. First operand 36745 states and 41747 transitions. Second operand has 8 states, 8 states have (on average 95.625) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:38,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:38,112 INFO L93 Difference]: Finished difference Result 118664 states and 134593 transitions. [2024-11-06 20:05:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 20:05:38,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 95.625) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 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 414 [2024-11-06 20:05:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:38,192 INFO L225 Difference]: With dead ends: 118664 [2024-11-06 20:05:38,192 INFO L226 Difference]: Without dead ends: 81921 [2024-11-06 20:05:38,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 823 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-06 20:05:38,221 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 6170 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 7287 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6170 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 8204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 7287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:38,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6170 Valid, 356 Invalid, 8204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 7287 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-06 20:05:38,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81921 states. [2024-11-06 20:05:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81921 to 78063. [2024-11-06 20:05:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78063 states, 78062 states have (on average 1.1161128333888448) internal successors, (87126), 78062 states have internal predecessors, (87126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78063 states to 78063 states and 87126 transitions. [2024-11-06 20:05:38,931 INFO L78 Accepts]: Start accepts. Automaton has 78063 states and 87126 transitions. Word has length 414 [2024-11-06 20:05:38,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:38,932 INFO L471 AbstractCegarLoop]: Abstraction has 78063 states and 87126 transitions. [2024-11-06 20:05:38,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.625) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 78063 states and 87126 transitions. [2024-11-06 20:05:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-06 20:05:38,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:38,940 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2024-11-06 20:05:38,952 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 20:05:39,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:05:39,141 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:39,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 318019862, now seen corresponding path program 1 times [2024-11-06 20:05:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:39,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951873378] [2024-11-06 20:05:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-06 20:05:39,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:39,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951873378] [2024-11-06 20:05:39,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951873378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:39,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:39,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:05:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328388923] [2024-11-06 20:05:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:39,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:39,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:39,416 INFO L87 Difference]: Start difference. First operand 78063 states and 87126 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:40,818 INFO L93 Difference]: Finished difference Result 161224 states and 179983 transitions. [2024-11-06 20:05:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:40,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 475 [2024-11-06 20:05:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:40,917 INFO L225 Difference]: With dead ends: 161224 [2024-11-06 20:05:40,917 INFO L226 Difference]: Without dead ends: 84013 [2024-11-06 20:05:40,958 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 20:05:40,959 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 277 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:40,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 731 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-06 20:05:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84013 states. [2024-11-06 20:05:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84013 to 80188. [2024-11-06 20:05:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80188 states, 80187 states have (on average 1.1140708593662314) internal successors, (89334), 80187 states have internal predecessors, (89334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:41,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80188 states to 80188 states and 89334 transitions. [2024-11-06 20:05:41,973 INFO L78 Accepts]: Start accepts. Automaton has 80188 states and 89334 transitions. Word has length 475 [2024-11-06 20:05:41,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:41,974 INFO L471 AbstractCegarLoop]: Abstraction has 80188 states and 89334 transitions. [2024-11-06 20:05:41,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:41,974 INFO L276 IsEmpty]: Start isEmpty. Operand 80188 states and 89334 transitions. [2024-11-06 20:05:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2024-11-06 20:05:41,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:41,988 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:41,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 20:05:41,989 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:41,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:41,989 INFO L85 PathProgramCache]: Analyzing trace with hash -199318052, now seen corresponding path program 1 times [2024-11-06 20:05:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:41,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631176462] [2024-11-06 20:05:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:41,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-06 20:05:42,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:42,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631176462] [2024-11-06 20:05:42,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631176462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:42,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:42,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:05:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412722506] [2024-11-06 20:05:42,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:42,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:42,514 INFO L87 Difference]: Start difference. First operand 80188 states and 89334 transitions. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:43,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:43,995 INFO L93 Difference]: Finished difference Result 169336 states and 188803 transitions. [2024-11-06 20:05:43,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:43,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 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 542 [2024-11-06 20:05:43,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:44,095 INFO L225 Difference]: With dead ends: 169336 [2024-11-06 20:05:44,095 INFO L226 Difference]: Without dead ends: 89150 [2024-11-06 20:05:44,149 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 20:05:44,150 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 413 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:44,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 230 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-06 20:05:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89150 states. [2024-11-06 20:05:45,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89150 to 89141. [2024-11-06 20:05:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89141 states, 89140 states have (on average 1.110758357639668) internal successors, (99013), 89140 states have internal predecessors, (99013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89141 states to 89141 states and 99013 transitions. [2024-11-06 20:05:45,201 INFO L78 Accepts]: Start accepts. Automaton has 89141 states and 99013 transitions. Word has length 542 [2024-11-06 20:05:45,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:45,202 INFO L471 AbstractCegarLoop]: Abstraction has 89141 states and 99013 transitions. [2024-11-06 20:05:45,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 89141 states and 99013 transitions. [2024-11-06 20:05:45,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2024-11-06 20:05:45,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:45,218 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2024-11-06 20:05:45,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-06 20:05:45,219 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:45,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:45,223 INFO L85 PathProgramCache]: Analyzing trace with hash -920286702, now seen corresponding path program 1 times [2024-11-06 20:05:45,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:45,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783398262] [2024-11-06 20:05:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:45,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-11-06 20:05:45,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:45,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783398262] [2024-11-06 20:05:45,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783398262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:45,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:45,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:05:45,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754500861] [2024-11-06 20:05:45,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:45,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:45,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:45,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:45,378 INFO L87 Difference]: Start difference. First operand 89141 states and 99013 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:47,339 INFO L93 Difference]: Finished difference Result 195723 states and 216957 transitions. [2024-11-06 20:05:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:47,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 544 [2024-11-06 20:05:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:47,564 INFO L225 Difference]: With dead ends: 195723 [2024-11-06 20:05:47,565 INFO L226 Difference]: Without dead ends: 107009 [2024-11-06 20:05:47,649 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 20:05:47,649 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 485 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:47,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 644 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 20:05:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107009 states. [2024-11-06 20:05:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107009 to 106998. [2024-11-06 20:05:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106998 states, 106997 states have (on average 1.0891613783564025) internal successors, (116537), 106997 states have internal predecessors, (116537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106998 states to 106998 states and 116537 transitions. [2024-11-06 20:05:49,284 INFO L78 Accepts]: Start accepts. Automaton has 106998 states and 116537 transitions. Word has length 544 [2024-11-06 20:05:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:49,285 INFO L471 AbstractCegarLoop]: Abstraction has 106998 states and 116537 transitions. [2024-11-06 20:05:49,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:49,285 INFO L276 IsEmpty]: Start isEmpty. Operand 106998 states and 116537 transitions. [2024-11-06 20:05:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-11-06 20:05:49,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:49,305 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-06 20:05:49,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 20:05:49,305 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:49,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2018728974, now seen corresponding path program 1 times [2024-11-06 20:05:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:49,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71867469] [2024-11-06 20:05:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:49,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2024-11-06 20:05:50,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:50,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71867469] [2024-11-06 20:05:50,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71867469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:50,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:50,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:05:50,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978293713] [2024-11-06 20:05:50,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:50,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:05:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:50,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:05:50,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:05:50,170 INFO L87 Difference]: Start difference. First operand 106998 states and 116537 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:53,060 INFO L93 Difference]: Finished difference Result 238711 states and 259335 transitions. [2024-11-06 20:05:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:05:53,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 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 597 [2024-11-06 20:05:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:53,426 INFO L225 Difference]: With dead ends: 238711 [2024-11-06 20:05:53,426 INFO L226 Difference]: Without dead ends: 131290 [2024-11-06 20:05:53,463 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 20:05:53,464 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 832 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:53,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 148 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 20:05:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131290 states. [2024-11-06 20:05:54,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131290 to 118906. [2024-11-06 20:05:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118906 states, 118905 states have (on average 1.0874731928850763) internal successors, (129306), 118905 states have internal predecessors, (129306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118906 states to 118906 states and 129306 transitions. [2024-11-06 20:05:54,755 INFO L78 Accepts]: Start accepts. Automaton has 118906 states and 129306 transitions. Word has length 597 [2024-11-06 20:05:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:54,755 INFO L471 AbstractCegarLoop]: Abstraction has 118906 states and 129306 transitions. [2024-11-06 20:05:54,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:54,756 INFO L276 IsEmpty]: Start isEmpty. Operand 118906 states and 129306 transitions. [2024-11-06 20:05:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2024-11-06 20:05:54,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:54,780 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-06 20:05:54,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-06 20:05:54,780 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:54,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 618956926, now seen corresponding path program 1 times [2024-11-06 20:05:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:54,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965070400] [2024-11-06 20:05:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:54,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 754 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-06 20:05:55,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:55,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965070400] [2024-11-06 20:05:55,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965070400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:05:55,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:05:55,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:05:55,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466390447] [2024-11-06 20:05:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:05:55,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:05:55,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:05:55,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:05:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:05:55,352 INFO L87 Difference]: Start difference. First operand 118906 states and 129306 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:05:57,023 INFO L93 Difference]: Finished difference Result 255269 states and 278205 transitions. [2024-11-06 20:05:57,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:05:57,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 599 [2024-11-06 20:05:57,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:05:57,186 INFO L225 Difference]: With dead ends: 255269 [2024-11-06 20:05:57,186 INFO L226 Difference]: Without dead ends: 136790 [2024-11-06 20:05:57,266 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 20:05:57,266 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 266 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:05:57,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 265 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-06 20:05:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136790 states. [2024-11-06 20:05:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136790 to 126990. [2024-11-06 20:05:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126990 states, 126989 states have (on average 1.0804872863003883) internal successors, (137210), 126989 states have internal predecessors, (137210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126990 states to 126990 states and 137210 transitions. [2024-11-06 20:05:59,004 INFO L78 Accepts]: Start accepts. Automaton has 126990 states and 137210 transitions. Word has length 599 [2024-11-06 20:05:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:05:59,005 INFO L471 AbstractCegarLoop]: Abstraction has 126990 states and 137210 transitions. [2024-11-06 20:05:59,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:05:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 126990 states and 137210 transitions. [2024-11-06 20:05:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2024-11-06 20:05:59,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:05:59,021 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:59,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-06 20:05:59,021 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:05:59,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:05:59,022 INFO L85 PathProgramCache]: Analyzing trace with hash -267407460, now seen corresponding path program 1 times [2024-11-06 20:05:59,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:05:59,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012672447] [2024-11-06 20:05:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:05:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:05:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 738 proven. 175 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-06 20:05:59,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:05:59,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012672447] [2024-11-06 20:05:59,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012672447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:05:59,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347342801] [2024-11-06 20:05:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:05:59,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:05:59,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:05:59,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 20:05:59,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 20:06:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:00,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 20:06:00,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:06:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 913 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-06 20:06:00,495 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 20:06:00,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347342801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:00,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 20:06:00,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-06 20:06:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201364069] [2024-11-06 20:06:00,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:00,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:06:00,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:06:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:06:00,497 INFO L87 Difference]: Start difference. First operand 126990 states and 137210 transitions. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:02,800 INFO L93 Difference]: Finished difference Result 260368 states and 281173 transitions. [2024-11-06 20:06:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:06:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 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 613 [2024-11-06 20:06:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:02,947 INFO L225 Difference]: With dead ends: 260368 [2024-11-06 20:06:02,947 INFO L226 Difference]: Without dead ends: 133805 [2024-11-06 20:06:02,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:06:02,990 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 810 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:02,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 243 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 20:06:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133805 states. [2024-11-06 20:06:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133805 to 128701. [2024-11-06 20:06:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128701 states, 128700 states have (on average 1.0765423465423465) internal successors, (138551), 128700 states have internal predecessors, (138551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128701 states to 128701 states and 138551 transitions. [2024-11-06 20:06:04,530 INFO L78 Accepts]: Start accepts. Automaton has 128701 states and 138551 transitions. Word has length 613 [2024-11-06 20:06:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:04,531 INFO L471 AbstractCegarLoop]: Abstraction has 128701 states and 138551 transitions. [2024-11-06 20:06:04,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 128701 states and 138551 transitions. [2024-11-06 20:06:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2024-11-06 20:06:04,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:04,548 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:04,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 20:06:04,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:06:04,749 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:04,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:04,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2072969500, now seen corresponding path program 1 times [2024-11-06 20:06:04,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:04,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831380055] [2024-11-06 20:06:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:04,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 815 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-11-06 20:06:05,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:05,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831380055] [2024-11-06 20:06:05,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831380055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:05,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:05,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:06:05,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615303835] [2024-11-06 20:06:05,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:05,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:05,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:05,339 INFO L87 Difference]: Start difference. First operand 128701 states and 138551 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:07,245 INFO L93 Difference]: Finished difference Result 271063 states and 291897 transitions. [2024-11-06 20:06:07,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:07,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 641 [2024-11-06 20:06:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:07,429 INFO L225 Difference]: With dead ends: 271063 [2024-11-06 20:06:07,429 INFO L226 Difference]: Without dead ends: 142789 [2024-11-06 20:06:07,490 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 20:06:07,490 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 410 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:07,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 217 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 20:06:07,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142789 states. [2024-11-06 20:06:09,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142789 to 136788. [2024-11-06 20:06:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136788 states, 136787 states have (on average 1.075643153223625) internal successors, (147134), 136787 states have internal predecessors, (147134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136788 states to 136788 states and 147134 transitions. [2024-11-06 20:06:09,294 INFO L78 Accepts]: Start accepts. Automaton has 136788 states and 147134 transitions. Word has length 641 [2024-11-06 20:06:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:09,294 INFO L471 AbstractCegarLoop]: Abstraction has 136788 states and 147134 transitions. [2024-11-06 20:06:09,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 136788 states and 147134 transitions. [2024-11-06 20:06:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-06 20:06:09,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:09,317 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2024-11-06 20:06:09,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-06 20:06:09,317 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:09,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1597911280, now seen corresponding path program 1 times [2024-11-06 20:06:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673064464] [2024-11-06 20:06:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:09,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2024-11-06 20:06:09,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:09,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673064464] [2024-11-06 20:06:09,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673064464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:09,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:06:09,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:06:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461072457] [2024-11-06 20:06:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:09,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:06:09,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:06:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:06:09,744 INFO L87 Difference]: Start difference. First operand 136788 states and 147134 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:10,926 INFO L93 Difference]: Finished difference Result 243313 states and 261005 transitions. [2024-11-06 20:06:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:06:10,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 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 698 [2024-11-06 20:06:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:11,080 INFO L225 Difference]: With dead ends: 243313 [2024-11-06 20:06:11,081 INFO L226 Difference]: Without dead ends: 106951 [2024-11-06 20:06:11,151 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 20:06:11,152 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 564 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:11,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 73 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 20:06:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106951 states. [2024-11-06 20:06:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106951 to 106516. [2024-11-06 20:06:12,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106516 states, 106515 states have (on average 1.0686006665727832) internal successors, (113822), 106515 states have internal predecessors, (113822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106516 states to 106516 states and 113822 transitions. [2024-11-06 20:06:12,626 INFO L78 Accepts]: Start accepts. Automaton has 106516 states and 113822 transitions. Word has length 698 [2024-11-06 20:06:12,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:06:12,626 INFO L471 AbstractCegarLoop]: Abstraction has 106516 states and 113822 transitions. [2024-11-06 20:06:12,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:12,627 INFO L276 IsEmpty]: Start isEmpty. Operand 106516 states and 113822 transitions. [2024-11-06 20:06:12,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2024-11-06 20:06:12,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:06:12,654 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:06:12,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-06 20:06:12,655 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:06:12,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:06:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash 886167566, now seen corresponding path program 1 times [2024-11-06 20:06:12,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:06:12,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186085158] [2024-11-06 20:06:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:12,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:06:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 695 proven. 82 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-06 20:06:13,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:06:13,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186085158] [2024-11-06 20:06:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186085158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:06:13,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149339345] [2024-11-06 20:06:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:06:13,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:06:13,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:06:13,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 20:06:13,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 20:06:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:06:14,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 20:06:14,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:06:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 1043 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-06 20:06:18,088 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 20:06:18,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149339345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:06:18,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 20:06:18,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2024-11-06 20:06:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665318016] [2024-11-06 20:06:18,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:06:18,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 20:06:18,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:06:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 20:06:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 20:06:18,089 INFO L87 Difference]: Start difference. First operand 106516 states and 113822 transitions. Second operand has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:06:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:06:22,229 INFO L93 Difference]: Finished difference Result 221539 states and 236606 transitions. [2024-11-06 20:06:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 20:06:22,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 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 705 [2024-11-06 20:06:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:06:22,358 INFO L225 Difference]: With dead ends: 221539 [2024-11-06 20:06:22,359 INFO L226 Difference]: Without dead ends: 115450 [2024-11-06 20:06:22,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 20:06:22,426 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 1158 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4075 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 4373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 4075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:06:22,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 279 Invalid, 4373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 4075 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-06 20:06:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115450 states.