./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem18_label50.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/Problem18_label50.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', '2860c4517fecc40ae408a746c354ae76653cd3eedc93173f87dfd23f49daad5e'] 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/Problem18_label50.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 2860c4517fecc40ae408a746c354ae76653cd3eedc93173f87dfd23f49daad5e --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 20:14:40,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 20:14:41,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 20:14:41,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 20:14:41,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 20:14:41,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 20:14:41,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 20:14:41,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 20:14:41,074 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 20:14:41,074 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 20:14:41,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 20:14:41,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 20:14:41,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 20:14:41,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 20:14:41,075 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 20:14:41,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 20:14:41,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 20:14:41,076 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 20:14:41,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 20:14:41,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 20:14:41,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 20:14:41,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 20:14:41,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 20:14:41,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 20:14:41,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 20:14:41,078 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 20:14:41,078 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 20:14:41,078 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 20:14:41,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 20:14:41,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 20:14:41,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 20:14:41,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 20:14:41,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:14:41,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 20:14:41,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 20:14:41,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 20:14:41,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 20:14:41,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 20:14:41,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 20:14:41,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 20:14:41,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 20:14:41,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 20:14:41,081 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 -> 2860c4517fecc40ae408a746c354ae76653cd3eedc93173f87dfd23f49daad5e [2024-11-06 20:14:41,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 20:14:41,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 20:14:41,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 20:14:41,342 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 20:14:41,342 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 20:14:41,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label50.c [2024-11-06 20:14:42,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 20:14:42,930 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 20:14:42,932 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label50.c [2024-11-06 20:14:42,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24baa7fd3/c71c6c940aba47e8bfb28a22d7d8faae/FLAGe6ecdf95f [2024-11-06 20:14:43,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24baa7fd3/c71c6c940aba47e8bfb28a22d7d8faae [2024-11-06 20:14:43,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 20:14:43,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 20:14:43,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 20:14:43,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 20:14:43,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 20:14:43,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:14:43" (1/1) ... [2024-11-06 20:14:43,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f170f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:43, skipping insertion in model container [2024-11-06 20:14:43,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:14:43" (1/1) ... [2024-11-06 20:14:43,218 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 20:14:43,406 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/Problem18_label50.c[6561,6574] [2024-11-06 20:14:43,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:14:43,858 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 20:14:43,879 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/Problem18_label50.c[6561,6574] [2024-11-06 20:14:44,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:14:44,161 INFO L204 MainTranslator]: Completed translation [2024-11-06 20:14:44,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44 WrapperNode [2024-11-06 20:14:44,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 20:14:44,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 20:14:44,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 20:14:44,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 20:14:44,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,423 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2024-11-06 20:14:44,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 20:14:44,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 20:14:44,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 20:14:44,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 20:14:44,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,594 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 20:14:44,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 20:14:44,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 20:14:44,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 20:14:44,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 20:14:44,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (1/1) ... [2024-11-06 20:14:44,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:14:44,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:14:44,868 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 20:14:44,878 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 20:14:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 20:14:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 20:14:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 20:14:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 20:14:44,978 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 20:14:44,980 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 20:14:48,311 INFO L? ?]: Removed 639 outVars from TransFormulas that were not future-live. [2024-11-06 20:14:48,315 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 20:14:48,364 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 20:14:48,368 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 20:14:48,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:14:48 BoogieIcfgContainer [2024-11-06 20:14:48,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 20:14:48,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 20:14:48,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 20:14:48,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 20:14:48,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:14:43" (1/3) ... [2024-11-06 20:14:48,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149bf78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:14:48, skipping insertion in model container [2024-11-06 20:14:48,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:44" (2/3) ... [2024-11-06 20:14:48,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149bf78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:14:48, skipping insertion in model container [2024-11-06 20:14:48,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:14:48" (3/3) ... [2024-11-06 20:14:48,378 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label50.c [2024-11-06 20:14:48,392 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 20:14:48,392 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 20:14:48,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 20:14:48,515 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;@12750970, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 20:14:48,515 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 20:14:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-06 20:14:48,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:14:48,541 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:14:48,542 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:14:48,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:14:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2024-11-06 20:14:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:14:48,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584286920] [2024-11-06 20:14:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:14:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:14:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:14:48,953 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 20:14:48,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:14:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584286920] [2024-11-06 20:14:48,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584286920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:14:48,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:14:48,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:14:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015695696] [2024-11-06 20:14:48,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:14:48,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:14:48,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:14:48,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:14:48,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:14:48,985 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:14:52,120 INFO L93 Difference]: Finished difference Result 2221 states and 4282 transitions. [2024-11-06 20:14:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:14:52,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-11-06 20:14:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:14:52,136 INFO L225 Difference]: With dead ends: 2221 [2024-11-06 20:14:52,136 INFO L226 Difference]: Without dead ends: 1384 [2024-11-06 20:14:52,141 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 20:14:52,144 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 732 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-06 20:14:52,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 487 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-06 20:14:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2024-11-06 20:14:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2024-11-06 20:14:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.5994215473608098) internal successors, (2212), 1383 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2212 transitions. [2024-11-06 20:14:52,223 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2212 transitions. Word has length 63 [2024-11-06 20:14:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:14:52,223 INFO L471 AbstractCegarLoop]: Abstraction has 1384 states and 2212 transitions. [2024-11-06 20:14:52,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2212 transitions. [2024-11-06 20:14:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-06 20:14:52,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:14:52,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:14:52,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 20:14:52,227 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:14:52,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:14:52,228 INFO L85 PathProgramCache]: Analyzing trace with hash 928891202, now seen corresponding path program 1 times [2024-11-06 20:14:52,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:14:52,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323724391] [2024-11-06 20:14:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:14:52,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:14:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:14:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:14:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:14:52,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323724391] [2024-11-06 20:14:52,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323724391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:14:52,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:14:52,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:14:52,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711498851] [2024-11-06 20:14:52,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:14:52,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:14:52,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:14:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:14:52,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:14:52,499 INFO L87 Difference]: Start difference. First operand 1384 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:54,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:14:54,959 INFO L93 Difference]: Finished difference Result 4146 states and 6631 transitions. [2024-11-06 20:14:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:14:54,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2024-11-06 20:14:54,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:14:54,970 INFO L225 Difference]: With dead ends: 4146 [2024-11-06 20:14:54,971 INFO L226 Difference]: Without dead ends: 2764 [2024-11-06 20:14:54,973 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 20:14:54,974 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:14:54,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 529 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 20:14:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2024-11-06 20:14:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2024-11-06 20:14:55,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.3503438291711907) internal successors, (3731), 2763 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3731 transitions. [2024-11-06 20:14:55,103 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3731 transitions. Word has length 128 [2024-11-06 20:14:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:14:55,103 INFO L471 AbstractCegarLoop]: Abstraction has 2764 states and 3731 transitions. [2024-11-06 20:14:55,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3731 transitions. [2024-11-06 20:14:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-06 20:14:55,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:14:55,118 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 20:14:55,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 20:14:55,118 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:14:55,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:14:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1882009590, now seen corresponding path program 1 times [2024-11-06 20:14:55,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:14:55,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269708844] [2024-11-06 20:14:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:14:55,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:14:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:14:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-06 20:14:55,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:14:55,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269708844] [2024-11-06 20:14:55,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269708844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:14:55,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:14:55,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:14:55,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981263088] [2024-11-06 20:14:55,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:14:55,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:14:55,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:14:55,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:14:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:14:55,907 INFO L87 Difference]: Start difference. First operand 2764 states and 3731 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:14:59,153 INFO L93 Difference]: Finished difference Result 7596 states and 9794 transitions. [2024-11-06 20:14:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:14:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 246 [2024-11-06 20:14:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:14:59,172 INFO L225 Difference]: With dead ends: 7596 [2024-11-06 20:14:59,173 INFO L226 Difference]: Without dead ends: 4834 [2024-11-06 20:14:59,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 20:14:59,177 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 1873 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:14:59,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 641 Invalid, 4465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-06 20:14:59,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2024-11-06 20:14:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4144. [2024-11-06 20:14:59,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.2698527636978034) internal successors, (5261), 4143 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5261 transitions. [2024-11-06 20:14:59,246 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5261 transitions. Word has length 246 [2024-11-06 20:14:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:14:59,246 INFO L471 AbstractCegarLoop]: Abstraction has 4144 states and 5261 transitions. [2024-11-06 20:14:59,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:14:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5261 transitions. [2024-11-06 20:14:59,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-06 20:14:59,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:14:59,251 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:59,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 20:14:59,251 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:14:59,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:14:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash -906042740, now seen corresponding path program 1 times [2024-11-06 20:14:59,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:14:59,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901087227] [2024-11-06 20:14:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:14:59,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:14:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:14:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:14:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:14:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901087227] [2024-11-06 20:14:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901087227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:14:59,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:14:59,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:14:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026935409] [2024-11-06 20:14:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:14:59,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:14:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:14:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:14:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:14:59,770 INFO L87 Difference]: Start difference. First operand 4144 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:01,797 INFO L93 Difference]: Finished difference Result 12426 states and 15778 transitions. [2024-11-06 20:15:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:01,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 362 [2024-11-06 20:15:01,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:01,824 INFO L225 Difference]: With dead ends: 12426 [2024-11-06 20:15:01,824 INFO L226 Difference]: Without dead ends: 8284 [2024-11-06 20:15:01,830 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 20:15:01,832 INFO L432 NwaCegarLoop]: 817 mSDtfsCounter, 643 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:01,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 824 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-06 20:15:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2024-11-06 20:15:01,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8284. [2024-11-06 20:15:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8284 states, 8283 states have (on average 1.2472534106000241) internal successors, (10331), 8283 states have internal predecessors, (10331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 10331 transitions. [2024-11-06 20:15:01,973 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 10331 transitions. Word has length 362 [2024-11-06 20:15:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:01,976 INFO L471 AbstractCegarLoop]: Abstraction has 8284 states and 10331 transitions. [2024-11-06 20:15:01,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 10331 transitions. [2024-11-06 20:15:01,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-06 20:15:01,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:01,982 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:01,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 20:15:01,983 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:01,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:01,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1772964099, now seen corresponding path program 1 times [2024-11-06 20:15:01,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:01,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866325900] [2024-11-06 20:15:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:01,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-06 20:15:02,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:02,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866325900] [2024-11-06 20:15:02,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866325900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:15:02,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227501062] [2024-11-06 20:15:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:02,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:15:02,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:15:02,646 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 20:15:02,648 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 20:15:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:02,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 20:15:02,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:15:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 20:15:03,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 20:15:03,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227501062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:03,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 20:15:03,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-06 20:15:03,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049453030] [2024-11-06 20:15:03,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:03,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:03,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:03,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:15:03,356 INFO L87 Difference]: Start difference. First operand 8284 states and 10331 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:05,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:05,629 INFO L93 Difference]: Finished difference Result 24156 states and 30160 transitions. [2024-11-06 20:15:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:05,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 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 369 [2024-11-06 20:15:05,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:05,667 INFO L225 Difference]: With dead ends: 24156 [2024-11-06 20:15:05,667 INFO L226 Difference]: Without dead ends: 15874 [2024-11-06 20:15:05,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:15:05,678 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 391 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:05,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 550 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 20:15:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15874 states. [2024-11-06 20:15:05,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15874 to 12424. [2024-11-06 20:15:05,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 1.231023102310231) internal successors, (15293), 12423 states have internal predecessors, (15293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 15293 transitions. [2024-11-06 20:15:05,929 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 15293 transitions. Word has length 369 [2024-11-06 20:15:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:05,931 INFO L471 AbstractCegarLoop]: Abstraction has 12424 states and 15293 transitions. [2024-11-06 20:15:05,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 15293 transitions. [2024-11-06 20:15:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-11-06 20:15:05,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:05,943 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:05,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 20:15:06,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:15:06,144 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:06,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash -717153331, now seen corresponding path program 1 times [2024-11-06 20:15:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473223149] [2024-11-06 20:15:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:15:06,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473223149] [2024-11-06 20:15:06,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473223149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:06,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:06,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:15:06,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369440165] [2024-11-06 20:15:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:06,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:15:06,755 INFO L87 Difference]: Start difference. First operand 12424 states and 15293 transitions. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:08,995 INFO L93 Difference]: Finished difference Result 31056 states and 38078 transitions. [2024-11-06 20:15:08,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 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 455 [2024-11-06 20:15:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:09,041 INFO L225 Difference]: With dead ends: 31056 [2024-11-06 20:15:09,042 INFO L226 Difference]: Without dead ends: 18634 [2024-11-06 20:15:09,056 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 20:15:09,058 INFO L432 NwaCegarLoop]: 1070 mSDtfsCounter, 600 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:09,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1077 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 20:15:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2024-11-06 20:15:09,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 17944. [2024-11-06 20:15:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17944 states, 17943 states have (on average 1.1940589644986903) internal successors, (21425), 17943 states have internal predecessors, (21425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17944 states to 17944 states and 21425 transitions. [2024-11-06 20:15:09,295 INFO L78 Accepts]: Start accepts. Automaton has 17944 states and 21425 transitions. Word has length 455 [2024-11-06 20:15:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:09,296 INFO L471 AbstractCegarLoop]: Abstraction has 17944 states and 21425 transitions. [2024-11-06 20:15:09,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 17944 states and 21425 transitions. [2024-11-06 20:15:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-06 20:15:09,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:09,306 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:09,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 20:15:09,306 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:09,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1352129710, now seen corresponding path program 1 times [2024-11-06 20:15:09,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:09,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613675031] [2024-11-06 20:15:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:09,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-06 20:15:09,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:09,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613675031] [2024-11-06 20:15:09,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613675031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:09,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:09,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:15:09,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540751203] [2024-11-06 20:15:09,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:09,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:09,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:09,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:09,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:15:09,645 INFO L87 Difference]: Start difference. First operand 17944 states and 21425 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:11,741 INFO L93 Difference]: Finished difference Result 42786 states and 50792 transitions. [2024-11-06 20:15:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:11,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 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 460 [2024-11-06 20:15:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:11,837 INFO L225 Difference]: With dead ends: 42786 [2024-11-06 20:15:11,838 INFO L226 Difference]: Without dead ends: 24844 [2024-11-06 20:15:11,859 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 20:15:11,864 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 499 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:11,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 109 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 20:15:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24844 states. [2024-11-06 20:15:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24844 to 24844. [2024-11-06 20:15:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24844 states, 24843 states have (on average 1.1503039085456668) internal successors, (28577), 24843 states have internal predecessors, (28577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24844 states to 24844 states and 28577 transitions. [2024-11-06 20:15:12,235 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 28577 transitions. Word has length 460 [2024-11-06 20:15:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:12,235 INFO L471 AbstractCegarLoop]: Abstraction has 24844 states and 28577 transitions. [2024-11-06 20:15:12,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 28577 transitions. [2024-11-06 20:15:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-06 20:15:12,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:12,241 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:12,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 20:15:12,242 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:12,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash 610570492, now seen corresponding path program 1 times [2024-11-06 20:15:12,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:12,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294910286] [2024-11-06 20:15:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:12,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-06 20:15:12,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:12,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294910286] [2024-11-06 20:15:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294910286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:12,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:12,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:15:12,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534111915] [2024-11-06 20:15:12,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:12,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:12,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:12,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:15:12,520 INFO L87 Difference]: Start difference. First operand 24844 states and 28577 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 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 20:15:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:14,869 INFO L93 Difference]: Finished difference Result 53826 states and 62398 transitions. [2024-11-06 20:15:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 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 462 [2024-11-06 20:15:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:14,916 INFO L225 Difference]: With dead ends: 53826 [2024-11-06 20:15:14,917 INFO L226 Difference]: Without dead ends: 28984 [2024-11-06 20:15:14,935 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 20:15:14,936 INFO L432 NwaCegarLoop]: 1292 mSDtfsCounter, 641 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:14,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1299 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 20:15:14,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28984 states. [2024-11-06 20:15:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28984 to 27604. [2024-11-06 20:15:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27604 states, 27603 states have (on average 1.143317755316451) internal successors, (31559), 27603 states have internal predecessors, (31559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27604 states to 27604 states and 31559 transitions. [2024-11-06 20:15:15,383 INFO L78 Accepts]: Start accepts. Automaton has 27604 states and 31559 transitions. Word has length 462 [2024-11-06 20:15:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:15,385 INFO L471 AbstractCegarLoop]: Abstraction has 27604 states and 31559 transitions. [2024-11-06 20:15:15,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 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 20:15:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 27604 states and 31559 transitions. [2024-11-06 20:15:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2024-11-06 20:15:15,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:15,394 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:15,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 20:15:15,394 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:15,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:15,395 INFO L85 PathProgramCache]: Analyzing trace with hash 842142857, now seen corresponding path program 1 times [2024-11-06 20:15:15,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:15,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823163853] [2024-11-06 20:15:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:15,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-06 20:15:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:16,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823163853] [2024-11-06 20:15:16,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823163853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:16,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:16,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:15:16,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853867748] [2024-11-06 20:15:16,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:16,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:16,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:15:16,137 INFO L87 Difference]: Start difference. First operand 27604 states and 31559 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:18,589 INFO L93 Difference]: Finished difference Result 64176 states and 74122 transitions. [2024-11-06 20:15:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:18,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 552 [2024-11-06 20:15:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:18,638 INFO L225 Difference]: With dead ends: 64176 [2024-11-06 20:15:18,638 INFO L226 Difference]: Without dead ends: 33124 [2024-11-06 20:15:18,665 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 20:15:18,666 INFO L432 NwaCegarLoop]: 1311 mSDtfsCounter, 631 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:18,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1318 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-06 20:15:18,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33124 states. [2024-11-06 20:15:19,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33124 to 32434. [2024-11-06 20:15:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32434 states, 32433 states have (on average 1.1341534856473345) internal successors, (36784), 32433 states have internal predecessors, (36784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32434 states to 32434 states and 36784 transitions. [2024-11-06 20:15:19,075 INFO L78 Accepts]: Start accepts. Automaton has 32434 states and 36784 transitions. Word has length 552 [2024-11-06 20:15:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:19,075 INFO L471 AbstractCegarLoop]: Abstraction has 32434 states and 36784 transitions. [2024-11-06 20:15:19,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 32434 states and 36784 transitions. [2024-11-06 20:15:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-11-06 20:15:19,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:19,085 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:19,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 20:15:19,085 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:19,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash -985952299, now seen corresponding path program 1 times [2024-11-06 20:15:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:19,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002284044] [2024-11-06 20:15:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-06 20:15:19,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002284044] [2024-11-06 20:15:19,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002284044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:19,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:19,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:15:19,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548828784] [2024-11-06 20:15:19,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:19,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:15:19,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:19,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:15:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:15:19,543 INFO L87 Difference]: Start difference. First operand 32434 states and 36784 transitions. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:21,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:21,602 INFO L93 Difference]: Finished difference Result 66299 states and 75023 transitions. [2024-11-06 20:15:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:15:21,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 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 573 [2024-11-06 20:15:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:21,633 INFO L225 Difference]: With dead ends: 66299 [2024-11-06 20:15:21,633 INFO L226 Difference]: Without dead ends: 34504 [2024-11-06 20:15:21,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:15:21,657 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 513 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:21,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 629 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 20:15:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34504 states. [2024-11-06 20:15:21,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34504 to 34504. [2024-11-06 20:15:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34504 states, 34503 states have (on average 1.0967162275744138) internal successors, (37840), 34503 states have internal predecessors, (37840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34504 states to 34504 states and 37840 transitions. [2024-11-06 20:15:22,041 INFO L78 Accepts]: Start accepts. Automaton has 34504 states and 37840 transitions. Word has length 573 [2024-11-06 20:15:22,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:22,041 INFO L471 AbstractCegarLoop]: Abstraction has 34504 states and 37840 transitions. [2024-11-06 20:15:22,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 34504 states and 37840 transitions. [2024-11-06 20:15:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2024-11-06 20:15:22,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:22,049 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 20:15:22,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 20:15:22,049 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:22,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash 558221884, now seen corresponding path program 1 times [2024-11-06 20:15:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:22,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808333537] [2024-11-06 20:15:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-06 20:15:22,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:22,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808333537] [2024-11-06 20:15:22,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808333537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:22,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:22,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:15:22,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993032240] [2024-11-06 20:15:22,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:22,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:15:22,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:22,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:15:22,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:15:22,727 INFO L87 Difference]: Start difference. First operand 34504 states and 37840 transitions. Second operand has 4 states, 4 states have (on average 142.0) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:25,435 INFO L93 Difference]: Finished difference Result 69006 states and 75703 transitions. [2024-11-06 20:15:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:15:25,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 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 628 [2024-11-06 20:15:25,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:25,466 INFO L225 Difference]: With dead ends: 69006 [2024-11-06 20:15:25,466 INFO L226 Difference]: Without dead ends: 35194 [2024-11-06 20:15:25,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:15:25,476 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 1422 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:25,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 97 Invalid, 3767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 3046 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 20:15:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35194 states. [2024-11-06 20:15:25,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35194 to 35194. [2024-11-06 20:15:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35194 states, 35193 states have (on average 1.07848151621061) internal successors, (37955), 35193 states have internal predecessors, (37955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35194 states to 35194 states and 37955 transitions. [2024-11-06 20:15:25,737 INFO L78 Accepts]: Start accepts. Automaton has 35194 states and 37955 transitions. Word has length 628 [2024-11-06 20:15:25,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:25,738 INFO L471 AbstractCegarLoop]: Abstraction has 35194 states and 37955 transitions. [2024-11-06 20:15:25,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 35194 states and 37955 transitions. [2024-11-06 20:15:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1149 [2024-11-06 20:15:25,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:25,751 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:25,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 20:15:25,751 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:25,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1917091075, now seen corresponding path program 1 times [2024-11-06 20:15:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:25,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332407152] [2024-11-06 20:15:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:25,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2024-11-06 20:15:27,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:27,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332407152] [2024-11-06 20:15:27,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332407152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:27,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:27,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:15:27,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714774582] [2024-11-06 20:15:27,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:27,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:27,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:27,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:27,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:15:27,183 INFO L87 Difference]: Start difference. First operand 35194 states and 37955 transitions. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:29,080 INFO L93 Difference]: Finished difference Result 77286 states and 83940 transitions. [2024-11-06 20:15:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:29,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 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 1148 [2024-11-06 20:15:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:29,124 INFO L225 Difference]: With dead ends: 77286 [2024-11-06 20:15:29,124 INFO L226 Difference]: Without dead ends: 42784 [2024-11-06 20:15:29,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 20:15:29,149 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 698 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:29,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 96 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 20:15:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42784 states. [2024-11-06 20:15:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42784 to 39334. [2024-11-06 20:15:29,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39334 states, 39333 states have (on average 1.0903058500495766) internal successors, (42885), 39333 states have internal predecessors, (42885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39334 states to 39334 states and 42885 transitions. [2024-11-06 20:15:29,562 INFO L78 Accepts]: Start accepts. Automaton has 39334 states and 42885 transitions. Word has length 1148 [2024-11-06 20:15:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:29,563 INFO L471 AbstractCegarLoop]: Abstraction has 39334 states and 42885 transitions. [2024-11-06 20:15:29,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 39334 states and 42885 transitions. [2024-11-06 20:15:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2024-11-06 20:15:29,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:29,590 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:29,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 20:15:29,590 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:29,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1545847230, now seen corresponding path program 1 times [2024-11-06 20:15:29,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:29,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188318260] [2024-11-06 20:15:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:29,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-11-06 20:15:30,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:30,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188318260] [2024-11-06 20:15:30,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188318260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:30,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:30,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:15:30,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283614584] [2024-11-06 20:15:30,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:30,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:30,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:30,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:15:30,952 INFO L87 Difference]: Start difference. First operand 39334 states and 42885 transitions. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:32,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:32,816 INFO L93 Difference]: Finished difference Result 77976 states and 85077 transitions. [2024-11-06 20:15:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:32,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 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 1211 [2024-11-06 20:15:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:32,855 INFO L225 Difference]: With dead ends: 77976 [2024-11-06 20:15:32,856 INFO L226 Difference]: Without dead ends: 39334 [2024-11-06 20:15:32,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 20:15:32,870 INFO L432 NwaCegarLoop]: 773 mSDtfsCounter, 734 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:32,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 780 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-06 20:15:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39334 states. [2024-11-06 20:15:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39334 to 39334. [2024-11-06 20:15:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39334 states, 39333 states have (on average 1.0779498131340095) internal successors, (42399), 39333 states have internal predecessors, (42399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39334 states to 39334 states and 42399 transitions. [2024-11-06 20:15:33,174 INFO L78 Accepts]: Start accepts. Automaton has 39334 states and 42399 transitions. Word has length 1211 [2024-11-06 20:15:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:33,175 INFO L471 AbstractCegarLoop]: Abstraction has 39334 states and 42399 transitions. [2024-11-06 20:15:33,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 39334 states and 42399 transitions. [2024-11-06 20:15:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1511 [2024-11-06 20:15:33,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:33,204 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:33,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 20:15:33,205 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:33,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:33,205 INFO L85 PathProgramCache]: Analyzing trace with hash 286545695, now seen corresponding path program 1 times [2024-11-06 20:15:33,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:33,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808530924] [2024-11-06 20:15:33,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:33,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 703 proven. 1236 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-06 20:15:35,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:35,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808530924] [2024-11-06 20:15:35,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808530924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:15:35,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894095647] [2024-11-06 20:15:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:35,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:15:35,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:15:35,476 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 20:15:35,478 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 20:15:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:35,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 20:15:35,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:15:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1235 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2024-11-06 20:15:36,320 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 20:15:36,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894095647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:36,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 20:15:36,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-06 20:15:36,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619933941] [2024-11-06 20:15:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:36,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:36,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:36,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:15:36,324 INFO L87 Difference]: Start difference. First operand 39334 states and 42399 transitions. Second operand has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:38,139 INFO L93 Difference]: Finished difference Result 91086 states and 99006 transitions. [2024-11-06 20:15:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:38,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 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 1510 [2024-11-06 20:15:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:38,195 INFO L225 Difference]: With dead ends: 91086 [2024-11-06 20:15:38,195 INFO L226 Difference]: Without dead ends: 52444 [2024-11-06 20:15:38,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1516 GetRequests, 1510 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:15:38,221 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 343 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:38,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 222 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 20:15:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52444 states. [2024-11-06 20:15:38,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52444 to 51754. [2024-11-06 20:15:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51754 states, 51753 states have (on average 1.0748748864800108) internal successors, (55628), 51753 states have internal predecessors, (55628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51754 states to 51754 states and 55628 transitions. [2024-11-06 20:15:38,612 INFO L78 Accepts]: Start accepts. Automaton has 51754 states and 55628 transitions. Word has length 1510 [2024-11-06 20:15:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:38,612 INFO L471 AbstractCegarLoop]: Abstraction has 51754 states and 55628 transitions. [2024-11-06 20:15:38,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand 51754 states and 55628 transitions. [2024-11-06 20:15:38,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1529 [2024-11-06 20:15:38,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:38,640 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, 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, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:38,653 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 20:15:38,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:15:38,840 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:38,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:38,841 INFO L85 PathProgramCache]: Analyzing trace with hash 42303698, now seen corresponding path program 1 times [2024-11-06 20:15:38,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:38,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241090083] [2024-11-06 20:15:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:38,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 1573 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2024-11-06 20:15:39,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:39,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241090083] [2024-11-06 20:15:39,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241090083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:39,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:39,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:15:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540848622] [2024-11-06 20:15:39,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:39,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:39,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:39,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:39,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:15:39,800 INFO L87 Difference]: Start difference. First operand 51754 states and 55628 transitions. Second operand has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:41,909 INFO L93 Difference]: Finished difference Result 125586 states and 135636 transitions. [2024-11-06 20:15:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:41,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 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 1528 [2024-11-06 20:15:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:41,975 INFO L225 Difference]: With dead ends: 125586 [2024-11-06 20:15:41,975 INFO L226 Difference]: Without dead ends: 74524 [2024-11-06 20:15:42,007 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 20:15:42,007 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 667 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:42,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 312 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 1902 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 20:15:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74524 states. [2024-11-06 20:15:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74524 to 73834. [2024-11-06 20:15:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73834 states, 73833 states have (on average 1.0705375645036772) internal successors, (79041), 73833 states have internal predecessors, (79041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73834 states to 73834 states and 79041 transitions. [2024-11-06 20:15:42,842 INFO L78 Accepts]: Start accepts. Automaton has 73834 states and 79041 transitions. Word has length 1528 [2024-11-06 20:15:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:42,843 INFO L471 AbstractCegarLoop]: Abstraction has 73834 states and 79041 transitions. [2024-11-06 20:15:42,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 73834 states and 79041 transitions. [2024-11-06 20:15:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1633 [2024-11-06 20:15:42,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:42,894 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, 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, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:42,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 20:15:42,894 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:42,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:42,895 INFO L85 PathProgramCache]: Analyzing trace with hash 122804646, now seen corresponding path program 1 times [2024-11-06 20:15:42,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:42,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505125987] [2024-11-06 20:15:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:42,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 1632 proven. 0 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2024-11-06 20:15:43,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:43,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505125987] [2024-11-06 20:15:43,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505125987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:43,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:43,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:15:43,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710472607] [2024-11-06 20:15:43,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:43,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:43,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:15:43,833 INFO L87 Difference]: Start difference. First operand 73834 states and 79041 transitions. Second operand has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:45,689 INFO L93 Difference]: Finished difference Result 153876 states and 164449 transitions. [2024-11-06 20:15:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:45,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 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 1632 [2024-11-06 20:15:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:45,770 INFO L225 Difference]: With dead ends: 153876 [2024-11-06 20:15:45,770 INFO L226 Difference]: Without dead ends: 73834 [2024-11-06 20:15:45,818 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 20:15:45,819 INFO L432 NwaCegarLoop]: 1052 mSDtfsCounter, 651 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:45,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1059 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:15:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73834 states. [2024-11-06 20:15:46,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73834 to 71764. [2024-11-06 20:15:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71764 states, 71763 states have (on average 1.0359238047461783) internal successors, (74341), 71763 states have internal predecessors, (74341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71764 states to 71764 states and 74341 transitions. [2024-11-06 20:15:46,618 INFO L78 Accepts]: Start accepts. Automaton has 71764 states and 74341 transitions. Word has length 1632 [2024-11-06 20:15:46,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:46,619 INFO L471 AbstractCegarLoop]: Abstraction has 71764 states and 74341 transitions. [2024-11-06 20:15:46,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:46,619 INFO L276 IsEmpty]: Start isEmpty. Operand 71764 states and 74341 transitions. [2024-11-06 20:15:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1668 [2024-11-06 20:15:46,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:46,668 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:46,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-06 20:15:46,668 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:46,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:46,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1467632712, now seen corresponding path program 1 times [2024-11-06 20:15:46,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:46,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342117139] [2024-11-06 20:15:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:46,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2955 backedges. 1974 proven. 319 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2024-11-06 20:15:49,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:49,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342117139] [2024-11-06 20:15:49,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342117139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:15:49,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008100240] [2024-11-06 20:15:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:49,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:15:49,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:15:49,410 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 20:15:49,410 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 20:15:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:49,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 20:15:49,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:15:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2955 backedges. 1994 proven. 0 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2024-11-06 20:15:49,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 20:15:49,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008100240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:49,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 20:15:49,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-06 20:15:49,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892716360] [2024-11-06 20:15:49,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:49,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:15:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:15:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:15:49,987 INFO L87 Difference]: Start difference. First operand 71764 states and 74341 transitions. Second operand has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:51,860 INFO L93 Difference]: Finished difference Result 156636 states and 162591 transitions. [2024-11-06 20:15:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:15:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 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 1667 [2024-11-06 20:15:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:51,952 INFO L225 Difference]: With dead ends: 156636 [2024-11-06 20:15:51,952 INFO L226 Difference]: Without dead ends: 85564 [2024-11-06 20:15:52,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1675 GetRequests, 1669 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-06 20:15:52,002 INFO L432 NwaCegarLoop]: 957 mSDtfsCounter, 609 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:52,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 964 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 20:15:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85564 states. [2024-11-06 20:15:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85564 to 85564. [2024-11-06 20:15:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85564 states, 85563 states have (on average 1.0337412199198253) internal successors, (88450), 85563 states have internal predecessors, (88450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85564 states to 85564 states and 88450 transitions. [2024-11-06 20:15:52,949 INFO L78 Accepts]: Start accepts. Automaton has 85564 states and 88450 transitions. Word has length 1667 [2024-11-06 20:15:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:52,950 INFO L471 AbstractCegarLoop]: Abstraction has 85564 states and 88450 transitions. [2024-11-06 20:15:52,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 85564 states and 88450 transitions. [2024-11-06 20:15:53,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2024-11-06 20:15:53,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:53,016 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:53,029 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 20:15:53,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:15:53,217 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:53,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash -957661622, now seen corresponding path program 1 times [2024-11-06 20:15:53,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:53,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81183507] [2024-11-06 20:15:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:53,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:15:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 2273 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2024-11-06 20:15:54,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:15:54,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81183507] [2024-11-06 20:15:54,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81183507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:15:54,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:15:54,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:15:54,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675559552] [2024-11-06 20:15:54,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:15:54,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:15:54,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:15:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:15:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:15:54,911 INFO L87 Difference]: Start difference. First operand 85564 states and 88450 transitions. Second operand has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:57,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:15:57,944 INFO L93 Difference]: Finished difference Result 204936 states and 212344 transitions. [2024-11-06 20:15:57,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:15:57,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 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 1688 [2024-11-06 20:15:57,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:15:58,066 INFO L225 Difference]: With dead ends: 204936 [2024-11-06 20:15:58,066 INFO L226 Difference]: Without dead ends: 120064 [2024-11-06 20:15:58,122 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 20:15:58,123 INFO L432 NwaCegarLoop]: 958 mSDtfsCounter, 1244 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 3689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:15:58,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 970 Invalid, 3689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3341 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 20:15:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120064 states. [2024-11-06 20:15:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120064 to 118684. [2024-11-06 20:15:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118684 states, 118683 states have (on average 1.029835781030139) internal successors, (122224), 118683 states have internal predecessors, (122224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118684 states to 118684 states and 122224 transitions. [2024-11-06 20:15:59,396 INFO L78 Accepts]: Start accepts. Automaton has 118684 states and 122224 transitions. Word has length 1688 [2024-11-06 20:15:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:15:59,396 INFO L471 AbstractCegarLoop]: Abstraction has 118684 states and 122224 transitions. [2024-11-06 20:15:59,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 20:15:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 118684 states and 122224 transitions. [2024-11-06 20:15:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1822 [2024-11-06 20:15:59,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:15:59,436 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:59,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-06 20:15:59,436 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:15:59,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:15:59,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1467640742, now seen corresponding path program 1 times [2024-11-06 20:15:59,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:15:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020302601] [2024-11-06 20:15:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:15:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:15:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:16:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 1956 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2024-11-06 20:16:00,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:16:00,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020302601] [2024-11-06 20:16:00,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020302601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:16:00,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:16:00,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:16:00,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668125507] [2024-11-06 20:16:00,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:16:00,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:16:00,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:16:00,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:16:00,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:16:00,181 INFO L87 Difference]: Start difference. First operand 118684 states and 122224 transitions. Second operand has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)