./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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', '17c1b3adab900925d0968acf284c9fae9bc7d0ec39197e53dc7bd6b93c5a8558'] 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/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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 17c1b3adab900925d0968acf284c9fae9bc7d0ec39197e53dc7bd6b93c5a8558 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 00:29:20,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 00:29:20,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 00:29:20,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 00:29:20,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 00:29:20,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 00:29:20,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 00:29:20,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 00:29:20,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 00:29:20,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 00:29:20,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 00:29:20,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 00:29:20,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 00:29:20,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 00:29:20,611 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 00:29:20,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 00:29:20,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 00:29:20,613 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 00:29:20,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 00:29:20,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 00:29:20,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 00:29:20,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 00:29:20,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 00:29:20,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 00:29:20,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 00:29:20,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 00:29:20,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 00:29:20,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 00:29:20,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 00:29:20,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 00:29:20,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 00:29:20,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 00:29:20,616 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 -> 17c1b3adab900925d0968acf284c9fae9bc7d0ec39197e53dc7bd6b93c5a8558 [2024-11-07 00:29:20,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 00:29:20,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 00:29:20,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 00:29:20,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 00:29:20,896 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 00:29:20,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-07 00:29:22,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 00:29:22,457 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 00:29:22,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-07 00:29:22,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d95c9686/1d37818f42d34d9d99ef849f1a699f9e/FLAG3ce2c4994 [2024-11-07 00:29:22,492 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d95c9686/1d37818f42d34d9d99ef849f1a699f9e [2024-11-07 00:29:22,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 00:29:22,496 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 00:29:22,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 00:29:22,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 00:29:22,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 00:29:22,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8dbe40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22, skipping insertion in model container [2024-11-07 00:29:22,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,532 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 00:29:22,709 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/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118] [2024-11-07 00:29:22,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 00:29:22,738 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 00:29:22,764 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/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118] [2024-11-07 00:29:22,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 00:29:22,792 INFO L204 MainTranslator]: Completed translation [2024-11-07 00:29:22,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22 WrapperNode [2024-11-07 00:29:22,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 00:29:22,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 00:29:22,795 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 00:29:22,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 00:29:22,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,845 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 290 [2024-11-07 00:29:22,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 00:29:22,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 00:29:22,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 00:29:22,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 00:29:22,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,858 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,881 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]. [2024-11-07 00:29:22,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 00:29:22,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 00:29:22,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 00:29:22,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 00:29:22,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (1/1) ... [2024-11-07 00:29:22,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 00:29:22,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:22,947 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) [2024-11-07 00:29:22,953 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 [2024-11-07 00:29:22,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 00:29:22,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 00:29:22,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 00:29:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 00:29:23,079 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 00:29:23,080 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 00:29:23,408 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-07 00:29:23,409 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 00:29:23,418 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 00:29:23,418 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-07 00:29:23,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:23 BoogieIcfgContainer [2024-11-07 00:29:23,419 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 00:29:23,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 00:29:23,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 00:29:23,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 00:29:23,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:29:22" (1/3) ... [2024-11-07 00:29:23,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27eaf27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:23, skipping insertion in model container [2024-11-07 00:29:23,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:22" (2/3) ... [2024-11-07 00:29:23,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27eaf27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:23, skipping insertion in model container [2024-11-07 00:29:23,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:23" (3/3) ... [2024-11-07 00:29:23,430 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-07 00:29:23,442 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 00:29:23,442 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 00:29:23,483 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 00:29:23,492 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;@63a5074f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 00:29:23,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 00:29:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-07 00:29:23,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:23,502 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] [2024-11-07 00:29:23,503 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:23,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash -976687966, now seen corresponding path program 1 times [2024-11-07 00:29:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:23,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834694227] [2024-11-07 00:29:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:23,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:23,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:23,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834694227] [2024-11-07 00:29:23,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834694227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:23,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:23,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:29:23,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64702647] [2024-11-07 00:29:23,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:23,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:29:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:23,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:29:23,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:23,830 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 0 states have call successors, (0), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:23,880 INFO L93 Difference]: Finished difference Result 146 states and 230 transitions. [2024-11-07 00:29:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:29:23,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-07 00:29:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:23,891 INFO L225 Difference]: With dead ends: 146 [2024-11-07 00:29:23,891 INFO L226 Difference]: Without dead ends: 95 [2024-11-07 00:29:23,898 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 [2024-11-07 00:29:23,900 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:23,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 211 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-07 00:29:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-11-07 00:29:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4782608695652173) internal successors, (136), 92 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2024-11-07 00:29:23,934 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 37 [2024-11-07 00:29:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:23,935 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2024-11-07 00:29:23,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2024-11-07 00:29:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-07 00:29:23,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:23,936 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] [2024-11-07 00:29:23,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 00:29:23,937 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:23,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:23,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1572742836, now seen corresponding path program 1 times [2024-11-07 00:29:23,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:23,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554199155] [2024-11-07 00:29:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:23,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:24,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554199155] [2024-11-07 00:29:24,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554199155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:24,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:24,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:29:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977393455] [2024-11-07 00:29:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:24,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:29:24,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:29:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:24,094 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:24,121 INFO L93 Difference]: Finished difference Result 225 states and 344 transitions. [2024-11-07 00:29:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:29:24,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-07 00:29:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:24,125 INFO L225 Difference]: With dead ends: 225 [2024-11-07 00:29:24,125 INFO L226 Difference]: Without dead ends: 151 [2024-11-07 00:29:24,126 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 [2024-11-07 00:29:24,127 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:24,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-07 00:29:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2024-11-07 00:29:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.5135135135135136) internal successors, (224), 148 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2024-11-07 00:29:24,137 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 38 [2024-11-07 00:29:24,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:24,137 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2024-11-07 00:29:24,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2024-11-07 00:29:24,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-07 00:29:24,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:24,138 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] [2024-11-07 00:29:24,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 00:29:24,139 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:24,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1624580866, now seen corresponding path program 1 times [2024-11-07 00:29:24,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:24,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803842950] [2024-11-07 00:29:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:24,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:24,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:24,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803842950] [2024-11-07 00:29:24,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803842950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:24,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:29:24,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171376462] [2024-11-07 00:29:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:24,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:29:24,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:29:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:29:24,353 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:24,525 INFO L93 Difference]: Finished difference Result 929 states and 1454 transitions. [2024-11-07 00:29:24,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 00:29:24,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-07 00:29:24,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:24,533 INFO L225 Difference]: With dead ends: 929 [2024-11-07 00:29:24,533 INFO L226 Difference]: Without dead ends: 799 [2024-11-07 00:29:24,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-07 00:29:24,539 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 410 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:24,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 575 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 00:29:24,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-11-07 00:29:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 277. [2024-11-07 00:29:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.5217391304347827) internal successors, (420), 276 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 420 transitions. [2024-11-07 00:29:24,564 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 420 transitions. Word has length 39 [2024-11-07 00:29:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:24,564 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 420 transitions. [2024-11-07 00:29:24,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 420 transitions. [2024-11-07 00:29:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 00:29:24,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:24,566 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] [2024-11-07 00:29:24,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 00:29:24,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:24,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1224060410, now seen corresponding path program 1 times [2024-11-07 00:29:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:24,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919513576] [2024-11-07 00:29:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:24,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:24,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:24,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919513576] [2024-11-07 00:29:24,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919513576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:24,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:24,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:29:24,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288515270] [2024-11-07 00:29:24,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:24,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:29:24,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:24,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:29:24,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:24,692 INFO L87 Difference]: Start difference. First operand 277 states and 420 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:24,732 INFO L93 Difference]: Finished difference Result 749 states and 1146 transitions. [2024-11-07 00:29:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:29:24,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-07 00:29:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:24,737 INFO L225 Difference]: With dead ends: 749 [2024-11-07 00:29:24,737 INFO L226 Difference]: Without dead ends: 491 [2024-11-07 00:29:24,738 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 [2024-11-07 00:29:24,741 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:24,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 141 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:24,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-07 00:29:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 481. [2024-11-07 00:29:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4916666666666667) internal successors, (716), 480 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 716 transitions. [2024-11-07 00:29:24,780 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 716 transitions. Word has length 41 [2024-11-07 00:29:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:24,781 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 716 transitions. [2024-11-07 00:29:24,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 716 transitions. [2024-11-07 00:29:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 00:29:24,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:24,783 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] [2024-11-07 00:29:24,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 00:29:24,786 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:24,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1245063065, now seen corresponding path program 1 times [2024-11-07 00:29:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051568136] [2024-11-07 00:29:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:24,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051568136] [2024-11-07 00:29:25,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051568136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:25,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:25,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:29:25,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969462797] [2024-11-07 00:29:25,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:25,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:29:25,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:25,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:29:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:29:25,060 INFO L87 Difference]: Start difference. First operand 481 states and 716 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:25,135 INFO L93 Difference]: Finished difference Result 945 states and 1414 transitions. [2024-11-07 00:29:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:29:25,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-07 00:29:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:25,138 INFO L225 Difference]: With dead ends: 945 [2024-11-07 00:29:25,139 INFO L226 Difference]: Without dead ends: 483 [2024-11-07 00:29:25,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-07 00:29:25,140 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 46 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:25,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 266 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-07 00:29:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2024-11-07 00:29:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.475) internal successors, (708), 480 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 708 transitions. [2024-11-07 00:29:25,154 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 708 transitions. Word has length 41 [2024-11-07 00:29:25,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:25,154 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 708 transitions. [2024-11-07 00:29:25,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 708 transitions. [2024-11-07 00:29:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 00:29:25,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:25,157 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] [2024-11-07 00:29:25,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 00:29:25,158 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:25,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:25,159 INFO L85 PathProgramCache]: Analyzing trace with hash -59660072, now seen corresponding path program 1 times [2024-11-07 00:29:25,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:25,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525748374] [2024-11-07 00:29:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:25,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:25,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:25,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525748374] [2024-11-07 00:29:25,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525748374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:25,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:25,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 00:29:25,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388544883] [2024-11-07 00:29:25,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:25,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:29:25,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:29:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:29:25,283 INFO L87 Difference]: Start difference. First operand 481 states and 708 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:25,355 INFO L93 Difference]: Finished difference Result 943 states and 1397 transitions. [2024-11-07 00:29:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:29:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-07 00:29:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:25,362 INFO L225 Difference]: With dead ends: 943 [2024-11-07 00:29:25,362 INFO L226 Difference]: Without dead ends: 481 [2024-11-07 00:29:25,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 00:29:25,364 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 222 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:25,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 56 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-07 00:29:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2024-11-07 00:29:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4416666666666667) internal successors, (692), 480 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 692 transitions. [2024-11-07 00:29:25,381 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 692 transitions. Word has length 42 [2024-11-07 00:29:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:25,381 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 692 transitions. [2024-11-07 00:29:25,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 692 transitions. [2024-11-07 00:29:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 00:29:25,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:25,383 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] [2024-11-07 00:29:25,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 00:29:25,383 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:25,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:25,384 INFO L85 PathProgramCache]: Analyzing trace with hash 68425235, now seen corresponding path program 1 times [2024-11-07 00:29:25,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:25,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001210739] [2024-11-07 00:29:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:25,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:25,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001210739] [2024-11-07 00:29:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001210739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:25,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:25,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 00:29:25,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378545541] [2024-11-07 00:29:25,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:25,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:29:25,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:29:25,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:29:25,493 INFO L87 Difference]: Start difference. First operand 481 states and 692 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:25,560 INFO L93 Difference]: Finished difference Result 943 states and 1365 transitions. [2024-11-07 00:29:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:29:25,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-07 00:29:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:25,563 INFO L225 Difference]: With dead ends: 943 [2024-11-07 00:29:25,564 INFO L226 Difference]: Without dead ends: 481 [2024-11-07 00:29:25,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 00:29:25,565 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 206 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:25,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 64 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-07 00:29:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2024-11-07 00:29:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.425) internal successors, (684), 480 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 684 transitions. [2024-11-07 00:29:25,588 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 684 transitions. Word has length 42 [2024-11-07 00:29:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:25,590 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 684 transitions. [2024-11-07 00:29:25,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,591 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 684 transitions. [2024-11-07 00:29:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 00:29:25,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:25,592 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] [2024-11-07 00:29:25,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 00:29:25,592 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:25,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash 933957624, now seen corresponding path program 1 times [2024-11-07 00:29:25,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:25,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964836223] [2024-11-07 00:29:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:25,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:25,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964836223] [2024-11-07 00:29:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964836223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:25,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:25,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:29:25,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535325670] [2024-11-07 00:29:25,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:25,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:29:25,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:25,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:29:25,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:29:25,871 INFO L87 Difference]: Start difference. First operand 481 states and 684 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:25,894 INFO L93 Difference]: Finished difference Result 499 states and 709 transitions. [2024-11-07 00:29:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:29:25,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-07 00:29:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:25,897 INFO L225 Difference]: With dead ends: 499 [2024-11-07 00:29:25,897 INFO L226 Difference]: Without dead ends: 497 [2024-11-07 00:29:25,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:29:25,898 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:25,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 309 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-11-07 00:29:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2024-11-07 00:29:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.403225806451613) internal successors, (696), 496 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 696 transitions. [2024-11-07 00:29:25,909 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 696 transitions. Word has length 42 [2024-11-07 00:29:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:25,909 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 696 transitions. [2024-11-07 00:29:25,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 696 transitions. [2024-11-07 00:29:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 00:29:25,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:25,910 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] [2024-11-07 00:29:25,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 00:29:25,910 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:25,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:25,910 INFO L85 PathProgramCache]: Analyzing trace with hash 883353381, now seen corresponding path program 1 times [2024-11-07 00:29:25,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:25,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525477222] [2024-11-07 00:29:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:25,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:25,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:25,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525477222] [2024-11-07 00:29:25,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525477222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:25,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:25,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:29:25,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228219965] [2024-11-07 00:29:25,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:25,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:29:25,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:25,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:29:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:25,968 INFO L87 Difference]: Start difference. First operand 497 states and 696 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:25,985 INFO L93 Difference]: Finished difference Result 968 states and 1382 transitions. [2024-11-07 00:29:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:29:25,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-07 00:29:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:25,988 INFO L225 Difference]: With dead ends: 968 [2024-11-07 00:29:25,988 INFO L226 Difference]: Without dead ends: 693 [2024-11-07 00:29:25,988 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 [2024-11-07 00:29:25,989 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 51 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:25,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:25,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-07 00:29:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2024-11-07 00:29:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 1.4057971014492754) internal successors, (970), 690 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 970 transitions. [2024-11-07 00:29:26,008 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 970 transitions. Word has length 42 [2024-11-07 00:29:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:26,009 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 970 transitions. [2024-11-07 00:29:26,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 970 transitions. [2024-11-07 00:29:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-07 00:29:26,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:26,010 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:29:26,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 00:29:26,011 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:26,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:26,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1515661308, now seen corresponding path program 1 times [2024-11-07 00:29:26,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:26,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184828639] [2024-11-07 00:29:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:26,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 00:29:26,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184828639] [2024-11-07 00:29:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184828639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:26,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:29:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006459110] [2024-11-07 00:29:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:26,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:29:26,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:29:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:29:26,129 INFO L87 Difference]: Start difference. First operand 691 states and 970 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:26,204 INFO L93 Difference]: Finished difference Result 2835 states and 4000 transitions. [2024-11-07 00:29:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:29:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 61 [2024-11-07 00:29:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:26,214 INFO L225 Difference]: With dead ends: 2835 [2024-11-07 00:29:26,214 INFO L226 Difference]: Without dead ends: 2165 [2024-11-07 00:29:26,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 00:29:26,217 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 225 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:26,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 334 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2024-11-07 00:29:26,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1359. [2024-11-07 00:29:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1358 states have (on average 1.4035346097201766) internal successors, (1906), 1358 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1906 transitions. [2024-11-07 00:29:26,257 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1906 transitions. Word has length 61 [2024-11-07 00:29:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:26,258 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1906 transitions. [2024-11-07 00:29:26,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1906 transitions. [2024-11-07 00:29:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-07 00:29:26,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:26,259 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:29:26,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 00:29:26,259 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:26,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1625359882, now seen corresponding path program 1 times [2024-11-07 00:29:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:26,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837526577] [2024-11-07 00:29:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:26,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 00:29:26,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:26,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837526577] [2024-11-07 00:29:26,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837526577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:26,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:26,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:29:26,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904313107] [2024-11-07 00:29:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:26,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:29:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:29:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:29:26,385 INFO L87 Difference]: Start difference. First operand 1359 states and 1906 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:26,460 INFO L93 Difference]: Finished difference Result 3503 states and 4936 transitions. [2024-11-07 00:29:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:29:26,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 61 [2024-11-07 00:29:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:26,472 INFO L225 Difference]: With dead ends: 3503 [2024-11-07 00:29:26,472 INFO L226 Difference]: Without dead ends: 2833 [2024-11-07 00:29:26,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 00:29:26,475 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 219 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:26,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 366 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:26,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2024-11-07 00:29:26,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2363. [2024-11-07 00:29:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2362 states have (on average 1.397121083827265) internal successors, (3300), 2362 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3300 transitions. [2024-11-07 00:29:26,531 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3300 transitions. Word has length 61 [2024-11-07 00:29:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:26,532 INFO L471 AbstractCegarLoop]: Abstraction has 2363 states and 3300 transitions. [2024-11-07 00:29:26,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3300 transitions. [2024-11-07 00:29:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-07 00:29:26,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:26,534 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:29:26,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 00:29:26,534 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:26,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:26,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2114297975, now seen corresponding path program 1 times [2024-11-07 00:29:26,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:26,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153034297] [2024-11-07 00:29:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:26,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 00:29:26,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:26,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153034297] [2024-11-07 00:29:26,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153034297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:26,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:26,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 00:29:26,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674784405] [2024-11-07 00:29:26,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:26,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 00:29:26,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 00:29:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 00:29:26,638 INFO L87 Difference]: Start difference. First operand 2363 states and 3300 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:26,710 INFO L93 Difference]: Finished difference Result 3763 states and 5320 transitions. [2024-11-07 00:29:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 00:29:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 62 [2024-11-07 00:29:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:26,723 INFO L225 Difference]: With dead ends: 3763 [2024-11-07 00:29:26,725 INFO L226 Difference]: Without dead ends: 3297 [2024-11-07 00:29:26,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 00:29:26,728 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 211 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:26,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 343 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2024-11-07 00:29:26,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 2827. [2024-11-07 00:29:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2826 states have (on average 1.402689313517339) internal successors, (3964), 2826 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3964 transitions. [2024-11-07 00:29:26,824 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3964 transitions. Word has length 62 [2024-11-07 00:29:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:26,825 INFO L471 AbstractCegarLoop]: Abstraction has 2827 states and 3964 transitions. [2024-11-07 00:29:26,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3964 transitions. [2024-11-07 00:29:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-07 00:29:26,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:26,828 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:29:26,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 00:29:26,829 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:26,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash -344216809, now seen corresponding path program 1 times [2024-11-07 00:29:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:26,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78493902] [2024-11-07 00:29:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:26,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:26,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:26,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78493902] [2024-11-07 00:29:26,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78493902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:26,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:26,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:29:26,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899919566] [2024-11-07 00:29:26,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:26,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:29:26,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:26,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:29:26,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:26,920 INFO L87 Difference]: Start difference. First operand 2827 states and 3964 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2024-11-07 00:29:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:26,954 INFO L93 Difference]: Finished difference Result 4945 states and 6985 transitions. [2024-11-07 00:29:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:29:26,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 [2024-11-07 00:29:26,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:26,962 INFO L225 Difference]: With dead ends: 4945 [2024-11-07 00:29:26,963 INFO L226 Difference]: Without dead ends: 2139 [2024-11-07 00:29:26,966 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 [2024-11-07 00:29:26,968 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 39 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:26,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-11-07 00:29:27,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2024-11-07 00:29:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2136 states have (on average 1.4063670411985019) internal successors, (3004), 2136 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3004 transitions. [2024-11-07 00:29:27,015 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3004 transitions. Word has length 63 [2024-11-07 00:29:27,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:27,015 INFO L471 AbstractCegarLoop]: Abstraction has 2137 states and 3004 transitions. [2024-11-07 00:29:27,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2024-11-07 00:29:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3004 transitions. [2024-11-07 00:29:27,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-07 00:29:27,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:27,019 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:29:27,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 00:29:27,020 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:27,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2058333971, now seen corresponding path program 1 times [2024-11-07 00:29:27,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:27,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352682231] [2024-11-07 00:29:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:27,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:27,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352682231] [2024-11-07 00:29:27,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352682231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:29:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652454084] [2024-11-07 00:29:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:27,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:27,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:27,398 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) [2024-11-07 00:29:27,399 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 [2024-11-07 00:29:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:27,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 00:29:27,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:29:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:28,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:29:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:28,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652454084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:29:28,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:29:28,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-07 00:29:28,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515725812] [2024-11-07 00:29:28,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:29:28,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 00:29:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 00:29:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2024-11-07 00:29:28,683 INFO L87 Difference]: Start difference. First operand 2137 states and 3004 transitions. Second operand has 25 states, 25 states have (on average 6.48) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:32,085 INFO L93 Difference]: Finished difference Result 17188 states and 24016 transitions. [2024-11-07 00:29:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-07 00:29:32,085 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 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 [2024-11-07 00:29:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:32,144 INFO L225 Difference]: With dead ends: 17188 [2024-11-07 00:29:32,144 INFO L226 Difference]: Without dead ends: 15086 [2024-11-07 00:29:32,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2506 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1583, Invalid=7537, Unknown=0, NotChecked=0, Total=9120 [2024-11-07 00:29:32,155 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 2812 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:32,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2812 Valid, 1030 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 00:29:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15086 states. [2024-11-07 00:29:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15086 to 10642. [2024-11-07 00:29:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10642 states, 10641 states have (on average 1.3895310591109857) internal successors, (14786), 10641 states have internal predecessors, (14786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10642 states to 10642 states and 14786 transitions. [2024-11-07 00:29:32,440 INFO L78 Accepts]: Start accepts. Automaton has 10642 states and 14786 transitions. Word has length 63 [2024-11-07 00:29:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:32,440 INFO L471 AbstractCegarLoop]: Abstraction has 10642 states and 14786 transitions. [2024-11-07 00:29:32,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 10642 states and 14786 transitions. [2024-11-07 00:29:32,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-07 00:29:32,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:32,447 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:29:32,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 00:29:32,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-07 00:29:32,652 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:32,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:32,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2139757523, now seen corresponding path program 1 times [2024-11-07 00:29:32,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:32,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783306125] [2024-11-07 00:29:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:32,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:32,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:32,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783306125] [2024-11-07 00:29:32,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783306125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:29:32,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405035724] [2024-11-07 00:29:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:32,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:32,975 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) [2024-11-07 00:29:32,977 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 [2024-11-07 00:29:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:33,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 00:29:33,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:29:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:34,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:29:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:35,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405035724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:29:35,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:29:35,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 17] total 36 [2024-11-07 00:29:35,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384305114] [2024-11-07 00:29:35,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:29:35,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 00:29:35,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 00:29:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 00:29:35,650 INFO L87 Difference]: Start difference. First operand 10642 states and 14786 transitions. Second operand has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:44,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:44,253 INFO L93 Difference]: Finished difference Result 86584 states and 119048 transitions. [2024-11-07 00:29:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2024-11-07 00:29:44,254 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 states have internal predecessors, (175), 0 states have call successors, (0), 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 64 [2024-11-07 00:29:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:44,453 INFO L225 Difference]: With dead ends: 86584 [2024-11-07 00:29:44,453 INFO L226 Difference]: Without dead ends: 76034 [2024-11-07 00:29:44,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21157 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=8899, Invalid=39281, Unknown=0, NotChecked=0, Total=48180 [2024-11-07 00:29:44,499 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 6423 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6423 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:44,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6423 Valid, 1294 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-07 00:29:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76034 states. [2024-11-07 00:29:45,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76034 to 44430. [2024-11-07 00:29:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44430 states, 44429 states have (on average 1.3846361610659703) internal successors, (61518), 44429 states have internal predecessors, (61518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44430 states to 44430 states and 61518 transitions. [2024-11-07 00:29:45,515 INFO L78 Accepts]: Start accepts. Automaton has 44430 states and 61518 transitions. Word has length 64 [2024-11-07 00:29:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:45,515 INFO L471 AbstractCegarLoop]: Abstraction has 44430 states and 61518 transitions. [2024-11-07 00:29:45,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 44430 states and 61518 transitions. [2024-11-07 00:29:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-07 00:29:45,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:45,518 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:29:45,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 00:29:45,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 00:29:45,723 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:45,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1508040122, now seen corresponding path program 1 times [2024-11-07 00:29:45,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:45,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073651338] [2024-11-07 00:29:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:45,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:45,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:45,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:45,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073651338] [2024-11-07 00:29:45,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073651338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:29:45,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:29:45,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:29:45,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575966991] [2024-11-07 00:29:45,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:29:45,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:29:45,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:29:45,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:29:45,802 INFO L87 Difference]: Start difference. First operand 44430 states and 61518 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:46,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:29:46,196 INFO L93 Difference]: Finished difference Result 69436 states and 96260 transitions. [2024-11-07 00:29:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:29:46,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-11-07 00:29:46,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:29:46,276 INFO L225 Difference]: With dead ends: 69436 [2024-11-07 00:29:46,276 INFO L226 Difference]: Without dead ends: 25154 [2024-11-07 00:29:46,325 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 [2024-11-07 00:29:46,331 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 30 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:29:46,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 159 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:29:46,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25154 states. [2024-11-07 00:29:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25154 to 25152. [2024-11-07 00:29:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25152 states, 25151 states have (on average 1.3616953600254462) internal successors, (34248), 25151 states have internal predecessors, (34248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25152 states to 25152 states and 34248 transitions. [2024-11-07 00:29:46,809 INFO L78 Accepts]: Start accepts. Automaton has 25152 states and 34248 transitions. Word has length 65 [2024-11-07 00:29:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:29:46,809 INFO L471 AbstractCegarLoop]: Abstraction has 25152 states and 34248 transitions. [2024-11-07 00:29:46,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:29:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 25152 states and 34248 transitions. [2024-11-07 00:29:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-07 00:29:46,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:29:46,812 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:29:46,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 00:29:46,812 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:29:46,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:29:46,813 INFO L85 PathProgramCache]: Analyzing trace with hash 76199226, now seen corresponding path program 1 times [2024-11-07 00:29:46,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:29:46,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100171185] [2024-11-07 00:29:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:46,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:29:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:47,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:29:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100171185] [2024-11-07 00:29:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100171185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:29:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164647336] [2024-11-07 00:29:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:29:47,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:29:47,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:29:47,474 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) [2024-11-07 00:29:47,476 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 [2024-11-07 00:29:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:29:47,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 00:29:47,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:29:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:48,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:29:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:29:49,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164647336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:29:49,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:29:49,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 43 [2024-11-07 00:29:49,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081676339] [2024-11-07 00:29:49,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:29:49,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-07 00:29:49,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:29:49,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-07 00:29:49,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2024-11-07 00:29:49,353 INFO L87 Difference]: Start difference. First operand 25152 states and 34248 transitions. Second operand has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:30:01,330 INFO L93 Difference]: Finished difference Result 62532 states and 85111 transitions. [2024-11-07 00:30:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-11-07 00:30:01,330 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 0 states have call successors, (0), 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 65 [2024-11-07 00:30:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:30:01,408 INFO L225 Difference]: With dead ends: 62532 [2024-11-07 00:30:01,409 INFO L226 Difference]: Without dead ends: 45862 [2024-11-07 00:30:01,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18032 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=6503, Invalid=43897, Unknown=0, NotChecked=0, Total=50400 [2024-11-07 00:30:01,430 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 5061 mSDsluCounter, 4413 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5061 SdHoareTripleChecker+Valid, 4625 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-07 00:30:01,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5061 Valid, 4625 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-07 00:30:01,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45862 states. [2024-11-07 00:30:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45862 to 29070. [2024-11-07 00:30:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29070 states, 29069 states have (on average 1.3644432213010425) internal successors, (39663), 29069 states have internal predecessors, (39663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29070 states to 29070 states and 39663 transitions. [2024-11-07 00:30:02,027 INFO L78 Accepts]: Start accepts. Automaton has 29070 states and 39663 transitions. Word has length 65 [2024-11-07 00:30:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:30:02,027 INFO L471 AbstractCegarLoop]: Abstraction has 29070 states and 39663 transitions. [2024-11-07 00:30:02,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 29070 states and 39663 transitions. [2024-11-07 00:30:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-07 00:30:02,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:30:02,030 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:30:02,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 00:30:02,231 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 [2024-11-07 00:30:02,231 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:30:02,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:30:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1000094856, now seen corresponding path program 1 times [2024-11-07 00:30:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:30:02,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407760538] [2024-11-07 00:30:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:02,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:30:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:02,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:30:02,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407760538] [2024-11-07 00:30:02,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407760538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:30:02,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:30:02,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:30:02,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125847503] [2024-11-07 00:30:02,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:30:02,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:30:02,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:30:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:30:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:30:02,331 INFO L87 Difference]: Start difference. First operand 29070 states and 39663 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:30:02,458 INFO L93 Difference]: Finished difference Result 47050 states and 64097 transitions. [2024-11-07 00:30:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:30:02,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-07 00:30:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:30:02,498 INFO L225 Difference]: With dead ends: 47050 [2024-11-07 00:30:02,498 INFO L226 Difference]: Without dead ends: 18128 [2024-11-07 00:30:02,523 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 [2024-11-07 00:30:02,524 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 24 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:30:02,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 144 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:30:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18128 states. [2024-11-07 00:30:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18128 to 18126. [2024-11-07 00:30:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18126 states, 18125 states have (on average 1.3390344827586207) internal successors, (24270), 18125 states have internal predecessors, (24270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18126 states to 18126 states and 24270 transitions. [2024-11-07 00:30:02,817 INFO L78 Accepts]: Start accepts. Automaton has 18126 states and 24270 transitions. Word has length 66 [2024-11-07 00:30:02,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:30:02,818 INFO L471 AbstractCegarLoop]: Abstraction has 18126 states and 24270 transitions. [2024-11-07 00:30:02,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:02,818 INFO L276 IsEmpty]: Start isEmpty. Operand 18126 states and 24270 transitions. [2024-11-07 00:30:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-07 00:30:02,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:30:02,820 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:30:02,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 00:30:02,820 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:30:02,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:30:02,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1535675016, now seen corresponding path program 1 times [2024-11-07 00:30:02,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:30:02,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237693313] [2024-11-07 00:30:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:02,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:30:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 00:30:02,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:30:02,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237693313] [2024-11-07 00:30:02,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237693313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:30:02,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463224365] [2024-11-07 00:30:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:02,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:30:02,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:30:02,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:30:02,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 00:30:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:03,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 00:30:03,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:30:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:03,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:30:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:03,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463224365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:30:03,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:30:03,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-11-07 00:30:03,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032911085] [2024-11-07 00:30:03,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:30:03,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 00:30:03,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:30:03,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 00:30:03,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-07 00:30:03,486 INFO L87 Difference]: Start difference. First operand 18126 states and 24270 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:30:03,801 INFO L93 Difference]: Finished difference Result 70427 states and 93758 transitions. [2024-11-07 00:30:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 00:30:03,802 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 0 states have call successors, (0), 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 66 [2024-11-07 00:30:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:30:03,883 INFO L225 Difference]: With dead ends: 70427 [2024-11-07 00:30:03,883 INFO L226 Difference]: Without dead ends: 51769 [2024-11-07 00:30:03,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-07 00:30:03,903 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 297 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 00:30:03,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 766 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 00:30:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51769 states. [2024-11-07 00:30:04,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51769 to 51277. [2024-11-07 00:30:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51277 states, 51276 states have (on average 1.290525782042281) internal successors, (66173), 51276 states have internal predecessors, (66173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51277 states to 51277 states and 66173 transitions. [2024-11-07 00:30:04,524 INFO L78 Accepts]: Start accepts. Automaton has 51277 states and 66173 transitions. Word has length 66 [2024-11-07 00:30:04,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:30:04,525 INFO L471 AbstractCegarLoop]: Abstraction has 51277 states and 66173 transitions. [2024-11-07 00:30:04,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand 51277 states and 66173 transitions. [2024-11-07 00:30:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-07 00:30:04,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:30:04,526 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:30:04,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 00:30:04,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:30:04,731 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:30:04,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:30:04,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1707252983, now seen corresponding path program 1 times [2024-11-07 00:30:04,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:30:04,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618458193] [2024-11-07 00:30:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:30:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 00:30:04,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:30:04,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618458193] [2024-11-07 00:30:04,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618458193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:30:04,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:30:04,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:30:04,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106297984] [2024-11-07 00:30:04,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:30:04,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:30:04,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:30:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:30:04,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:30:04,770 INFO L87 Difference]: Start difference. First operand 51277 states and 66173 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2024-11-07 00:30:04,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:30:04,959 INFO L93 Difference]: Finished difference Result 81977 states and 105738 transitions. [2024-11-07 00:30:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:30:04,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 66 [2024-11-07 00:30:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:30:05,006 INFO L225 Difference]: With dead ends: 81977 [2024-11-07 00:30:05,006 INFO L226 Difference]: Without dead ends: 31685 [2024-11-07 00:30:05,044 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 [2024-11-07 00:30:05,045 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 45 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:30:05,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 85 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:30:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31685 states. [2024-11-07 00:30:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31685 to 31685. [2024-11-07 00:30:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31685 states, 31684 states have (on average 1.265907082439086) internal successors, (40109), 31684 states have internal predecessors, (40109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31685 states to 31685 states and 40109 transitions. [2024-11-07 00:30:05,646 INFO L78 Accepts]: Start accepts. Automaton has 31685 states and 40109 transitions. Word has length 66 [2024-11-07 00:30:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:30:05,647 INFO L471 AbstractCegarLoop]: Abstraction has 31685 states and 40109 transitions. [2024-11-07 00:30:05,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2024-11-07 00:30:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 31685 states and 40109 transitions. [2024-11-07 00:30:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-07 00:30:05,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:30:05,648 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:30:05,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 00:30:05,649 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:30:05,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:30:05,649 INFO L85 PathProgramCache]: Analyzing trace with hash 142443222, now seen corresponding path program 1 times [2024-11-07 00:30:05,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:30:05,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808004845] [2024-11-07 00:30:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:05,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:30:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 00:30:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:30:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808004845] [2024-11-07 00:30:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808004845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:30:05,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:30:05,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:30:05,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004346289] [2024-11-07 00:30:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:30:05,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:30:05,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:30:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:30:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:30:05,688 INFO L87 Difference]: Start difference. First operand 31685 states and 40109 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2024-11-07 00:30:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:30:05,817 INFO L93 Difference]: Finished difference Result 53012 states and 66943 transitions. [2024-11-07 00:30:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:30:05,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 67 [2024-11-07 00:30:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:30:05,847 INFO L225 Difference]: With dead ends: 53012 [2024-11-07 00:30:05,848 INFO L226 Difference]: Without dead ends: 21401 [2024-11-07 00:30:05,870 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 [2024-11-07 00:30:05,871 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:30:05,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 76 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:30:05,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21401 states. [2024-11-07 00:30:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21401 to 21401. [2024-11-07 00:30:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21401 states, 21400 states have (on average 1.2339719626168224) internal successors, (26407), 21400 states have internal predecessors, (26407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 26407 transitions. [2024-11-07 00:30:06,110 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 26407 transitions. Word has length 67 [2024-11-07 00:30:06,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:30:06,110 INFO L471 AbstractCegarLoop]: Abstraction has 21401 states and 26407 transitions. [2024-11-07 00:30:06,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2024-11-07 00:30:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 26407 transitions. [2024-11-07 00:30:06,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-07 00:30:06,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:30:06,111 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 00:30:06,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 00:30:06,111 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:30:06,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:30:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash 404521601, now seen corresponding path program 1 times [2024-11-07 00:30:06,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:30:06,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83873788] [2024-11-07 00:30:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:06,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:30:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 00:30:06,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:30:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83873788] [2024-11-07 00:30:06,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83873788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 00:30:06,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 00:30:06,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 00:30:06,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248069554] [2024-11-07 00:30:06,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 00:30:06,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 00:30:06,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:30:06,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 00:30:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 00:30:06,327 INFO L87 Difference]: Start difference. First operand 21401 states and 26407 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:06,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:30:06,421 INFO L93 Difference]: Finished difference Result 32818 states and 40597 transitions. [2024-11-07 00:30:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 00:30:06,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 67 [2024-11-07 00:30:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:30:06,439 INFO L225 Difference]: With dead ends: 32818 [2024-11-07 00:30:06,439 INFO L226 Difference]: Without dead ends: 11604 [2024-11-07 00:30:06,454 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 [2024-11-07 00:30:06,456 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 44 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:30:06,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 88 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 00:30:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11604 states. [2024-11-07 00:30:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11604 to 11604. [2024-11-07 00:30:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11604 states, 11603 states have (on average 1.219426010514522) internal successors, (14149), 11603 states have internal predecessors, (14149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11604 states to 11604 states and 14149 transitions. [2024-11-07 00:30:06,594 INFO L78 Accepts]: Start accepts. Automaton has 11604 states and 14149 transitions. Word has length 67 [2024-11-07 00:30:06,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:30:06,596 INFO L471 AbstractCegarLoop]: Abstraction has 11604 states and 14149 transitions. [2024-11-07 00:30:06,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 11604 states and 14149 transitions. [2024-11-07 00:30:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-07 00:30:06,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:30:06,599 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-07 00:30:06,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 00:30:06,600 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:30:06,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:30:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -539067345, now seen corresponding path program 1 times [2024-11-07 00:30:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:30:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504516622] [2024-11-07 00:30:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:06,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:30:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:07,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:30:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504516622] [2024-11-07 00:30:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504516622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:30:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934762807] [2024-11-07 00:30:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:07,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:30:07,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:30:07,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:30:07,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 00:30:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:07,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 00:30:07,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:30:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:08,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:30:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:09,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934762807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:30:09,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:30:09,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 31 [2024-11-07 00:30:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569847147] [2024-11-07 00:30:09,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:30:09,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 00:30:09,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:30:09,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 00:30:09,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2024-11-07 00:30:09,383 INFO L87 Difference]: Start difference. First operand 11604 states and 14149 transitions. Second operand has 32 states, 32 states have (on average 8.25) internal successors, (264), 31 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:30:11,936 INFO L93 Difference]: Finished difference Result 21553 states and 26658 transitions. [2024-11-07 00:30:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-07 00:30:11,937 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.25) internal successors, (264), 31 states have internal predecessors, (264), 0 states have call successors, (0), 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 110 [2024-11-07 00:30:11,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:30:11,952 INFO L225 Difference]: With dead ends: 21553 [2024-11-07 00:30:11,953 INFO L226 Difference]: Without dead ends: 15758 [2024-11-07 00:30:11,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1252, Invalid=5888, Unknown=0, NotChecked=0, Total=7140 [2024-11-07 00:30:11,963 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 2109 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 00:30:11,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 1436 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 00:30:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15758 states. [2024-11-07 00:30:12,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15758 to 6825. [2024-11-07 00:30:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6825 states, 6824 states have (on average 1.2121922626025792) internal successors, (8272), 6824 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6825 states to 6825 states and 8272 transitions. [2024-11-07 00:30:12,101 INFO L78 Accepts]: Start accepts. Automaton has 6825 states and 8272 transitions. Word has length 110 [2024-11-07 00:30:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:30:12,101 INFO L471 AbstractCegarLoop]: Abstraction has 6825 states and 8272 transitions. [2024-11-07 00:30:12,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.25) internal successors, (264), 31 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6825 states and 8272 transitions. [2024-11-07 00:30:12,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-07 00:30:12,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:30:12,104 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:30:12,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 00:30:12,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-07 00:30:12,304 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:30:12,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:30:12,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1785934306, now seen corresponding path program 1 times [2024-11-07 00:30:12,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:30:12,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688137429] [2024-11-07 00:30:12,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:12,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:30:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:12,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:30:12,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688137429] [2024-11-07 00:30:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688137429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:30:12,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691884990] [2024-11-07 00:30:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:12,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:30:12,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:30:12,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:30:12,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 00:30:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:12,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 00:30:12,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:30:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:13,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:30:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691884990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:30:14,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:30:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-07 00:30:14,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24604497] [2024-11-07 00:30:14,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:30:14,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 00:30:14,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:30:14,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 00:30:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-07 00:30:14,482 INFO L87 Difference]: Start difference. First operand 6825 states and 8272 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:30:14,867 INFO L93 Difference]: Finished difference Result 10800 states and 13198 transitions. [2024-11-07 00:30:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 00:30:14,867 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 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 110 [2024-11-07 00:30:14,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:30:14,875 INFO L225 Difference]: With dead ends: 10800 [2024-11-07 00:30:14,876 INFO L226 Difference]: Without dead ends: 6742 [2024-11-07 00:30:14,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2024-11-07 00:30:14,881 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 388 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 00:30:14,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 679 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 00:30:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6742 states. [2024-11-07 00:30:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6742 to 6738. [2024-11-07 00:30:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 6737 states have (on average 1.1932610954430756) internal successors, (8039), 6737 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:15,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 8039 transitions. [2024-11-07 00:30:15,042 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 8039 transitions. Word has length 110 [2024-11-07 00:30:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:30:15,042 INFO L471 AbstractCegarLoop]: Abstraction has 6738 states and 8039 transitions. [2024-11-07 00:30:15,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 8039 transitions. [2024-11-07 00:30:15,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-07 00:30:15,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:30:15,044 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:30:15,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 00:30:15,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-07 00:30:15,249 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:30:15,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:30:15,251 INFO L85 PathProgramCache]: Analyzing trace with hash -590516994, now seen corresponding path program 1 times [2024-11-07 00:30:15,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:30:15,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099280597] [2024-11-07 00:30:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:30:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:16,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:30:16,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099280597] [2024-11-07 00:30:16,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099280597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:30:16,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804110980] [2024-11-07 00:30:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:16,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:30:16,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:30:16,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:30:16,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 00:30:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:16,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 00:30:16,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:30:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:18,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:30:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:20,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804110980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:30:20,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:30:20,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 55 [2024-11-07 00:30:20,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796185931] [2024-11-07 00:30:20,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:30:20,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-07 00:30:20,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:30:20,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-07 00:30:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2789, Unknown=0, NotChecked=0, Total=2970 [2024-11-07 00:30:20,359 INFO L87 Difference]: Start difference. First operand 6738 states and 8039 transitions. Second operand has 55 states, 55 states have (on average 5.745454545454545) internal successors, (316), 55 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:30,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 00:30:30,546 INFO L93 Difference]: Finished difference Result 21051 states and 25484 transitions. [2024-11-07 00:30:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-07 00:30:30,547 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.745454545454545) internal successors, (316), 55 states have internal predecessors, (316), 0 states have call successors, (0), 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 111 [2024-11-07 00:30:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 00:30:30,564 INFO L225 Difference]: With dead ends: 21051 [2024-11-07 00:30:30,564 INFO L226 Difference]: Without dead ends: 18064 [2024-11-07 00:30:30,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8346 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2946, Invalid=29274, Unknown=0, NotChecked=0, Total=32220 [2024-11-07 00:30:30,573 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 2020 mSDsluCounter, 9872 mSDsCounter, 0 mSdLazyCounter, 5904 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 10171 SdHoareTripleChecker+Invalid, 5939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 5904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-07 00:30:30,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2020 Valid, 10171 Invalid, 5939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 5904 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-07 00:30:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18064 states. [2024-11-07 00:30:30,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18064 to 13982. [2024-11-07 00:30:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13982 states, 13981 states have (on average 1.2007009512910378) internal successors, (16787), 13981 states have internal predecessors, (16787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13982 states to 13982 states and 16787 transitions. [2024-11-07 00:30:30,703 INFO L78 Accepts]: Start accepts. Automaton has 13982 states and 16787 transitions. Word has length 111 [2024-11-07 00:30:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 00:30:30,704 INFO L471 AbstractCegarLoop]: Abstraction has 13982 states and 16787 transitions. [2024-11-07 00:30:30,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.745454545454545) internal successors, (316), 55 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 00:30:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 13982 states and 16787 transitions. [2024-11-07 00:30:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-07 00:30:30,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 00:30:30,706 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 00:30:30,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 00:30:30,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:30:30,907 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 00:30:30,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 00:30:30,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1181769735, now seen corresponding path program 1 times [2024-11-07 00:30:30,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 00:30:30,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894834273] [2024-11-07 00:30:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:30,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 00:30:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 00:30:31,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894834273] [2024-11-07 00:30:31,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894834273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 00:30:31,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272760108] [2024-11-07 00:30:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 00:30:31,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 00:30:31,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 00:30:31,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 00:30:31,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 00:30:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 00:30:31,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-07 00:30:31,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 00:30:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:33,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 00:30:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 00:30:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272760108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 00:30:35,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 00:30:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 21] total 61 [2024-11-07 00:30:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840711165] [2024-11-07 00:30:35,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 00:30:35,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-07 00:30:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 00:30:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-07 00:30:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2024-11-07 00:30:35,640 INFO L87 Difference]: Start difference. First operand 13982 states and 16787 transitions. Second operand has 61 states, 61 states have (on average 4.901639344262295) internal successors, (299), 61 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)