./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/weaver/popl20-queue-add-2.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e'] 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/weaver/popl20-queue-add-2.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:41:55,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:41:55,825 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:41:55,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:41:55,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:41:55,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:41:55,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:41:55,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:41:55,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:41:55,862 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:41:55,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:41:55,863 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:41:55,863 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:41:55,863 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:41:55,863 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:41:55,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:41:55,864 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:41:55,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:41:55,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:41:55,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:41:55,865 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 ! overflow) ) 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 -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2024-11-07 23:41:56,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:41:56,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:41:56,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:41:56,175 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:41:56,176 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:41:56,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-11-07 23:41:57,531 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:41:57,758 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:41:57,759 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-11-07 23:41:57,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/47927696f/53c5984e7c6246fe884da9a591ec6a31/FLAG57161cbfa [2024-11-07 23:41:57,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/47927696f/53c5984e7c6246fe884da9a591ec6a31 [2024-11-07 23:41:57,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:41:57,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:41:57,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:41:57,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:41:57,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:41:57,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:41:57" (1/1) ... [2024-11-07 23:41:57,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a208e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:57, skipping insertion in model container [2024-11-07 23:41:57,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:41:57" (1/1) ... [2024-11-07 23:41:57,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:41:58,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:41:58,017 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:41:58,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:41:58,061 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:41:58,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58 WrapperNode [2024-11-07 23:41:58,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:41:58,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:41:58,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:41:58,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:41:58,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,109 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 163 [2024-11-07 23:41:58,110 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:41:58,111 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:41:58,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:41:58,112 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:41:58,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,146 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-07 23:41:58,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:41:58,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:41:58,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:41:58,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:41:58,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (1/1) ... [2024-11-07 23:41:58,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:41:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:41:58,211 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 23:41:58,217 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 23:41:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:41:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:41:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:41:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:41:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:41:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:41:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:41:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:41:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:41:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 23:41:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 23:41:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 23:41:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:41:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:41:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:41:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:41:58,236 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 23:41:58,331 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:41:58,333 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:41:58,597 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:41:58,598 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:41:58,839 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:41:58,840 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 23:41:58,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:41:58 BoogieIcfgContainer [2024-11-07 23:41:58,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:41:58,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:41:58,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:41:58,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:41:58,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:41:57" (1/3) ... [2024-11-07 23:41:58,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c7de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:41:58, skipping insertion in model container [2024-11-07 23:41:58,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:58" (2/3) ... [2024-11-07 23:41:58,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c7de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:41:58, skipping insertion in model container [2024-11-07 23:41:58,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:41:58" (3/3) ... [2024-11-07 23:41:58,850 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2024-11-07 23:41:58,862 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:41:58,863 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-07 23:41:58,863 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:41:58,923 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 23:41:58,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 102 flow [2024-11-07 23:41:58,989 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2024-11-07 23:41:58,991 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 23:41:58,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 4/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 100 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-07 23:41:58,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 102 flow [2024-11-07 23:41:58,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 89 flow [2024-11-07 23:41:59,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:41:59,021 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;@12ba212d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:41:59,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-07 23:41:59,024 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:41:59,026 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-07 23:41:59,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:41:59,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:41:59,027 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 23:41:59,028 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:41:59,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:41:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash 517225, now seen corresponding path program 1 times [2024-11-07 23:41:59,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:41:59,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375841922] [2024-11-07 23:41:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:41:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:41:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:41:59,271 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 23:41:59,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:41:59,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375841922] [2024-11-07 23:41:59,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375841922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:41:59,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:41:59,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:41:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973802675] [2024-11-07 23:41:59,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:41:59,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:41:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:41:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:41:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:41:59,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-07 23:41:59,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 23:41:59,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:41:59,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-07 23:41:59,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:41:59,551 INFO L124 PetriNetUnfolderBase]: 165/363 cut-off events. [2024-11-07 23:41:59,551 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-07 23:41:59,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 363 events. 165/363 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1720 event pairs, 136 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 617. Up to 270 conditions per place. [2024-11-07 23:41:59,558 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 19 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-11-07 23:41:59,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 125 flow [2024-11-07 23:41:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:41:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:41:59,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-07 23:41:59,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-07 23:41:59,572 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 89 flow. Second operand 4 states and 84 transitions. [2024-11-07 23:41:59,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 125 flow [2024-11-07 23:41:59,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:41:59,579 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 82 flow [2024-11-07 23:41:59,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-11-07 23:41:59,585 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2024-11-07 23:41:59,585 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 82 flow [2024-11-07 23:41:59,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 23:41:59,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:41:59,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:41:59,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:41:59,586 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:41:59,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:41:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash 16034492, now seen corresponding path program 1 times [2024-11-07 23:41:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:41:59,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769587366] [2024-11-07 23:41:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:41:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:41:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:41:59,683 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 23:41:59,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:41:59,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769587366] [2024-11-07 23:41:59,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769587366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:41:59,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:41:59,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:41:59,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011529155] [2024-11-07 23:41:59,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:41:59,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:41:59,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:41:59,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:41:59,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:41:59,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-07 23:41:59,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 23:41:59,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:41:59,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-07 23:41:59,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:41:59,853 INFO L124 PetriNetUnfolderBase]: 166/367 cut-off events. [2024-11-07 23:41:59,853 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 23:41:59,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 367 events. 166/367 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1732 event pairs, 136 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 642. Up to 275 conditions per place. [2024-11-07 23:41:59,859 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 22 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-11-07 23:41:59,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 146 flow [2024-11-07 23:41:59,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:41:59,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:41:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-07 23:41:59,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-11-07 23:41:59,861 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 82 flow. Second operand 4 states and 83 transitions. [2024-11-07 23:41:59,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 146 flow [2024-11-07 23:41:59,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:41:59,863 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 101 flow [2024-11-07 23:41:59,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-07 23:41:59,864 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-11-07 23:41:59,864 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 101 flow [2024-11-07 23:41:59,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 23:41:59,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:41:59,866 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 23:41:59,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 23:41:59,866 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:41:59,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:41:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1767686971, now seen corresponding path program 1 times [2024-11-07 23:41:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:41:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522525720] [2024-11-07 23:41:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:41:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:41:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:00,028 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 23:42:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:00,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522525720] [2024-11-07 23:42:00,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522525720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:00,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:00,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:42:00,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908447107] [2024-11-07 23:42:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:00,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:42:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:00,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:42:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:42:00,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-07 23:42:00,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:42:00,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:00,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-07 23:42:00,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:00,174 INFO L124 PetriNetUnfolderBase]: 178/405 cut-off events. [2024-11-07 23:42:00,174 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 23:42:00,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 405 events. 178/405 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1880 event pairs, 149 based on Foata normal form. 17/341 useless extension candidates. Maximal degree in co-relation 654. Up to 273 conditions per place. [2024-11-07 23:42:00,178 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 22 selfloop transitions, 2 changer transitions 8/45 dead transitions. [2024-11-07 23:42:00,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 182 flow [2024-11-07 23:42:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:42:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:42:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-07 23:42:00,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5795454545454546 [2024-11-07 23:42:00,182 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 101 flow. Second operand 4 states and 102 transitions. [2024-11-07 23:42:00,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 182 flow [2024-11-07 23:42:00,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:42:00,183 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 110 flow [2024-11-07 23:42:00,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-11-07 23:42:00,184 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-07 23:42:00,184 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 110 flow [2024-11-07 23:42:00,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:42:00,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:00,187 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-07 23:42:00,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 23:42:00,187 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:00,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash 942694697, now seen corresponding path program 1 times [2024-11-07 23:42:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:00,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401366743] [2024-11-07 23:42:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:00,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:00,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401366743] [2024-11-07 23:42:00,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401366743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:00,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475402856] [2024-11-07 23:42:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:00,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:00,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:00,322 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 23:42:00,324 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 23:42:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:00,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:42:00,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:00,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:00,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475402856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:00,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:00,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-07 23:42:00,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181115114] [2024-11-07 23:42:00,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:00,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 23:42:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:00,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 23:42:00,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-07 23:42:00,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-07 23:42:00,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 110 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 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 23:42:00,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:00,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-07 23:42:00,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:00,703 INFO L124 PetriNetUnfolderBase]: 168/378 cut-off events. [2024-11-07 23:42:00,703 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-07 23:42:00,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 378 events. 168/378 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1803 event pairs, 136 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 775. Up to 277 conditions per place. [2024-11-07 23:42:00,707 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 22 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-11-07 23:42:00,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 214 flow [2024-11-07 23:42:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:42:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:42:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-11-07 23:42:00,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2024-11-07 23:42:00,710 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 110 flow. Second operand 10 states and 177 transitions. [2024-11-07 23:42:00,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 214 flow [2024-11-07 23:42:00,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:42:00,714 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 184 flow [2024-11-07 23:42:00,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-11-07 23:42:00,716 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-07 23:42:00,716 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 184 flow [2024-11-07 23:42:00,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 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 23:42:00,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:00,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:00,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 23:42:00,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:00,922 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:00,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:00,922 INFO L85 PathProgramCache]: Analyzing trace with hash -305460238, now seen corresponding path program 1 times [2024-11-07 23:42:00,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:00,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464172867] [2024-11-07 23:42:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:00,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464172867] [2024-11-07 23:42:01,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464172867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510575540] [2024-11-07 23:42:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:01,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:01,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:01,140 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 23:42:01,141 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 23:42:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:01,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:42:01,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:42:01,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:42:01,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510575540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:01,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:42:01,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-07 23:42:01,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325374662] [2024-11-07 23:42:01,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:01,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:42:01,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:42:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 23:42:01,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-07 23:42:01,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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 23:42:01,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:01,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-07 23:42:01,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:01,294 INFO L124 PetriNetUnfolderBase]: 109/258 cut-off events. [2024-11-07 23:42:01,294 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-07 23:42:01,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 258 events. 109/258 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1067 event pairs, 83 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 505. Up to 187 conditions per place. [2024-11-07 23:42:01,296 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 29 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2024-11-07 23:42:01,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 232 flow [2024-11-07 23:42:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:42:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:42:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-07 23:42:01,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-11-07 23:42:01,299 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 184 flow. Second operand 3 states and 70 transitions. [2024-11-07 23:42:01,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 232 flow [2024-11-07 23:42:01,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 204 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-07 23:42:01,303 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 146 flow [2024-11-07 23:42:01,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-07 23:42:01,304 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-11-07 23:42:01,304 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 146 flow [2024-11-07 23:42:01,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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 23:42:01,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:01,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:01,321 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 23:42:01,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:01,506 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:01,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:01,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1489495435, now seen corresponding path program 1 times [2024-11-07 23:42:01,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:01,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253226836] [2024-11-07 23:42:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:01,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:42:01,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:01,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253226836] [2024-11-07 23:42:01,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253226836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:01,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:01,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:42:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849660762] [2024-11-07 23:42:01,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:01,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:42:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:42:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:42:01,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 23:42:01,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 23:42:01,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:01,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 23:42:01,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:01,709 INFO L124 PetriNetUnfolderBase]: 211/464 cut-off events. [2024-11-07 23:42:01,709 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-07 23:42:01,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 464 events. 211/464 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2195 event pairs, 128 based on Foata normal form. 12/436 useless extension candidates. Maximal degree in co-relation 932. Up to 281 conditions per place. [2024-11-07 23:42:01,716 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-11-07 23:42:01,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 294 flow [2024-11-07 23:42:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:42:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:42:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-07 23:42:01,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-07 23:42:01,721 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 146 flow. Second operand 4 states and 94 transitions. [2024-11-07 23:42:01,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 294 flow [2024-11-07 23:42:01,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:42:01,723 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 174 flow [2024-11-07 23:42:01,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-11-07 23:42:01,724 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-07 23:42:01,724 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 174 flow [2024-11-07 23:42:01,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 23:42:01,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:01,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:01,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:42:01,726 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:01,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:01,727 INFO L85 PathProgramCache]: Analyzing trace with hash 382564061, now seen corresponding path program 1 times [2024-11-07 23:42:01,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:01,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205829744] [2024-11-07 23:42:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:01,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:42:01,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:01,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205829744] [2024-11-07 23:42:01,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205829744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:01,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:01,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:42:01,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550079937] [2024-11-07 23:42:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:01,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:42:01,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:42:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:42:01,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-07 23:42:01,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 23:42:01,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:01,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-07 23:42:01,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:01,890 INFO L124 PetriNetUnfolderBase]: 133/334 cut-off events. [2024-11-07 23:42:01,891 INFO L125 PetriNetUnfolderBase]: For 108/126 co-relation queries the response was YES. [2024-11-07 23:42:01,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 334 events. 133/334 cut-off events. For 108/126 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1550 event pairs, 40 based on Foata normal form. 12/316 useless extension candidates. Maximal degree in co-relation 748. Up to 184 conditions per place. [2024-11-07 23:42:01,895 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 35 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-11-07 23:42:01,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 268 flow [2024-11-07 23:42:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:42:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:42:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-07 23:42:01,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-11-07 23:42:01,897 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 174 flow. Second operand 3 states and 75 transitions. [2024-11-07 23:42:01,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 268 flow [2024-11-07 23:42:01,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:42:01,902 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 194 flow [2024-11-07 23:42:01,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-11-07 23:42:01,902 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-11-07 23:42:01,903 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 194 flow [2024-11-07 23:42:01,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 23:42:01,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:01,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:01,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:42:01,904 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:01,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1644374770, now seen corresponding path program 1 times [2024-11-07 23:42:01,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:01,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700473981] [2024-11-07 23:42:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:01,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:02,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:02,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700473981] [2024-11-07 23:42:02,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700473981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:02,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15229122] [2024-11-07 23:42:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:02,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:02,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:02,433 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 23:42:02,435 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 23:42:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:02,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 23:42:02,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:02,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:42:03,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-07 23:42:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:03,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:03,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-07 23:42:03,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-07 23:42:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:03,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15229122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:03,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:03,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2024-11-07 23:42:03,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141450725] [2024-11-07 23:42:03,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:03,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 23:42:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:03,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 23:42:03,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-07 23:42:03,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-07 23:42:03,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 194 flow. Second operand has 19 states, 19 states have (on average 11.894736842105264) internal successors, (226), 19 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 23:42:03,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:03,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-07 23:42:03,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:04,919 INFO L124 PetriNetUnfolderBase]: 465/993 cut-off events. [2024-11-07 23:42:04,919 INFO L125 PetriNetUnfolderBase]: For 536/591 co-relation queries the response was YES. [2024-11-07 23:42:04,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 993 events. 465/993 cut-off events. For 536/591 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5544 event pairs, 57 based on Foata normal form. 21/960 useless extension candidates. Maximal degree in co-relation 2493. Up to 289 conditions per place. [2024-11-07 23:42:04,927 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 87 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-11-07 23:42:04,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 679 flow [2024-11-07 23:42:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 23:42:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 23:42:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 242 transitions. [2024-11-07 23:42:04,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-07 23:42:04,929 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 194 flow. Second operand 14 states and 242 transitions. [2024-11-07 23:42:04,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 679 flow [2024-11-07 23:42:04,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 120 transitions, 630 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-07 23:42:04,934 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 305 flow [2024-11-07 23:42:04,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=305, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-11-07 23:42:04,935 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-11-07 23:42:04,935 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 305 flow [2024-11-07 23:42:04,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.894736842105264) internal successors, (226), 19 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 23:42:04,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:04,936 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-07 23:42:04,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 23:42:05,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:05,141 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:05,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1912923012, now seen corresponding path program 2 times [2024-11-07 23:42:05,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:05,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395271411] [2024-11-07 23:42:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:05,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:05,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:05,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395271411] [2024-11-07 23:42:05,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395271411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:05,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003252554] [2024-11-07 23:42:05,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:42:05,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:05,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:05,288 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 23:42:05,290 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 23:42:05,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:42:05,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:42:05,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 23:42:05,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:42:05,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-07 23:42:05,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003252554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:05,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:05,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-07 23:42:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193473319] [2024-11-07 23:42:05,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:05,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 23:42:05,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:05,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 23:42:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-07 23:42:05,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-07 23:42:05,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 305 flow. Second operand has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:42:05,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:05,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-07 23:42:05,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:05,694 INFO L124 PetriNetUnfolderBase]: 324/752 cut-off events. [2024-11-07 23:42:05,695 INFO L125 PetriNetUnfolderBase]: For 662/713 co-relation queries the response was YES. [2024-11-07 23:42:05,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 752 events. 324/752 cut-off events. For 662/713 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4297 event pairs, 212 based on Foata normal form. 14/723 useless extension candidates. Maximal degree in co-relation 1992. Up to 551 conditions per place. [2024-11-07 23:42:05,701 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 29 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-11-07 23:42:05,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 61 transitions, 409 flow [2024-11-07 23:42:05,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 23:42:05,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 23:42:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2024-11-07 23:42:05,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-07 23:42:05,703 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 305 flow. Second operand 14 states and 231 transitions. [2024-11-07 23:42:05,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 61 transitions, 409 flow [2024-11-07 23:42:05,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 61 transitions, 384 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-07 23:42:05,708 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 326 flow [2024-11-07 23:42:05,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=326, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2024-11-07 23:42:05,709 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-11-07 23:42:05,709 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 326 flow [2024-11-07 23:42:05,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:42:05,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:05,709 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:05,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 23:42:05,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-07 23:42:05,911 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:05,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1641938508, now seen corresponding path program 1 times [2024-11-07 23:42:05,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:05,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166770809] [2024-11-07 23:42:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:05,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:06,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:06,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166770809] [2024-11-07 23:42:06,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166770809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:06,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77008238] [2024-11-07 23:42:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:06,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:06,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:06,473 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 23:42:06,474 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 23:42:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:06,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 23:42:06,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:06,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:42:06,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 23:42:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:06,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:07,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-07 23:42:07,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-07 23:42:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:07,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77008238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:07,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:07,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-07 23:42:07,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823891162] [2024-11-07 23:42:07,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:07,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 23:42:07,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:07,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 23:42:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-07 23:42:07,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-07 23:42:07,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 326 flow. Second operand has 20 states, 20 states have (on average 12.8) internal successors, (256), 20 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 23:42:07,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:07,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-07 23:42:07,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:08,713 INFO L124 PetriNetUnfolderBase]: 377/865 cut-off events. [2024-11-07 23:42:08,714 INFO L125 PetriNetUnfolderBase]: For 643/693 co-relation queries the response was YES. [2024-11-07 23:42:08,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 865 events. 377/865 cut-off events. For 643/693 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4923 event pairs, 57 based on Foata normal form. 52/913 useless extension candidates. Maximal degree in co-relation 2318. Up to 304 conditions per place. [2024-11-07 23:42:08,721 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 82 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2024-11-07 23:42:08,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 745 flow [2024-11-07 23:42:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 23:42:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 23:42:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 250 transitions. [2024-11-07 23:42:08,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2024-11-07 23:42:08,723 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 326 flow. Second operand 14 states and 250 transitions. [2024-11-07 23:42:08,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 745 flow [2024-11-07 23:42:08,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 676 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-07 23:42:08,731 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 333 flow [2024-11-07 23:42:08,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=333, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2024-11-07 23:42:08,733 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-11-07 23:42:08,733 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 333 flow [2024-11-07 23:42:08,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.8) internal successors, (256), 20 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 23:42:08,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:08,735 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:08,753 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 23:42:08,939 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,SelfDestructingSolverStorable9 [2024-11-07 23:42:08,940 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:08,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1613686351, now seen corresponding path program 1 times [2024-11-07 23:42:08,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:08,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435135810] [2024-11-07 23:42:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:08,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:09,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435135810] [2024-11-07 23:42:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435135810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060458784] [2024-11-07 23:42:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:09,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:09,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:09,060 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 23:42:09,062 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 23:42:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:09,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 23:42:09,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:09,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:09,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060458784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:09,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:09,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-07 23:42:09,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517683719] [2024-11-07 23:42:09,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:09,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 23:42:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:09,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 23:42:09,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:42:09,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-07 23:42:09,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 333 flow. Second operand has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 23:42:09,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:09,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-07 23:42:09,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:09,522 INFO L124 PetriNetUnfolderBase]: 333/803 cut-off events. [2024-11-07 23:42:09,523 INFO L125 PetriNetUnfolderBase]: For 1197/1248 co-relation queries the response was YES. [2024-11-07 23:42:09,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 803 events. 333/803 cut-off events. For 1197/1248 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4742 event pairs, 203 based on Foata normal form. 54/810 useless extension candidates. Maximal degree in co-relation 2297. Up to 391 conditions per place. [2024-11-07 23:42:09,529 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 15 changer transitions 1/77 dead transitions. [2024-11-07 23:42:09,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 490 flow [2024-11-07 23:42:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 23:42:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 23:42:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-11-07 23:42:09,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-11-07 23:42:09,531 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 333 flow. Second operand 8 states and 158 transitions. [2024-11-07 23:42:09,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 490 flow [2024-11-07 23:42:09,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 452 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-07 23:42:09,540 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 302 flow [2024-11-07 23:42:09,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-11-07 23:42:09,542 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-11-07 23:42:09,542 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 302 flow [2024-11-07 23:42:09,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 23:42:09,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:09,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:09,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 23:42:09,743 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,SelfDestructingSolverStorable10 [2024-11-07 23:42:09,743 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:09,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1263755580, now seen corresponding path program 2 times [2024-11-07 23:42:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:09,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192070829] [2024-11-07 23:42:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:09,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:42:09,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:09,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192070829] [2024-11-07 23:42:09,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192070829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:09,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426688163] [2024-11-07 23:42:09,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:42:09,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:09,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:09,825 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 23:42:09,826 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 23:42:09,896 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:42:09,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:42:09,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 23:42:09,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:42:09,926 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:42:09,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426688163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:09,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:42:09,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-07 23:42:09,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524590531] [2024-11-07 23:42:09,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:09,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:42:09,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:42:09,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-07 23:42:09,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-07 23:42:09,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 23:42:09,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:09,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-07 23:42:09,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:10,098 INFO L124 PetriNetUnfolderBase]: 508/1106 cut-off events. [2024-11-07 23:42:10,099 INFO L125 PetriNetUnfolderBase]: For 1266/1290 co-relation queries the response was YES. [2024-11-07 23:42:10,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 1106 events. 508/1106 cut-off events. For 1266/1290 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6355 event pairs, 154 based on Foata normal form. 30/1087 useless extension candidates. Maximal degree in co-relation 3162. Up to 349 conditions per place. [2024-11-07 23:42:10,106 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 63 selfloop transitions, 7 changer transitions 1/80 dead transitions. [2024-11-07 23:42:10,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 556 flow [2024-11-07 23:42:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:42:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:42:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-07 23:42:10,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-11-07 23:42:10,108 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 302 flow. Second operand 4 states and 85 transitions. [2024-11-07 23:42:10,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 556 flow [2024-11-07 23:42:10,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 528 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-07 23:42:10,116 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 284 flow [2024-11-07 23:42:10,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-07 23:42:10,118 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-11-07 23:42:10,118 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 284 flow [2024-11-07 23:42:10,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 23:42:10,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:10,119 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:10,136 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 23:42:10,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:10,324 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:10,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash 521717857, now seen corresponding path program 1 times [2024-11-07 23:42:10,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:10,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692531] [2024-11-07 23:42:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:10,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:42:10,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:10,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692531] [2024-11-07 23:42:10,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983677044] [2024-11-07 23:42:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:10,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:10,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:10,380 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 23:42:10,382 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 23:42:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:10,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:42:10,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:42:10,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:42:10,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983677044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:10,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:10,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-07 23:42:10,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937932962] [2024-11-07 23:42:10,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:10,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:42:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:42:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:42:10,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 23:42:10,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:42:10,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:10,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 23:42:10,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:10,866 INFO L124 PetriNetUnfolderBase]: 728/1590 cut-off events. [2024-11-07 23:42:10,866 INFO L125 PetriNetUnfolderBase]: For 2569/2665 co-relation queries the response was YES. [2024-11-07 23:42:10,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4864 conditions, 1590 events. 728/1590 cut-off events. For 2569/2665 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8959 event pairs, 198 based on Foata normal form. 82/1641 useless extension candidates. Maximal degree in co-relation 4846. Up to 615 conditions per place. [2024-11-07 23:42:10,878 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 125 selfloop transitions, 13 changer transitions 0/148 dead transitions. [2024-11-07 23:42:10,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 148 transitions, 1032 flow [2024-11-07 23:42:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:42:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:42:10,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2024-11-07 23:42:10,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2024-11-07 23:42:10,880 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 284 flow. Second operand 10 states and 226 transitions. [2024-11-07 23:42:10,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 148 transitions, 1032 flow [2024-11-07 23:42:10,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 148 transitions, 1000 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:42:10,889 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 350 flow [2024-11-07 23:42:10,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-11-07 23:42:10,890 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-11-07 23:42:10,890 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 350 flow [2024-11-07 23:42:10,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:42:10,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:10,891 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:10,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 23:42:11,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:11,092 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:11,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:11,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1648289988, now seen corresponding path program 1 times [2024-11-07 23:42:11,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:11,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460765728] [2024-11-07 23:42:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:11,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460765728] [2024-11-07 23:42:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460765728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022484719] [2024-11-07 23:42:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:11,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:11,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:11,214 INFO L229 MonitoredProcess]: Starting monitored process 10 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 23:42:11,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 23:42:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:11,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 23:42:11,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:11,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:11,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022484719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:11,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:11,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-07 23:42:11,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976627395] [2024-11-07 23:42:11,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:11,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 23:42:11,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:11,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 23:42:11,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-07 23:42:11,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-07 23:42:11,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 350 flow. Second operand has 16 states, 16 states have (on average 15.75) internal successors, (252), 16 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 23:42:11,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:11,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-07 23:42:11,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:11,880 INFO L124 PetriNetUnfolderBase]: 544/1314 cut-off events. [2024-11-07 23:42:11,881 INFO L125 PetriNetUnfolderBase]: For 2121/2134 co-relation queries the response was YES. [2024-11-07 23:42:11,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4050 conditions, 1314 events. 544/1314 cut-off events. For 2121/2134 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7506 event pairs, 131 based on Foata normal form. 13/1272 useless extension candidates. Maximal degree in co-relation 4029. Up to 662 conditions per place. [2024-11-07 23:42:11,890 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 34 selfloop transitions, 16 changer transitions 26/92 dead transitions. [2024-11-07 23:42:11,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 585 flow [2024-11-07 23:42:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:42:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:42:11,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-11-07 23:42:11,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-11-07 23:42:11,895 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 350 flow. Second operand 10 states and 197 transitions. [2024-11-07 23:42:11,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 585 flow [2024-11-07 23:42:11,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 545 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-11-07 23:42:11,904 INFO L231 Difference]: Finished difference. Result has 84 places, 62 transitions, 321 flow [2024-11-07 23:42:11,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=84, PETRI_TRANSITIONS=62} [2024-11-07 23:42:11,905 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-11-07 23:42:11,905 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 62 transitions, 321 flow [2024-11-07 23:42:11,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.75) internal successors, (252), 16 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 23:42:11,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:11,906 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:11,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 23:42:12,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:12,106 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:12,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:12,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1778924590, now seen corresponding path program 2 times [2024-11-07 23:42:12,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:12,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277022602] [2024-11-07 23:42:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:12,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:12,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:12,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277022602] [2024-11-07 23:42:12,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277022602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:12,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672536436] [2024-11-07 23:42:12,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:42:12,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:12,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:12,936 INFO L229 MonitoredProcess]: Starting monitored process 11 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 23:42:12,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 23:42:13,006 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:42:13,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:42:13,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 23:42:13,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:42:13,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:42:13,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672536436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:13,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:42:13,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-11-07 23:42:13,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120352416] [2024-11-07 23:42:13,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:13,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:42:13,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:13,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:42:13,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:42:13,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-07 23:42:13,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 62 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 23:42:13,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:13,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-07 23:42:13,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:13,318 INFO L124 PetriNetUnfolderBase]: 657/1509 cut-off events. [2024-11-07 23:42:13,318 INFO L125 PetriNetUnfolderBase]: For 2395/2421 co-relation queries the response was YES. [2024-11-07 23:42:13,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 1509 events. 657/1509 cut-off events. For 2395/2421 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8673 event pairs, 44 based on Foata normal form. 52/1558 useless extension candidates. Maximal degree in co-relation 4595. Up to 435 conditions per place. [2024-11-07 23:42:13,329 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 80 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2024-11-07 23:42:13,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 102 transitions, 687 flow [2024-11-07 23:42:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:42:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:42:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-07 23:42:13,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-07 23:42:13,331 INFO L175 Difference]: Start difference. First operand has 84 places, 62 transitions, 321 flow. Second operand 5 states and 120 transitions. [2024-11-07 23:42:13,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 102 transitions, 687 flow [2024-11-07 23:42:13,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 102 transitions, 636 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-11-07 23:42:13,337 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 336 flow [2024-11-07 23:42:13,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-11-07 23:42:13,338 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-11-07 23:42:13,338 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 336 flow [2024-11-07 23:42:13,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 23:42:13,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:13,339 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:13,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 23:42:13,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 23:42:13,539 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:13,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash -31652052, now seen corresponding path program 1 times [2024-11-07 23:42:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:13,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442030686] [2024-11-07 23:42:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:14,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:14,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442030686] [2024-11-07 23:42:14,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442030686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:14,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146587299] [2024-11-07 23:42:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:14,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:14,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:14,326 INFO L229 MonitoredProcess]: Starting monitored process 12 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 23:42:14,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 23:42:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:14,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 23:42:14,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:42:14,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:14,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:42:14,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-07 23:42:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:42:14,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146587299] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:14,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 23:42:14,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 7] total 20 [2024-11-07 23:42:14,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994977020] [2024-11-07 23:42:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:14,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:42:14,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:14,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:42:14,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-11-07 23:42:14,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-07 23:42:14,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 23:42:14,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:14,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-07 23:42:14,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:14,939 INFO L124 PetriNetUnfolderBase]: 883/1751 cut-off events. [2024-11-07 23:42:14,939 INFO L125 PetriNetUnfolderBase]: For 2436/2478 co-relation queries the response was YES. [2024-11-07 23:42:14,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5363 conditions, 1751 events. 883/1751 cut-off events. For 2436/2478 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9553 event pairs, 26 based on Foata normal form. 7/1756 useless extension candidates. Maximal degree in co-relation 5342. Up to 511 conditions per place. [2024-11-07 23:42:14,953 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 76 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-11-07 23:42:14,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 657 flow [2024-11-07 23:42:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:42:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:42:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-11-07 23:42:14,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-11-07 23:42:14,956 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 336 flow. Second operand 5 states and 107 transitions. [2024-11-07 23:42:14,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 657 flow [2024-11-07 23:42:14,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:42:14,962 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 393 flow [2024-11-07 23:42:14,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-11-07 23:42:14,963 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-11-07 23:42:14,963 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 393 flow [2024-11-07 23:42:14,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 23:42:14,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:14,964 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:14,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-07 23:42:15,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 23:42:15,165 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:15,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1562821524, now seen corresponding path program 2 times [2024-11-07 23:42:15,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:15,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322928211] [2024-11-07 23:42:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:15,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:15,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322928211] [2024-11-07 23:42:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322928211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774142823] [2024-11-07 23:42:15,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:42:15,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:15,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:15,903 INFO L229 MonitoredProcess]: Starting monitored process 13 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 23:42:15,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 23:42:15,974 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 23:42:15,974 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:42:15,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 23:42:15,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:42:16,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:42:16,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774142823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:16,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:42:16,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-11-07 23:42:16,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963346677] [2024-11-07 23:42:16,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:16,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:42:16,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:16,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:42:16,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-07 23:42:16,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-07 23:42:16,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 393 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 23:42:16,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:16,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-07 23:42:16,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:16,289 INFO L124 PetriNetUnfolderBase]: 672/1505 cut-off events. [2024-11-07 23:42:16,289 INFO L125 PetriNetUnfolderBase]: For 3562/3588 co-relation queries the response was YES. [2024-11-07 23:42:16,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4956 conditions, 1505 events. 672/1505 cut-off events. For 3562/3588 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8498 event pairs, 47 based on Foata normal form. 27/1526 useless extension candidates. Maximal degree in co-relation 4931. Up to 548 conditions per place. [2024-11-07 23:42:16,301 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 80 selfloop transitions, 9 changer transitions 0/104 dead transitions. [2024-11-07 23:42:16,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 734 flow [2024-11-07 23:42:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:42:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:42:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-07 23:42:16,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363636363636364 [2024-11-07 23:42:16,303 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 393 flow. Second operand 5 states and 118 transitions. [2024-11-07 23:42:16,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 734 flow [2024-11-07 23:42:16,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 104 transitions, 718 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 23:42:16,312 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 428 flow [2024-11-07 23:42:16,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-11-07 23:42:16,313 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-11-07 23:42:16,313 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 428 flow [2024-11-07 23:42:16,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 23:42:16,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:16,314 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:16,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-07 23:42:16,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-07 23:42:16,515 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:16,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash -981213060, now seen corresponding path program 1 times [2024-11-07 23:42:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:16,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384899263] [2024-11-07 23:42:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:17,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:17,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384899263] [2024-11-07 23:42:17,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384899263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:17,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317026745] [2024-11-07 23:42:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:17,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:17,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:17,380 INFO L229 MonitoredProcess]: Starting monitored process 14 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 23:42:17,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-07 23:42:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:17,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 23:42:17,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:42:17,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:17,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:42:17,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-07 23:42:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:42:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317026745] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:17,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 23:42:17,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 7] total 20 [2024-11-07 23:42:17,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205648311] [2024-11-07 23:42:17,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:17,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:42:17,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:17,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:42:17,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-07 23:42:17,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-07 23:42:17,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:42:17,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:17,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-07 23:42:17,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:17,956 INFO L124 PetriNetUnfolderBase]: 706/1526 cut-off events. [2024-11-07 23:42:17,956 INFO L125 PetriNetUnfolderBase]: For 4353/4389 co-relation queries the response was YES. [2024-11-07 23:42:17,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5215 conditions, 1526 events. 706/1526 cut-off events. For 4353/4389 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8486 event pairs, 185 based on Foata normal form. 7/1501 useless extension candidates. Maximal degree in co-relation 5188. Up to 947 conditions per place. [2024-11-07 23:42:17,970 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 70 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-11-07 23:42:17,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 686 flow [2024-11-07 23:42:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:42:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:42:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-11-07 23:42:17,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 23:42:17,972 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 428 flow. Second operand 5 states and 110 transitions. [2024-11-07 23:42:17,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 686 flow [2024-11-07 23:42:17,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 663 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 23:42:17,980 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 446 flow [2024-11-07 23:42:17,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-11-07 23:42:17,981 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-07 23:42:17,981 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 446 flow [2024-11-07 23:42:17,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:42:17,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:17,982 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:17,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-07 23:42:18,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 23:42:18,183 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:18,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:18,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1669338137, now seen corresponding path program 2 times [2024-11-07 23:42:18,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:18,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86362272] [2024-11-07 23:42:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:18,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 23:42:18,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:18,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86362272] [2024-11-07 23:42:18,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86362272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:42:18,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:42:18,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:42:18,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127284571] [2024-11-07 23:42:18,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:42:18,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:42:18,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:18,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:42:18,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:42:18,235 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-07 23:42:18,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 23:42:18,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:18,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-07 23:42:18,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:18,458 INFO L124 PetriNetUnfolderBase]: 807/1989 cut-off events. [2024-11-07 23:42:18,458 INFO L125 PetriNetUnfolderBase]: For 6114/6282 co-relation queries the response was YES. [2024-11-07 23:42:18,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6688 conditions, 1989 events. 807/1989 cut-off events. For 6114/6282 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12255 event pairs, 135 based on Foata normal form. 47/2013 useless extension candidates. Maximal degree in co-relation 6661. Up to 717 conditions per place. [2024-11-07 23:42:18,470 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 79 selfloop transitions, 11 changer transitions 7/114 dead transitions. [2024-11-07 23:42:18,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 895 flow [2024-11-07 23:42:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:42:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:42:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-07 23:42:18,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2024-11-07 23:42:18,473 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 446 flow. Second operand 4 states and 109 transitions. [2024-11-07 23:42:18,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 895 flow [2024-11-07 23:42:18,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 862 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-07 23:42:18,483 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 478 flow [2024-11-07 23:42:18,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2024-11-07 23:42:18,483 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-11-07 23:42:18,483 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 478 flow [2024-11-07 23:42:18,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 23:42:18,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:18,484 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:18,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 23:42:18,484 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:18,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:18,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1459449365, now seen corresponding path program 1 times [2024-11-07 23:42:18,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:18,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734660817] [2024-11-07 23:42:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:18,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:19,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:19,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734660817] [2024-11-07 23:42:19,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734660817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:19,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259623187] [2024-11-07 23:42:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:19,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:19,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:19,114 INFO L229 MonitoredProcess]: Starting monitored process 15 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 23:42:19,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-07 23:42:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:19,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 23:42:19,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:19,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:20,050 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-07 23:42:20,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 42 [2024-11-07 23:42:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:20,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259623187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:20,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:20,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-11-07 23:42:20,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126917012] [2024-11-07 23:42:20,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:20,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 23:42:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:20,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 23:42:20,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 23:42:20,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-07 23:42:20,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 478 flow. Second operand has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 23:42:20,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:20,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-07 23:42:20,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:22,712 INFO L124 PetriNetUnfolderBase]: 1993/4181 cut-off events. [2024-11-07 23:42:22,712 INFO L125 PetriNetUnfolderBase]: For 15404/15662 co-relation queries the response was YES. [2024-11-07 23:42:22,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15016 conditions, 4181 events. 1993/4181 cut-off events. For 15404/15662 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 28591 event pairs, 218 based on Foata normal form. 255/4425 useless extension candidates. Maximal degree in co-relation 14987. Up to 1122 conditions per place. [2024-11-07 23:42:22,735 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 283 selfloop transitions, 75 changer transitions 6/375 dead transitions. [2024-11-07 23:42:22,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 375 transitions, 2902 flow [2024-11-07 23:42:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-07 23:42:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-07 23:42:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 686 transitions. [2024-11-07 23:42:22,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3802660753880266 [2024-11-07 23:42:22,737 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 478 flow. Second operand 41 states and 686 transitions. [2024-11-07 23:42:22,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 375 transitions, 2902 flow [2024-11-07 23:42:22,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 375 transitions, 2799 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-11-07 23:42:22,763 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 1423 flow [2024-11-07 23:42:22,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1423, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2024-11-07 23:42:22,763 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-11-07 23:42:22,764 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 1423 flow [2024-11-07 23:42:22,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 23:42:22,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:22,764 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:22,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-07 23:42:22,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:22,969 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:22,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:22,969 INFO L85 PathProgramCache]: Analyzing trace with hash 72737377, now seen corresponding path program 2 times [2024-11-07 23:42:22,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:22,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276926432] [2024-11-07 23:42:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:22,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:23,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:23,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276926432] [2024-11-07 23:42:23,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276926432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:23,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753201126] [2024-11-07 23:42:23,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:42:23,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:23,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:23,557 INFO L229 MonitoredProcess]: Starting monitored process 16 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 23:42:23,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-07 23:42:23,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:42:23,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:42:23,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 23:42:23,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:23,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-07 23:42:24,078 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:42:24,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-07 23:42:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:24,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:24,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-07 23:42:24,633 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-07 23:42:24,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-11-07 23:42:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753201126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:24,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:24,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2024-11-07 23:42:24,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244614708] [2024-11-07 23:42:24,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:24,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-07 23:42:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-07 23:42:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2024-11-07 23:42:24,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-07 23:42:24,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 1423 flow. Second operand has 38 states, 38 states have (on average 11.526315789473685) internal successors, (438), 38 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 23:42:24,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:24,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-07 23:42:24,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:28,511 INFO L124 PetriNetUnfolderBase]: 4179/8690 cut-off events. [2024-11-07 23:42:28,511 INFO L125 PetriNetUnfolderBase]: For 76835/77342 co-relation queries the response was YES. [2024-11-07 23:42:28,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38672 conditions, 8690 events. 4179/8690 cut-off events. For 76835/77342 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 64662 event pairs, 602 based on Foata normal form. 423/9079 useless extension candidates. Maximal degree in co-relation 38624. Up to 1389 conditions per place. [2024-11-07 23:42:28,582 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 439 selfloop transitions, 150 changer transitions 22/622 dead transitions. [2024-11-07 23:42:28,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 622 transitions, 6328 flow [2024-11-07 23:42:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-07 23:42:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-07 23:42:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 980 transitions. [2024-11-07 23:42:28,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4202401372212693 [2024-11-07 23:42:28,585 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 1423 flow. Second operand 53 states and 980 transitions. [2024-11-07 23:42:28,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 622 transitions, 6328 flow [2024-11-07 23:42:28,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 622 transitions, 6016 flow, removed 132 selfloop flow, removed 10 redundant places. [2024-11-07 23:42:28,789 INFO L231 Difference]: Finished difference. Result has 207 places, 268 transitions, 3710 flow [2024-11-07 23:42:28,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=3710, PETRI_PLACES=207, PETRI_TRANSITIONS=268} [2024-11-07 23:42:28,791 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 164 predicate places. [2024-11-07 23:42:28,791 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 268 transitions, 3710 flow [2024-11-07 23:42:28,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 11.526315789473685) internal successors, (438), 38 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 23:42:28,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:28,791 INFO L204 CegarLoopForPetriNet]: 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] [2024-11-07 23:42:28,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-07 23:42:28,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:28,996 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:28,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1789154417, now seen corresponding path program 1 times [2024-11-07 23:42:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:28,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844993702] [2024-11-07 23:42:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:28,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:29,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844993702] [2024-11-07 23:42:29,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844993702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492049663] [2024-11-07 23:42:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:29,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:29,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:29,589 INFO L229 MonitoredProcess]: Starting monitored process 17 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 23:42:29,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-07 23:42:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:29,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 23:42:29,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:30,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:30,316 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-07 23:42:30,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 42 [2024-11-07 23:42:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:30,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492049663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:30,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:30,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-11-07 23:42:30,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786278346] [2024-11-07 23:42:30,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:30,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 23:42:30,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:30,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 23:42:30,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 23:42:30,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-07 23:42:30,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 268 transitions, 3710 flow. Second operand has 36 states, 36 states have (on average 11.694444444444445) internal successors, (421), 36 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:42:30,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:30,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-07 23:42:30,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:33,178 INFO L124 PetriNetUnfolderBase]: 4201/8797 cut-off events. [2024-11-07 23:42:33,178 INFO L125 PetriNetUnfolderBase]: For 137335/137807 co-relation queries the response was YES. [2024-11-07 23:42:33,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45295 conditions, 8797 events. 4201/8797 cut-off events. For 137335/137807 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 65883 event pairs, 629 based on Foata normal form. 49/8817 useless extension candidates. Maximal degree in co-relation 45219. Up to 3357 conditions per place. [2024-11-07 23:42:33,257 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 361 selfloop transitions, 124 changer transitions 3/499 dead transitions. [2024-11-07 23:42:33,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 499 transitions, 6270 flow [2024-11-07 23:42:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-07 23:42:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-07 23:42:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 549 transitions. [2024-11-07 23:42:33,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3669786096256685 [2024-11-07 23:42:33,259 INFO L175 Difference]: Start difference. First operand has 207 places, 268 transitions, 3710 flow. Second operand 34 states and 549 transitions. [2024-11-07 23:42:33,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 499 transitions, 6270 flow [2024-11-07 23:42:33,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 499 transitions, 5392 flow, removed 424 selfloop flow, removed 10 redundant places. [2024-11-07 23:42:33,890 INFO L231 Difference]: Finished difference. Result has 236 places, 287 transitions, 3742 flow [2024-11-07 23:42:33,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3742, PETRI_PLACES=236, PETRI_TRANSITIONS=287} [2024-11-07 23:42:33,891 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-11-07 23:42:33,891 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 287 transitions, 3742 flow [2024-11-07 23:42:33,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.694444444444445) internal successors, (421), 36 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:42:33,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:33,891 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:33,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-07 23:42:34,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:34,092 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:34,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:34,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1747540903, now seen corresponding path program 1 times [2024-11-07 23:42:34,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:34,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587278803] [2024-11-07 23:42:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:34,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:34,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:34,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587278803] [2024-11-07 23:42:34,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587278803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:34,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747782136] [2024-11-07 23:42:34,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:34,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:34,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:34,659 INFO L229 MonitoredProcess]: Starting monitored process 18 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 23:42:34,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-07 23:42:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:34,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 23:42:34,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:35,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:35,531 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-07 23:42:35,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 41 [2024-11-07 23:42:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:35,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747782136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:35,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:35,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-11-07 23:42:35,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254591956] [2024-11-07 23:42:35,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:35,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 23:42:35,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 23:42:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 23:42:36,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-07 23:42:36,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 287 transitions, 3742 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 23:42:36,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:36,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-07 23:42:36,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:38,379 INFO L124 PetriNetUnfolderBase]: 3729/8559 cut-off events. [2024-11-07 23:42:38,379 INFO L125 PetriNetUnfolderBase]: For 134907/135364 co-relation queries the response was YES. [2024-11-07 23:42:38,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43121 conditions, 8559 events. 3729/8559 cut-off events. For 134907/135364 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 68715 event pairs, 338 based on Foata normal form. 150/8680 useless extension candidates. Maximal degree in co-relation 43038. Up to 4392 conditions per place. [2024-11-07 23:42:38,462 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 301 selfloop transitions, 69 changer transitions 31/462 dead transitions. [2024-11-07 23:42:38,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 462 transitions, 5865 flow [2024-11-07 23:42:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 23:42:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-07 23:42:38,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 471 transitions. [2024-11-07 23:42:38,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3823051948051948 [2024-11-07 23:42:38,464 INFO L175 Difference]: Start difference. First operand has 236 places, 287 transitions, 3742 flow. Second operand 28 states and 471 transitions. [2024-11-07 23:42:38,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 462 transitions, 5865 flow [2024-11-07 23:42:39,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 462 transitions, 5697 flow, removed 38 selfloop flow, removed 22 redundant places. [2024-11-07 23:42:39,112 INFO L231 Difference]: Finished difference. Result has 248 places, 298 transitions, 3984 flow [2024-11-07 23:42:39,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3984, PETRI_PLACES=248, PETRI_TRANSITIONS=298} [2024-11-07 23:42:39,113 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-11-07 23:42:39,113 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 298 transitions, 3984 flow [2024-11-07 23:42:39,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 23:42:39,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:39,114 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:39,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-07 23:42:39,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:39,318 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:39,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2040108057, now seen corresponding path program 2 times [2024-11-07 23:42:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118928062] [2024-11-07 23:42:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:39,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118928062] [2024-11-07 23:42:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118928062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897055248] [2024-11-07 23:42:40,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 23:42:40,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:40,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:40,041 INFO L229 MonitoredProcess]: Starting monitored process 19 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 23:42:40,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-07 23:42:40,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 23:42:40,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:42:40,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-07 23:42:40,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:40,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 23:42:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:40,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:41,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2024-11-07 23:42:41,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:42:41,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 135 [2024-11-07 23:42:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:41,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897055248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:41,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:41,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-11-07 23:42:41,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824468207] [2024-11-07 23:42:41,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:41,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 23:42:41,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:41,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 23:42:41,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 23:42:41,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-07 23:42:41,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 298 transitions, 3984 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 23:42:41,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:41,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-07 23:42:41,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:44,664 INFO L124 PetriNetUnfolderBase]: 3843/8672 cut-off events. [2024-11-07 23:42:44,664 INFO L125 PetriNetUnfolderBase]: For 171242/171727 co-relation queries the response was YES. [2024-11-07 23:42:44,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46774 conditions, 8672 events. 3843/8672 cut-off events. For 171242/171727 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 69564 event pairs, 631 based on Foata normal form. 194/8783 useless extension candidates. Maximal degree in co-relation 46683. Up to 4122 conditions per place. [2024-11-07 23:42:44,752 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 373 selfloop transitions, 83 changer transitions 11/527 dead transitions. [2024-11-07 23:42:44,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 527 transitions, 6599 flow [2024-11-07 23:42:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-07 23:42:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-07 23:42:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 644 transitions. [2024-11-07 23:42:44,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-11-07 23:42:44,754 INFO L175 Difference]: Start difference. First operand has 248 places, 298 transitions, 3984 flow. Second operand 37 states and 644 transitions. [2024-11-07 23:42:44,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 527 transitions, 6599 flow [2024-11-07 23:42:45,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 527 transitions, 6409 flow, removed 53 selfloop flow, removed 23 redundant places. [2024-11-07 23:42:45,587 INFO L231 Difference]: Finished difference. Result has 262 places, 312 transitions, 4404 flow [2024-11-07 23:42:45,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4404, PETRI_PLACES=262, PETRI_TRANSITIONS=312} [2024-11-07 23:42:45,588 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2024-11-07 23:42:45,588 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 312 transitions, 4404 flow [2024-11-07 23:42:45,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 23:42:45,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:45,589 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:45,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-07 23:42:45,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-07 23:42:45,789 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:45,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1045491088, now seen corresponding path program 3 times [2024-11-07 23:42:45,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:45,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299848984] [2024-11-07 23:42:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:45,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:46,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:46,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299848984] [2024-11-07 23:42:46,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299848984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:46,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901013177] [2024-11-07 23:42:46,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 23:42:46,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:46,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:46,479 INFO L229 MonitoredProcess]: Starting monitored process 20 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 23:42:46,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-07 23:42:46,553 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 23:42:46,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:42:46,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 23:42:46,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:42:46,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:46,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:42:46,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-07 23:42:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:42:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901013177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:46,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:46,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 24 [2024-11-07 23:42:46,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322638917] [2024-11-07 23:42:46,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:46,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 23:42:46,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 23:42:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2024-11-07 23:42:46,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-07 23:42:46,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 312 transitions, 4404 flow. Second operand has 26 states, 26 states have (on average 11.653846153846153) internal successors, (303), 26 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 23:42:46,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:46,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-07 23:42:46,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:50,024 INFO L124 PetriNetUnfolderBase]: 5757/12100 cut-off events. [2024-11-07 23:42:50,024 INFO L125 PetriNetUnfolderBase]: For 244885/245551 co-relation queries the response was YES. [2024-11-07 23:42:50,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66406 conditions, 12100 events. 5757/12100 cut-off events. For 244885/245551 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 97535 event pairs, 826 based on Foata normal form. 353/12404 useless extension candidates. Maximal degree in co-relation 66311. Up to 4571 conditions per place. [2024-11-07 23:42:50,175 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 436 selfloop transitions, 228 changer transitions 12/687 dead transitions. [2024-11-07 23:42:50,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 687 transitions, 9505 flow [2024-11-07 23:42:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-07 23:42:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-07 23:42:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 685 transitions. [2024-11-07 23:42:50,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3991841491841492 [2024-11-07 23:42:50,177 INFO L175 Difference]: Start difference. First operand has 262 places, 312 transitions, 4404 flow. Second operand 39 states and 685 transitions. [2024-11-07 23:42:50,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 687 transitions, 9505 flow [2024-11-07 23:42:51,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 687 transitions, 9278 flow, removed 77 selfloop flow, removed 17 redundant places. [2024-11-07 23:42:51,431 INFO L231 Difference]: Finished difference. Result has 296 places, 400 transitions, 6550 flow [2024-11-07 23:42:51,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4205, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6550, PETRI_PLACES=296, PETRI_TRANSITIONS=400} [2024-11-07 23:42:51,432 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-11-07 23:42:51,432 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 400 transitions, 6550 flow [2024-11-07 23:42:51,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.653846153846153) internal successors, (303), 26 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 23:42:51,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:51,432 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:51,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-07 23:42:51,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:51,633 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:51,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1130900288, now seen corresponding path program 4 times [2024-11-07 23:42:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809986940] [2024-11-07 23:42:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:42:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:42:52,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:42:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809986940] [2024-11-07 23:42:52,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809986940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:42:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124360536] [2024-11-07 23:42:52,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 23:42:52,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:42:52,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:42:52,376 INFO L229 MonitoredProcess]: Starting monitored process 21 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 23:42:52,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-07 23:42:52,452 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 23:42:52,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:42:52,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 23:42:52,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:42:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 23:42:52,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:42:52,680 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 23:42:52,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-11-07 23:42:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-07 23:42:52,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124360536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:42:52,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:42:52,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 6] total 26 [2024-11-07 23:42:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369019027] [2024-11-07 23:42:52,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:42:52,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-07 23:42:52,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:42:52,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-07 23:42:52,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-07 23:42:52,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-07 23:42:52,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 400 transitions, 6550 flow. Second operand has 28 states, 28 states have (on average 11.642857142857142) internal successors, (326), 28 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 23:42:52,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:42:52,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-07 23:42:52,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:42:56,900 INFO L124 PetriNetUnfolderBase]: 8280/17455 cut-off events. [2024-11-07 23:42:56,900 INFO L125 PetriNetUnfolderBase]: For 456916/457774 co-relation queries the response was YES. [2024-11-07 23:42:57,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105203 conditions, 17455 events. 8280/17455 cut-off events. For 456916/457774 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 151836 event pairs, 542 based on Foata normal form. 453/17864 useless extension candidates. Maximal degree in co-relation 105090. Up to 4003 conditions per place. [2024-11-07 23:42:57,111 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 530 selfloop transitions, 364 changer transitions 21/926 dead transitions. [2024-11-07 23:42:57,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 926 transitions, 15134 flow [2024-11-07 23:42:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-07 23:42:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-07 23:42:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 791 transitions. [2024-11-07 23:42:57,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40857438016528924 [2024-11-07 23:42:57,114 INFO L175 Difference]: Start difference. First operand has 296 places, 400 transitions, 6550 flow. Second operand 44 states and 791 transitions. [2024-11-07 23:42:57,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 926 transitions, 15134 flow [2024-11-07 23:42:59,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 926 transitions, 14274 flow, removed 268 selfloop flow, removed 11 redundant places. [2024-11-07 23:42:59,586 INFO L231 Difference]: Finished difference. Result has 356 places, 539 transitions, 9950 flow [2024-11-07 23:42:59,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=9950, PETRI_PLACES=356, PETRI_TRANSITIONS=539} [2024-11-07 23:42:59,586 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-11-07 23:42:59,587 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 539 transitions, 9950 flow [2024-11-07 23:42:59,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.642857142857142) internal successors, (326), 28 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 23:42:59,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:42:59,587 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:42:59,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-07 23:42:59,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-07 23:42:59,787 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:42:59,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:42:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1713348146, now seen corresponding path program 5 times [2024-11-07 23:42:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:42:59,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309962547] [2024-11-07 23:42:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:42:59,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:42:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:43:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309962547] [2024-11-07 23:43:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309962547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022037735] [2024-11-07 23:43:00,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 23:43:00,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:00,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:00,425 INFO L229 MonitoredProcess]: Starting monitored process 22 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 23:43:00,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-07 23:43:00,508 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 23:43:00,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:43:00,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 23:43:00,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 23:43:00,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:43:01,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:43:01,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 73 [2024-11-07 23:43:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:43:01,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022037735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:43:01,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:43:01,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 7] total 32 [2024-11-07 23:43:01,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692717484] [2024-11-07 23:43:01,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:43:01,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 23:43:01,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 23:43:01,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 23:43:01,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-07 23:43:01,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 539 transitions, 9950 flow. Second operand has 34 states, 34 states have (on average 10.823529411764707) internal successors, (368), 34 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 23:43:01,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:01,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-07 23:43:01,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:43:07,910 INFO L124 PetriNetUnfolderBase]: 10348/20998 cut-off events. [2024-11-07 23:43:07,910 INFO L125 PetriNetUnfolderBase]: For 648007/648493 co-relation queries the response was YES. [2024-11-07 23:43:08,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123670 conditions, 20998 events. 10348/20998 cut-off events. For 648007/648493 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 182194 event pairs, 838 based on Foata normal form. 402/21291 useless extension candidates. Maximal degree in co-relation 123530. Up to 3331 conditions per place. [2024-11-07 23:43:08,367 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 509 selfloop transitions, 351 changer transitions 10/880 dead transitions. [2024-11-07 23:43:08,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 880 transitions, 15733 flow [2024-11-07 23:43:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-07 23:43:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-07 23:43:08,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 639 transitions. [2024-11-07 23:43:08,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3723776223776224 [2024-11-07 23:43:08,368 INFO L175 Difference]: Start difference. First operand has 356 places, 539 transitions, 9950 flow. Second operand 39 states and 639 transitions. [2024-11-07 23:43:08,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 880 transitions, 15733 flow [2024-11-07 23:43:11,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 880 transitions, 15062 flow, removed 211 selfloop flow, removed 17 redundant places. [2024-11-07 23:43:11,443 INFO L231 Difference]: Finished difference. Result has 382 places, 577 transitions, 11456 flow [2024-11-07 23:43:11,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9186, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11456, PETRI_PLACES=382, PETRI_TRANSITIONS=577} [2024-11-07 23:43:11,444 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-11-07 23:43:11,444 INFO L471 AbstractCegarLoop]: Abstraction has has 382 places, 577 transitions, 11456 flow [2024-11-07 23:43:11,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.823529411764707) internal successors, (368), 34 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 23:43:11,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:43:11,445 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:43:11,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-07 23:43:11,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-07 23:43:11,645 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-07 23:43:11,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:43:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1230524702, now seen corresponding path program 3 times [2024-11-07 23:43:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:43:11,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413006517] [2024-11-07 23:43:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:43:11,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:43:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:43:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:43:12,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:43:12,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413006517] [2024-11-07 23:43:12,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413006517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:43:12,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008646221] [2024-11-07 23:43:12,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 23:43:12,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:43:12,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:43:12,813 INFO L229 MonitoredProcess]: Starting monitored process 23 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 23:43:12,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-07 23:43:12,920 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 23:43:12,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 23:43:12,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 23:43:12,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:43:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:43:13,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:43:13,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 23:43:13,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2024-11-07 23:43:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 23:43:13,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008646221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:43:13,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:43:13,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 26 [2024-11-07 23:43:13,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587959996] [2024-11-07 23:43:13,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:43:13,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-07 23:43:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:43:13,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-07 23:43:13,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2024-11-07 23:43:13,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-07 23:43:13,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 577 transitions, 11456 flow. Second operand has 28 states, 28 states have (on average 12.892857142857142) internal successors, (361), 28 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 23:43:13,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:43:13,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-07 23:43:13,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand