./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-1.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/parallel-misc-1.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', 'faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4'] 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/parallel-misc-1.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 faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:38:19,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:38:19,644 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:38:19,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:38:19,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:38:19,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:38:19,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:38:19,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:38:19,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:38:19,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:38:19,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:38:19,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:38:19,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:38:19,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:38:19,686 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:38:19,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:38:19,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:38:19,686 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:38:19,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:38:19,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:38:19,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:38:19,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:38:19,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:38:19,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:38:19,687 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:38:19,687 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:38:19,688 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:38:19,688 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:38:19,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:38:19,688 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:38:19,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:38:19,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:38:19,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:38:19,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:38:19,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:38:19,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:38:19,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:38:19,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:38:19,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:38:19,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:38:19,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:38:19,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:38:19,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:38:19,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:38:19,690 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 -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2024-11-07 23:38:19,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:38:19,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:38:19,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:38:19,996 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:38:19,996 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:38:19,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-07 23:38:21,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:38:21,522 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:38:21,523 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-07 23:38:21,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88f6798c9/ad78d0b6c7ca43f696661ff5578a91b9/FLAG9d6b15ba5 [2024-11-07 23:38:21,549 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88f6798c9/ad78d0b6c7ca43f696661ff5578a91b9 [2024-11-07 23:38:21,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:38:21,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:38:21,556 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:38:21,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:38:21,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:38:21,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca918b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21, skipping insertion in model container [2024-11-07 23:38:21,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:38:21,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:38:21,761 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:38:21,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:38:21,811 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:38:21,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21 WrapperNode [2024-11-07 23:38:21,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:38:21,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:38:21,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:38:21,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:38:21,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,856 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 397 [2024-11-07 23:38:21,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:38:21,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:38:21,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:38:21,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:38:21,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,873 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,900 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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 23:38:21,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,918 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,924 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:38:21,929 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:38:21,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:38:21,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:38:21,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (1/1) ... [2024-11-07 23:38:21,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:38:21,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:38:21,974 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 23:38:21,979 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 23:38:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:38:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:38:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:38:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:38:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:38:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:38:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 23:38:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 23:38:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 23:38:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 23:38:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:38:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:38:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 23:38:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 23:38:22,003 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 23:38:22,117 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:38:22,119 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:38:22,770 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:38:22,770 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:38:23,168 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:38:23,169 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 23:38:23,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:38:23 BoogieIcfgContainer [2024-11-07 23:38:23,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:38:23,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:38:23,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:38:23,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:38:23,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:38:21" (1/3) ... [2024-11-07 23:38:23,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b06064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:38:23, skipping insertion in model container [2024-11-07 23:38:23,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:38:21" (2/3) ... [2024-11-07 23:38:23,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b06064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:38:23, skipping insertion in model container [2024-11-07 23:38:23,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:38:23" (3/3) ... [2024-11-07 23:38:23,180 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2024-11-07 23:38:23,194 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:38:23,194 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2024-11-07 23:38:23,194 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:38:23,297 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 23:38:23,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 374 flow [2024-11-07 23:38:23,419 INFO L124 PetriNetUnfolderBase]: 21/178 cut-off events. [2024-11-07 23:38:23,421 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 23:38:23,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 21/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 838 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2024-11-07 23:38:23,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 374 flow [2024-11-07 23:38:23,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 361 flow [2024-11-07 23:38:23,442 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:38:23,453 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;@1e64c7b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:38:23,454 INFO L334 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2024-11-07 23:38:23,459 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:38:23,460 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-07 23:38:23,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:38:23,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:23,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 23:38:23,461 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:23,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1245782, now seen corresponding path program 1 times [2024-11-07 23:38:23,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:23,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647393755] [2024-11-07 23:38:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:23,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:23,750 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 23:38:23,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647393755] [2024-11-07 23:38:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647393755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:23,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:23,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:38:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497218582] [2024-11-07 23:38:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:23,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:23,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:23,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:23,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-11-07 23:38:23,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 176 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 23:38:23,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:23,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-11-07 23:38:23,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:24,649 INFO L124 PetriNetUnfolderBase]: 2273/5775 cut-off events. [2024-11-07 23:38:24,650 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-07 23:38:24,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 5775 events. 2273/5775 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53618 event pairs, 1252 based on Foata normal form. 1/4394 useless extension candidates. Maximal degree in co-relation 8938. Up to 3254 conditions per place. [2024-11-07 23:38:24,697 INFO L140 encePairwiseOnDemand]: 174/180 looper letters, 60 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2024-11-07 23:38:24,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 179 transitions, 495 flow [2024-11-07 23:38:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:38:24,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:38:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 534 transitions. [2024-11-07 23:38:24,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-11-07 23:38:24,717 INFO L175 Difference]: Start difference. First operand has 162 places, 176 transitions, 361 flow. Second operand 4 states and 534 transitions. [2024-11-07 23:38:24,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 179 transitions, 495 flow [2024-11-07 23:38:24,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 179 transitions, 490 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:38:24,734 INFO L231 Difference]: Finished difference. Result has 164 places, 179 transitions, 385 flow [2024-11-07 23:38:24,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=164, PETRI_TRANSITIONS=179} [2024-11-07 23:38:24,739 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 2 predicate places. [2024-11-07 23:38:24,740 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 179 transitions, 385 flow [2024-11-07 23:38:24,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 23:38:24,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:24,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-07 23:38:24,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:38:24,742 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:24,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1540361593, now seen corresponding path program 1 times [2024-11-07 23:38:24,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:24,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536991912] [2024-11-07 23:38:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:38:24,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:24,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536991912] [2024-11-07 23:38:24,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536991912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:38:24,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484657937] [2024-11-07 23:38:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:24,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:38:24,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:38:24,897 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 23:38:24,899 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 23:38:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:24,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:38:24,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:38:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 23:38:25,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 23:38:25,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484657937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:25,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 23:38:25,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-07 23:38:25,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281503564] [2024-11-07 23:38:25,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:25,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 23:38:25,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:25,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 23:38:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-07 23:38:25,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-11-07 23:38:25,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 179 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 23:38:25,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:25,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-11-07 23:38:25,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:25,780 INFO L124 PetriNetUnfolderBase]: 2273/5774 cut-off events. [2024-11-07 23:38:25,781 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-07 23:38:25,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9087 conditions, 5774 events. 2273/5774 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53604 event pairs, 1252 based on Foata normal form. 1/4394 useless extension candidates. Maximal degree in co-relation 9060. Up to 3249 conditions per place. [2024-11-07 23:38:25,820 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 56 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2024-11-07 23:38:25,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 507 flow [2024-11-07 23:38:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 23:38:25,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 23:38:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 766 transitions. [2024-11-07 23:38:25,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7092592592592593 [2024-11-07 23:38:25,824 INFO L175 Difference]: Start difference. First operand has 164 places, 179 transitions, 385 flow. Second operand 6 states and 766 transitions. [2024-11-07 23:38:25,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 507 flow [2024-11-07 23:38:25,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 178 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:38:25,830 INFO L231 Difference]: Finished difference. Result has 167 places, 178 transitions, 392 flow [2024-11-07 23:38:25,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=167, PETRI_TRANSITIONS=178} [2024-11-07 23:38:25,832 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2024-11-07 23:38:25,832 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 178 transitions, 392 flow [2024-11-07 23:38:25,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 23:38:25,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:25,835 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-07 23:38:25,852 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 23:38:26,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:38:26,036 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:26,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash -506567868, now seen corresponding path program 1 times [2024-11-07 23:38:26,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:26,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773729514] [2024-11-07 23:38:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:26,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:26,183 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 23:38:26,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773729514] [2024-11-07 23:38:26,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773729514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:38:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406393411] [2024-11-07 23:38:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:26,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:38:26,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:38:26,187 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 23:38:26,189 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 23:38:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:26,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 23:38:26,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:38:26,294 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 23:38:26,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:38:26,340 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 23:38:26,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406393411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:38:26,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:38:26,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 23:38:26,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763550220] [2024-11-07 23:38:26,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:38:26,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 23:38:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 23:38:26,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 23:38:26,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-11-07 23:38:26,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 178 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states 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 23:38:26,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:26,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-11-07 23:38:26,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:26,966 INFO L124 PetriNetUnfolderBase]: 2276/5786 cut-off events. [2024-11-07 23:38:26,967 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-07 23:38:26,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 5786 events. 2276/5786 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53709 event pairs, 1252 based on Foata normal form. 3/4406 useless extension candidates. Maximal degree in co-relation 9061. Up to 3256 conditions per place. [2024-11-07 23:38:27,008 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 59 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2024-11-07 23:38:27,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 187 transitions, 590 flow [2024-11-07 23:38:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:38:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:38:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1245 transitions. [2024-11-07 23:38:27,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-11-07 23:38:27,013 INFO L175 Difference]: Start difference. First operand has 167 places, 178 transitions, 392 flow. Second operand 10 states and 1245 transitions. [2024-11-07 23:38:27,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 187 transitions, 590 flow [2024-11-07 23:38:27,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 544 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-07 23:38:27,018 INFO L231 Difference]: Finished difference. Result has 174 places, 187 transitions, 444 flow [2024-11-07 23:38:27,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=444, PETRI_PLACES=174, PETRI_TRANSITIONS=187} [2024-11-07 23:38:27,018 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2024-11-07 23:38:27,019 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 187 transitions, 444 flow [2024-11-07 23:38:27,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states 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 23:38:27,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:27,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:27,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 23:38:27,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:38:27,221 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:27,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash -168260666, now seen corresponding path program 1 times [2024-11-07 23:38:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:27,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634104740] [2024-11-07 23:38:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:27,290 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 23:38:27,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:27,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634104740] [2024-11-07 23:38:27,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634104740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:27,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:27,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400306402] [2024-11-07 23:38:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:27,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:27,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2024-11-07 23:38:27,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 187 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 23:38:27,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:27,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2024-11-07 23:38:27,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:28,406 INFO L124 PetriNetUnfolderBase]: 5324/11288 cut-off events. [2024-11-07 23:38:28,406 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-07 23:38:28,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19267 conditions, 11288 events. 5324/11288 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 104859 event pairs, 1055 based on Foata normal form. 416/9336 useless extension candidates. Maximal degree in co-relation 19233. Up to 3742 conditions per place. [2024-11-07 23:38:28,473 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 143 selfloop transitions, 20 changer transitions 0/255 dead transitions. [2024-11-07 23:38:28,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 255 transitions, 910 flow [2024-11-07 23:38:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:38:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:38:28,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2024-11-07 23:38:28,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2024-11-07 23:38:28,477 INFO L175 Difference]: Start difference. First operand has 174 places, 187 transitions, 444 flow. Second operand 4 states and 543 transitions. [2024-11-07 23:38:28,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 255 transitions, 910 flow [2024-11-07 23:38:28,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 255 transitions, 899 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-07 23:38:28,484 INFO L231 Difference]: Finished difference. Result has 174 places, 195 transitions, 569 flow [2024-11-07 23:38:28,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=174, PETRI_TRANSITIONS=195} [2024-11-07 23:38:28,485 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2024-11-07 23:38:28,485 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 195 transitions, 569 flow [2024-11-07 23:38:28,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 23:38:28,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:28,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:28,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:38:28,486 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:28,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash -921111943, now seen corresponding path program 1 times [2024-11-07 23:38:28,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:28,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208201975] [2024-11-07 23:38:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:28,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:28,604 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 23:38:28,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:28,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208201975] [2024-11-07 23:38:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208201975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:28,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425536305] [2024-11-07 23:38:28,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:28,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:28,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2024-11-07 23:38:28,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 195 transitions, 569 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 23:38:28,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:28,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2024-11-07 23:38:28,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:29,369 INFO L124 PetriNetUnfolderBase]: 3212/8400 cut-off events. [2024-11-07 23:38:29,370 INFO L125 PetriNetUnfolderBase]: For 2038/2248 co-relation queries the response was YES. [2024-11-07 23:38:29,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15296 conditions, 8400 events. 3212/8400 cut-off events. For 2038/2248 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 83385 event pairs, 1877 based on Foata normal form. 114/6783 useless extension candidates. Maximal degree in co-relation 15260. Up to 3379 conditions per place. [2024-11-07 23:38:29,425 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 105 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2024-11-07 23:38:29,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 225 transitions, 854 flow [2024-11-07 23:38:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:38:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:38:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2024-11-07 23:38:29,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7902777777777777 [2024-11-07 23:38:29,429 INFO L175 Difference]: Start difference. First operand has 174 places, 195 transitions, 569 flow. Second operand 4 states and 569 transitions. [2024-11-07 23:38:29,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 225 transitions, 854 flow [2024-11-07 23:38:29,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 225 transitions, 854 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:38:29,449 INFO L231 Difference]: Finished difference. Result has 179 places, 196 transitions, 592 flow [2024-11-07 23:38:29,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=179, PETRI_TRANSITIONS=196} [2024-11-07 23:38:29,451 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 17 predicate places. [2024-11-07 23:38:29,451 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 196 transitions, 592 flow [2024-11-07 23:38:29,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 23:38:29,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:29,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:29,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 23:38:29,452 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:29,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:29,452 INFO L85 PathProgramCache]: Analyzing trace with hash -921080133, now seen corresponding path program 1 times [2024-11-07 23:38:29,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:29,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042560039] [2024-11-07 23:38:29,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:29,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:29,534 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 23:38:29,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:29,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042560039] [2024-11-07 23:38:29,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042560039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:29,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:29,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931619034] [2024-11-07 23:38:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:29,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:29,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:29,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-07 23:38:29,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 196 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 23:38:29,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:29,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-07 23:38:29,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:31,458 INFO L124 PetriNetUnfolderBase]: 9582/21426 cut-off events. [2024-11-07 23:38:31,459 INFO L125 PetriNetUnfolderBase]: For 7184/7268 co-relation queries the response was YES. [2024-11-07 23:38:31,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41950 conditions, 21426 events. 9582/21426 cut-off events. For 7184/7268 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 210412 event pairs, 1409 based on Foata normal form. 292/18493 useless extension candidates. Maximal degree in co-relation 41912. Up to 6372 conditions per place. [2024-11-07 23:38:31,611 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 203 selfloop transitions, 32 changer transitions 0/335 dead transitions. [2024-11-07 23:38:31,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 335 transitions, 1457 flow [2024-11-07 23:38:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:38:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:38:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2024-11-07 23:38:31,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7988888888888889 [2024-11-07 23:38:31,789 INFO L175 Difference]: Start difference. First operand has 179 places, 196 transitions, 592 flow. Second operand 5 states and 719 transitions. [2024-11-07 23:38:31,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 335 transitions, 1457 flow [2024-11-07 23:38:31,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 335 transitions, 1454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:38:31,813 INFO L231 Difference]: Finished difference. Result has 186 places, 218 transitions, 859 flow [2024-11-07 23:38:31,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=186, PETRI_TRANSITIONS=218} [2024-11-07 23:38:31,814 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 24 predicate places. [2024-11-07 23:38:31,815 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 218 transitions, 859 flow [2024-11-07 23:38:31,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 23:38:31,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:31,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:31,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:38:31,816 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:31,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:31,816 INFO L85 PathProgramCache]: Analyzing trace with hash -910619801, now seen corresponding path program 1 times [2024-11-07 23:38:31,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:31,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224736199] [2024-11-07 23:38:31,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:31,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:31,888 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 23:38:31,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224736199] [2024-11-07 23:38:31,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224736199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:31,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:31,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:31,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314309952] [2024-11-07 23:38:31,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:31,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:31,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:31,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2024-11-07 23:38:31,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 218 transitions, 859 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 23:38:31,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:31,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2024-11-07 23:38:31,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:34,419 INFO L124 PetriNetUnfolderBase]: 15194/33042 cut-off events. [2024-11-07 23:38:34,419 INFO L125 PetriNetUnfolderBase]: For 31170/32790 co-relation queries the response was YES. [2024-11-07 23:38:34,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72989 conditions, 33042 events. 15194/33042 cut-off events. For 31170/32790 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 340809 event pairs, 4101 based on Foata normal form. 1830/29665 useless extension candidates. Maximal degree in co-relation 72945. Up to 9920 conditions per place. [2024-11-07 23:38:34,629 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 222 selfloop transitions, 20 changer transitions 0/338 dead transitions. [2024-11-07 23:38:34,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 338 transitions, 2069 flow [2024-11-07 23:38:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:38:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:38:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2024-11-07 23:38:34,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7513888888888889 [2024-11-07 23:38:34,631 INFO L175 Difference]: Start difference. First operand has 186 places, 218 transitions, 859 flow. Second operand 4 states and 541 transitions. [2024-11-07 23:38:34,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 338 transitions, 2069 flow [2024-11-07 23:38:34,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 338 transitions, 2045 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-11-07 23:38:34,720 INFO L231 Difference]: Finished difference. Result has 188 places, 226 transitions, 987 flow [2024-11-07 23:38:34,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=188, PETRI_TRANSITIONS=226} [2024-11-07 23:38:34,722 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 26 predicate places. [2024-11-07 23:38:34,722 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 226 transitions, 987 flow [2024-11-07 23:38:34,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 23:38:34,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:34,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:34,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:38:34,723 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:34,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1511256591, now seen corresponding path program 1 times [2024-11-07 23:38:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:34,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623010015] [2024-11-07 23:38:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:34,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:34,791 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 23:38:34,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:34,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623010015] [2024-11-07 23:38:34,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623010015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:34,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:34,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307076167] [2024-11-07 23:38:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:34,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:34,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:34,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-07 23:38:34,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 226 transitions, 987 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 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 23:38:34,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:34,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-07 23:38:34,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:36,744 INFO L124 PetriNetUnfolderBase]: 12097/28436 cut-off events. [2024-11-07 23:38:36,744 INFO L125 PetriNetUnfolderBase]: For 29869/31183 co-relation queries the response was YES. [2024-11-07 23:38:36,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67007 conditions, 28436 events. 12097/28436 cut-off events. For 29869/31183 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 301801 event pairs, 2267 based on Foata normal form. 880/25474 useless extension candidates. Maximal degree in co-relation 66960. Up to 8600 conditions per place. [2024-11-07 23:38:36,943 INFO L140 encePairwiseOnDemand]: 164/180 looper letters, 226 selfloop transitions, 33 changer transitions 0/359 dead transitions. [2024-11-07 23:38:36,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 359 transitions, 2042 flow [2024-11-07 23:38:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:38:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:38:36,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2024-11-07 23:38:36,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811111111111111 [2024-11-07 23:38:36,946 INFO L175 Difference]: Start difference. First operand has 188 places, 226 transitions, 987 flow. Second operand 5 states and 703 transitions. [2024-11-07 23:38:36,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 359 transitions, 2042 flow [2024-11-07 23:38:37,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 359 transitions, 2042 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:38:37,083 INFO L231 Difference]: Finished difference. Result has 192 places, 230 transitions, 1065 flow [2024-11-07 23:38:37,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1065, PETRI_PLACES=192, PETRI_TRANSITIONS=230} [2024-11-07 23:38:37,088 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 30 predicate places. [2024-11-07 23:38:37,088 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 230 transitions, 1065 flow [2024-11-07 23:38:37,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 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 23:38:37,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:37,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:37,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 23:38:37,089 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:37,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1835558730, now seen corresponding path program 1 times [2024-11-07 23:38:37,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:37,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484615278] [2024-11-07 23:38:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:37,176 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 23:38:37,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:37,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484615278] [2024-11-07 23:38:37,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484615278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:37,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:37,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:37,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272468645] [2024-11-07 23:38:37,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:37,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:37,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:37,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:37,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:37,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2024-11-07 23:38:37,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 230 transitions, 1065 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 23:38:37,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:37,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2024-11-07 23:38:37,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:39,187 INFO L124 PetriNetUnfolderBase]: 9581/24590 cut-off events. [2024-11-07 23:38:39,187 INFO L125 PetriNetUnfolderBase]: For 27547/28564 co-relation queries the response was YES. [2024-11-07 23:38:39,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57274 conditions, 24590 events. 9581/24590 cut-off events. For 27547/28564 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 269098 event pairs, 5519 based on Foata normal form. 600/21624 useless extension candidates. Maximal degree in co-relation 57225. Up to 10295 conditions per place. [2024-11-07 23:38:39,512 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 159 selfloop transitions, 4 changer transitions 0/287 dead transitions. [2024-11-07 23:38:39,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 287 transitions, 1755 flow [2024-11-07 23:38:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:38:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:38:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2024-11-07 23:38:39,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-11-07 23:38:39,513 INFO L175 Difference]: Start difference. First operand has 192 places, 230 transitions, 1065 flow. Second operand 4 states and 570 transitions. [2024-11-07 23:38:39,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 287 transitions, 1755 flow [2024-11-07 23:38:39,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 287 transitions, 1755 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:38:39,579 INFO L231 Difference]: Finished difference. Result has 197 places, 231 transitions, 1088 flow [2024-11-07 23:38:39,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1088, PETRI_PLACES=197, PETRI_TRANSITIONS=231} [2024-11-07 23:38:39,580 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 35 predicate places. [2024-11-07 23:38:39,580 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 231 transitions, 1088 flow [2024-11-07 23:38:39,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 23:38:39,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:39,580 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:39,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 23:38:39,581 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:39,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:39,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1835590540, now seen corresponding path program 1 times [2024-11-07 23:38:39,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:39,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272857453] [2024-11-07 23:38:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:39,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:39,635 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 23:38:39,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272857453] [2024-11-07 23:38:39,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272857453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:39,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:39,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:38:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974244366] [2024-11-07 23:38:39,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:39,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:38:39,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:39,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:38:39,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:38:39,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-07 23:38:39,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 231 transitions, 1088 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 23:38:39,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:39,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-07 23:38:39,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:44,140 INFO L124 PetriNetUnfolderBase]: 25043/59161 cut-off events. [2024-11-07 23:38:44,140 INFO L125 PetriNetUnfolderBase]: For 75297/78088 co-relation queries the response was YES. [2024-11-07 23:38:44,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141350 conditions, 59161 events. 25043/59161 cut-off events. For 75297/78088 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 677683 event pairs, 3944 based on Foata normal form. 2224/54096 useless extension candidates. Maximal degree in co-relation 141299. Up to 16392 conditions per place. [2024-11-07 23:38:44,592 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 305 selfloop transitions, 32 changer transitions 0/445 dead transitions. [2024-11-07 23:38:44,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 445 transitions, 3041 flow [2024-11-07 23:38:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:38:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:38:44,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2024-11-07 23:38:44,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2024-11-07 23:38:44,595 INFO L175 Difference]: Start difference. First operand has 197 places, 231 transitions, 1088 flow. Second operand 5 states and 715 transitions. [2024-11-07 23:38:44,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 445 transitions, 3041 flow [2024-11-07 23:38:44,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 445 transitions, 3038 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:38:44,738 INFO L231 Difference]: Finished difference. Result has 204 places, 253 transitions, 1355 flow [2024-11-07 23:38:44,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1355, PETRI_PLACES=204, PETRI_TRANSITIONS=253} [2024-11-07 23:38:44,739 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 42 predicate places. [2024-11-07 23:38:44,739 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 253 transitions, 1355 flow [2024-11-07 23:38:44,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 23:38:44,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:44,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:44,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 23:38:44,740 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:44,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash -395685535, now seen corresponding path program 1 times [2024-11-07 23:38:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:44,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028982192] [2024-11-07 23:38:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:44,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:44,814 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 23:38:44,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:44,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028982192] [2024-11-07 23:38:44,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028982192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:38:44,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:38:44,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 23:38:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230312798] [2024-11-07 23:38:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:38:44,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:38:44,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:38:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:38:44,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-07 23:38:44,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 253 transitions, 1355 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 23:38:44,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:44,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-07 23:38:44,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:38:54,539 INFO L124 PetriNetUnfolderBase]: 51809/110459 cut-off events. [2024-11-07 23:38:54,539 INFO L125 PetriNetUnfolderBase]: For 172070/177923 co-relation queries the response was YES. [2024-11-07 23:38:55,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291099 conditions, 110459 events. 51809/110459 cut-off events. For 172070/177923 co-relation queries the response was YES. Maximal size of possible extension queue 2715. Compared 1276583 event pairs, 14578 based on Foata normal form. 3649/107487 useless extension candidates. Maximal degree in co-relation 291042. Up to 29192 conditions per place. [2024-11-07 23:38:55,805 INFO L140 encePairwiseOnDemand]: 159/180 looper letters, 428 selfloop transitions, 44 changer transitions 0/584 dead transitions. [2024-11-07 23:38:55,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 584 transitions, 4308 flow [2024-11-07 23:38:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 23:38:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 23:38:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 988 transitions. [2024-11-07 23:38:55,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7841269841269841 [2024-11-07 23:38:55,808 INFO L175 Difference]: Start difference. First operand has 204 places, 253 transitions, 1355 flow. Second operand 7 states and 988 transitions. [2024-11-07 23:38:55,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 584 transitions, 4308 flow [2024-11-07 23:38:56,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 584 transitions, 4260 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-11-07 23:38:56,578 INFO L231 Difference]: Finished difference. Result has 214 places, 277 transitions, 1651 flow [2024-11-07 23:38:56,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1651, PETRI_PLACES=214, PETRI_TRANSITIONS=277} [2024-11-07 23:38:56,579 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 52 predicate places. [2024-11-07 23:38:56,579 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 277 transitions, 1651 flow [2024-11-07 23:38:56,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 23:38:56,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:38:56,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:38:56,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 23:38:56,580 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:38:56,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:38:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash 892303592, now seen corresponding path program 1 times [2024-11-07 23:38:56,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:38:56,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765011372] [2024-11-07 23:38:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:56,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:38:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:56,907 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 23:38:56,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:38:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765011372] [2024-11-07 23:38:56,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765011372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 23:38:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10091645] [2024-11-07 23:38:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:38:56,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:38:56,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:38:56,910 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 23:38:56,911 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 23:38:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:38:56,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 23:38:56,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 23:38:57,009 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 23:38:57,072 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 23:38:57,085 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 23:38:57,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 23:38:57,152 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 16 treesize of output 14 [2024-11-07 23:38:57,158 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 22 treesize of output 20 [2024-11-07 23:38:57,172 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 23:38:57,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10091645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 23:38:57,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 23:38:57,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-07 23:38:57,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952236395] [2024-11-07 23:38:57,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 23:38:57,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 23:38:57,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:38:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 23:38:57,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-07 23:38:57,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 180 [2024-11-07 23:38:57,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 277 transitions, 1651 flow. Second operand has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 23:38:57,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:38:57,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 180 [2024-11-07 23:38:57,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:39:06,001 INFO L124 PetriNetUnfolderBase]: 36279/91206 cut-off events. [2024-11-07 23:39:06,001 INFO L125 PetriNetUnfolderBase]: For 184068/189126 co-relation queries the response was YES. [2024-11-07 23:39:06,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247066 conditions, 91206 events. 36279/91206 cut-off events. For 184068/189126 co-relation queries the response was YES. Maximal size of possible extension queue 2391. Compared 1161515 event pairs, 10706 based on Foata normal form. 3045/85825 useless extension candidates. Maximal degree in co-relation 247003. Up to 18623 conditions per place. [2024-11-07 23:39:06,928 INFO L140 encePairwiseOnDemand]: 155/180 looper letters, 404 selfloop transitions, 56 changer transitions 0/588 dead transitions. [2024-11-07 23:39:06,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 588 transitions, 4467 flow [2024-11-07 23:39:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 23:39:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 23:39:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1341 transitions. [2024-11-07 23:39:06,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.745 [2024-11-07 23:39:06,931 INFO L175 Difference]: Start difference. First operand has 214 places, 277 transitions, 1651 flow. Second operand 10 states and 1341 transitions. [2024-11-07 23:39:06,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 588 transitions, 4467 flow [2024-11-07 23:39:09,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 588 transitions, 4467 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:39:09,351 INFO L231 Difference]: Finished difference. Result has 227 places, 289 transitions, 1974 flow [2024-11-07 23:39:09,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1974, PETRI_PLACES=227, PETRI_TRANSITIONS=289} [2024-11-07 23:39:09,351 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 65 predicate places. [2024-11-07 23:39:09,351 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 289 transitions, 1974 flow [2024-11-07 23:39:09,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 23:39:09,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:39:09,352 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:39:09,367 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 23:39:09,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 23:39:09,553 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-07 23:39:09,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:39:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1068701616, now seen corresponding path program 1 times [2024-11-07 23:39:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:39:09,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123863839] [2024-11-07 23:39:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:39:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:39:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:39:09,605 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 23:39:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:39:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123863839] [2024-11-07 23:39:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123863839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:39:09,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:39:09,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:39:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311325689] [2024-11-07 23:39:09,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:39:09,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:39:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:39:09,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:39:09,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:39:09,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-07 23:39:09,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 289 transitions, 1974 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:39:09,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:39:09,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-07 23:39:09,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand