./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-match-subst.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/chl-match-subst.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', '2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa'] 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/chl-match-subst.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 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:36:29,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:36:29,458 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:36:29,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:36:29,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:36:29,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:36:29,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:36:29,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:36:29,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:36:29,484 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:36:29,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:36:29,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:36:29,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:36:29,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:36:29,485 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:36:29,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:36:29,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:36:29,486 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:36:29,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:36:29,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:36:29,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:36:29,486 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:36:29,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:36:29,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:36:29,487 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:36:29,487 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:36:29,487 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:36:29,487 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:36:29,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:36:29,487 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:36:29,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:36:29,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:36:29,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:36:29,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:36:29,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:36:29,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:36:29,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:36:29,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:36:29,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:36:29,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:36:29,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:36:29,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:36:29,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:36:29,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:36:29,489 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 -> 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa [2024-11-07 23:36:29,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:36:29,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:36:29,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:36:29,769 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:36:29,770 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:36:29,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2024-11-07 23:36:31,102 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:36:31,320 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:36:31,321 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2024-11-07 23:36:31,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/32c41e335/24444cad74f34aa1be88e642dc2c6b56/FLAGf453ee056 [2024-11-07 23:36:31,686 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/32c41e335/24444cad74f34aa1be88e642dc2c6b56 [2024-11-07 23:36:31,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:36:31,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:36:31,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:36:31,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:36:31,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:36:31,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:31,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49496f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31, skipping insertion in model container [2024-11-07 23:36:31,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:31,717 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:36:31,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:36:31,894 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:36:31,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:36:31,930 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:36:31,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31 WrapperNode [2024-11-07 23:36:31,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:36:31,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:36:31,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:36:31,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:36:31,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:31,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:31,994 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 13, calls inlined = 23, statements flattened = 285 [2024-11-07 23:36:31,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:36:31,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:36:31,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:36:31,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:36:32,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,006 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,034 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 23:36:32,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:36:32,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:36:32,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:36:32,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:36:32,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (1/1) ... [2024-11-07 23:36:32,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:36:32,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:36:32,124 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 23:36:32,128 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 23:36:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:36:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:36:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:36:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:36:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:36:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 23:36:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 23:36:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:36:32,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:36:32,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:36:32,157 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 23:36:32,287 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:36:32,290 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:36:32,812 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:36:32,812 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:36:33,116 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:36:33,118 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-07 23:36:33,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:36:33 BoogieIcfgContainer [2024-11-07 23:36:33,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:36:33,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:36:33,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:36:33,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:36:33,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:36:31" (1/3) ... [2024-11-07 23:36:33,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451b86cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:36:33, skipping insertion in model container [2024-11-07 23:36:33,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:31" (2/3) ... [2024-11-07 23:36:33,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451b86cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:36:33, skipping insertion in model container [2024-11-07 23:36:33,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:36:33" (3/3) ... [2024-11-07 23:36:33,129 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2024-11-07 23:36:33,144 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:36:33,145 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-11-07 23:36:33,145 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:36:33,262 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 23:36:33,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 271 flow [2024-11-07 23:36:33,362 INFO L124 PetriNetUnfolderBase]: 12/122 cut-off events. [2024-11-07 23:36:33,366 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 23:36:33,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 12/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 491 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2024-11-07 23:36:33,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 125 transitions, 271 flow [2024-11-07 23:36:33,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 120 transitions, 255 flow [2024-11-07 23:36:33,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:36:33,407 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;@52a0aea0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:36:33,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-07 23:36:33,414 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:36:33,414 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-07 23:36:33,414 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:36:33,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:33,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 23:36:33,417 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-07 23:36:33,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:33,422 INFO L85 PathProgramCache]: Analyzing trace with hash 838780535, now seen corresponding path program 1 times [2024-11-07 23:36:33,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:33,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311693652] [2024-11-07 23:36:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:33,661 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 23:36:33,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311693652] [2024-11-07 23:36:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311693652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:33,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:33,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:36:33,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357638485] [2024-11-07 23:36:33,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:33,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:36:33,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:33,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:36:33,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:36:33,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-11-07 23:36:33,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 23:36:33,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:33,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-11-07 23:36:33,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:37,750 INFO L124 PetriNetUnfolderBase]: 23015/40632 cut-off events. [2024-11-07 23:36:37,750 INFO L125 PetriNetUnfolderBase]: For 608/608 co-relation queries the response was YES. [2024-11-07 23:36:37,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71837 conditions, 40632 events. 23015/40632 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 1562. Compared 371473 event pairs, 5638 based on Foata normal form. 1256/36536 useless extension candidates. Maximal degree in co-relation 70698. Up to 15184 conditions per place. [2024-11-07 23:36:38,145 INFO L140 encePairwiseOnDemand]: 110/125 looper letters, 104 selfloop transitions, 10 changer transitions 0/180 dead transitions. [2024-11-07 23:36:38,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 180 transitions, 615 flow [2024-11-07 23:36:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:36:38,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:36:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2024-11-07 23:36:38,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.792 [2024-11-07 23:36:38,170 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 255 flow. Second operand 4 states and 396 transitions. [2024-11-07 23:36:38,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 180 transitions, 615 flow [2024-11-07 23:36:38,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 180 transitions, 600 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 23:36:38,192 INFO L231 Difference]: Finished difference. Result has 117 places, 124 transitions, 312 flow [2024-11-07 23:36:38,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=117, PETRI_TRANSITIONS=124} [2024-11-07 23:36:38,199 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-11-07 23:36:38,201 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 124 transitions, 312 flow [2024-11-07 23:36:38,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 23:36:38,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:38,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 23:36:38,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:36:38,202 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-07 23:36:38,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:38,202 INFO L85 PathProgramCache]: Analyzing trace with hash 232393793, now seen corresponding path program 1 times [2024-11-07 23:36:38,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:38,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53243151] [2024-11-07 23:36:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:38,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:38,309 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 23:36:38,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:38,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53243151] [2024-11-07 23:36:38,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53243151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:38,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:38,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:36:38,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123351559] [2024-11-07 23:36:38,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:38,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:36:38,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:38,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:36:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:36:38,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 125 [2024-11-07 23:36:38,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 124 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 23:36:38,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:38,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 125 [2024-11-07 23:36:38,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:40,986 INFO L124 PetriNetUnfolderBase]: 16132/32508 cut-off events. [2024-11-07 23:36:40,986 INFO L125 PetriNetUnfolderBase]: For 6540/6983 co-relation queries the response was YES. [2024-11-07 23:36:41,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59590 conditions, 32508 events. 16132/32508 cut-off events. For 6540/6983 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 326542 event pairs, 7199 based on Foata normal form. 443/28360 useless extension candidates. Maximal degree in co-relation 40083. Up to 11150 conditions per place. [2024-11-07 23:36:41,297 INFO L140 encePairwiseOnDemand]: 118/125 looper letters, 71 selfloop transitions, 7 changer transitions 0/152 dead transitions. [2024-11-07 23:36:41,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 152 transitions, 529 flow [2024-11-07 23:36:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:36:41,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:36:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2024-11-07 23:36:41,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-07 23:36:41,300 INFO L175 Difference]: Start difference. First operand has 117 places, 124 transitions, 312 flow. Second operand 4 states and 375 transitions. [2024-11-07 23:36:41,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 152 transitions, 529 flow [2024-11-07 23:36:41,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 152 transitions, 529 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:36:41,321 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 336 flow [2024-11-07 23:36:41,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2024-11-07 23:36:41,323 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2024-11-07 23:36:41,324 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 336 flow [2024-11-07 23:36:41,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 23:36:41,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:41,324 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:36:41,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 23:36:41,324 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-07 23:36:41,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:41,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1385757797, now seen corresponding path program 1 times [2024-11-07 23:36:41,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:41,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142294052] [2024-11-07 23:36:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:41,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:41,439 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 23:36:41,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:41,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142294052] [2024-11-07 23:36:41,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142294052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:41,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:41,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:36:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077606702] [2024-11-07 23:36:41,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:41,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:36:41,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:41,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:36:41,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:36:41,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 125 [2024-11-07 23:36:41,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 23:36:41,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:41,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 125 [2024-11-07 23:36:41,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:43,584 INFO L124 PetriNetUnfolderBase]: 17340/34056 cut-off events. [2024-11-07 23:36:43,584 INFO L125 PetriNetUnfolderBase]: For 15002/15445 co-relation queries the response was YES. [2024-11-07 23:36:43,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66158 conditions, 34056 events. 17340/34056 cut-off events. For 15002/15445 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 337306 event pairs, 8097 based on Foata normal form. 681/29866 useless extension candidates. Maximal degree in co-relation 45075. Up to 12342 conditions per place. [2024-11-07 23:36:43,831 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 73 selfloop transitions, 7 changer transitions 0/150 dead transitions. [2024-11-07 23:36:43,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 150 transitions, 549 flow [2024-11-07 23:36:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:36:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:36:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-11-07 23:36:43,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.732 [2024-11-07 23:36:43,833 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 336 flow. Second operand 4 states and 366 transitions. [2024-11-07 23:36:43,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 150 transitions, 549 flow [2024-11-07 23:36:43,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 150 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:36:43,865 INFO L231 Difference]: Finished difference. Result has 120 places, 123 transitions, 338 flow [2024-11-07 23:36:43,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=120, PETRI_TRANSITIONS=123} [2024-11-07 23:36:43,867 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2024-11-07 23:36:43,867 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 123 transitions, 338 flow [2024-11-07 23:36:43,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 23:36:43,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:43,868 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:36:43,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 23:36:43,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-07 23:36:43,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:43,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1449834333, now seen corresponding path program 1 times [2024-11-07 23:36:43,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:43,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345242045] [2024-11-07 23:36:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:43,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:43,951 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 23:36:43,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:43,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345242045] [2024-11-07 23:36:43,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345242045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:43,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:43,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:36:43,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980450132] [2024-11-07 23:36:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:43,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:36:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:36:43,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:36:44,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-11-07 23:36:44,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 123 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 23:36:44,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:44,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-11-07 23:36:44,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:47,552 INFO L124 PetriNetUnfolderBase]: 32976/59804 cut-off events. [2024-11-07 23:36:47,552 INFO L125 PetriNetUnfolderBase]: For 32156/33933 co-relation queries the response was YES. [2024-11-07 23:36:47,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121862 conditions, 59804 events. 32976/59804 cut-off events. For 32156/33933 co-relation queries the response was YES. Maximal size of possible extension queue 2229. Compared 596568 event pairs, 7734 based on Foata normal form. 3002/54259 useless extension candidates. Maximal degree in co-relation 62630. Up to 21704 conditions per place. [2024-11-07 23:36:47,983 INFO L140 encePairwiseOnDemand]: 110/125 looper letters, 117 selfloop transitions, 10 changer transitions 0/191 dead transitions. [2024-11-07 23:36:47,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 191 transitions, 842 flow [2024-11-07 23:36:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:36:47,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:36:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2024-11-07 23:36:47,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.788 [2024-11-07 23:36:47,985 INFO L175 Difference]: Start difference. First operand has 120 places, 123 transitions, 338 flow. Second operand 4 states and 394 transitions. [2024-11-07 23:36:47,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 191 transitions, 842 flow [2024-11-07 23:36:48,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 191 transitions, 816 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 23:36:48,127 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 390 flow [2024-11-07 23:36:48,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2024-11-07 23:36:48,128 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 3 predicate places. [2024-11-07 23:36:48,128 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 390 flow [2024-11-07 23:36:48,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 23:36:48,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:48,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:36:48,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:36:48,129 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-07 23:36:48,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1995190342, now seen corresponding path program 1 times [2024-11-07 23:36:48,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:48,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105732677] [2024-11-07 23:36:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:48,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:48,337 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 23:36:48,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:48,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105732677] [2024-11-07 23:36:48,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105732677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:48,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:48,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:36:48,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361034043] [2024-11-07 23:36:48,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:48,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:36:48,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:48,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:36:48,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:36:48,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 125 [2024-11-07 23:36:48,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 23:36:48,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:48,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 125 [2024-11-07 23:36:48,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:51,785 INFO L124 PetriNetUnfolderBase]: 24595/49066 cut-off events. [2024-11-07 23:36:51,785 INFO L125 PetriNetUnfolderBase]: For 29070/30832 co-relation queries the response was YES. [2024-11-07 23:36:51,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103906 conditions, 49066 events. 24595/49066 cut-off events. For 29070/30832 co-relation queries the response was YES. Maximal size of possible extension queue 1899. Compared 518961 event pairs, 7899 based on Foata normal form. 1319/44352 useless extension candidates. Maximal degree in co-relation 38246. Up to 18020 conditions per place. [2024-11-07 23:36:52,159 INFO L140 encePairwiseOnDemand]: 118/125 looper letters, 80 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-11-07 23:36:52,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 159 transitions, 681 flow [2024-11-07 23:36:52,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:36:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:36:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2024-11-07 23:36:52,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.748 [2024-11-07 23:36:52,161 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 390 flow. Second operand 4 states and 374 transitions. [2024-11-07 23:36:52,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 159 transitions, 681 flow [2024-11-07 23:36:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 159 transitions, 681 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:36:52,481 INFO L231 Difference]: Finished difference. Result has 124 places, 127 transitions, 414 flow [2024-11-07 23:36:52,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=414, PETRI_PLACES=124, PETRI_TRANSITIONS=127} [2024-11-07 23:36:52,482 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-11-07 23:36:52,482 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 127 transitions, 414 flow [2024-11-07 23:36:52,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 23:36:52,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:52,482 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:36:52,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 23:36:52,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-07 23:36:52,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash -8817756, now seen corresponding path program 1 times [2024-11-07 23:36:52,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:52,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542615418] [2024-11-07 23:36:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:52,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:52,553 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 23:36:52,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:52,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542615418] [2024-11-07 23:36:52,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542615418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:52,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:52,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:36:52,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173642055] [2024-11-07 23:36:52,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:52,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:36:52,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:52,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:36:52,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:36:52,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-11-07 23:36:52,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 23:36:52,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:52,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-11-07 23:36:52,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:56,539 INFO L124 PetriNetUnfolderBase]: 30396/60261 cut-off events. [2024-11-07 23:36:56,539 INFO L125 PetriNetUnfolderBase]: For 49432/51401 co-relation queries the response was YES. [2024-11-07 23:36:56,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132037 conditions, 60261 events. 30396/60261 cut-off events. For 49432/51401 co-relation queries the response was YES. Maximal size of possible extension queue 2266. Compared 650416 event pairs, 10515 based on Foata normal form. 1925/54317 useless extension candidates. Maximal degree in co-relation 98557. Up to 16700 conditions per place. [2024-11-07 23:36:57,116 INFO L140 encePairwiseOnDemand]: 116/125 looper letters, 117 selfloop transitions, 9 changer transitions 0/191 dead transitions. [2024-11-07 23:36:57,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 191 transitions, 898 flow [2024-11-07 23:36:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:36:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:36:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-11-07 23:36:57,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.776 [2024-11-07 23:36:57,118 INFO L175 Difference]: Start difference. First operand has 124 places, 127 transitions, 414 flow. Second operand 4 states and 388 transitions. [2024-11-07 23:36:57,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 191 transitions, 898 flow [2024-11-07 23:36:57,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 191 transitions, 880 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:36:57,373 INFO L231 Difference]: Finished difference. Result has 125 places, 125 transitions, 412 flow [2024-11-07 23:36:57,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=125, PETRI_TRANSITIONS=125} [2024-11-07 23:36:57,373 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 7 predicate places. [2024-11-07 23:36:57,374 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 125 transitions, 412 flow [2024-11-07 23:36:57,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 23:36:57,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:57,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:36:57,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:36:57,374 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-07 23:36:57,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash -8818781, now seen corresponding path program 1 times [2024-11-07 23:36:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:57,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377924701] [2024-11-07 23:36:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:57,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:57,485 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 23:36:57,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:57,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377924701] [2024-11-07 23:36:57,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377924701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:57,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:36:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229347506] [2024-11-07 23:36:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:57,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 23:36:57,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 23:36:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 23:36:57,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 125 [2024-11-07 23:36:57,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 125 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:36:57,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:57,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 125 [2024-11-07 23:36:57,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:02,266 INFO L124 PetriNetUnfolderBase]: 40958/68441 cut-off events. [2024-11-07 23:37:02,266 INFO L125 PetriNetUnfolderBase]: For 51988/55089 co-relation queries the response was YES. [2024-11-07 23:37:02,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161212 conditions, 68441 events. 40958/68441 cut-off events. For 51988/55089 co-relation queries the response was YES. Maximal size of possible extension queue 2384. Compared 628671 event pairs, 10850 based on Foata normal form. 1535/64482 useless extension candidates. Maximal degree in co-relation 110000. Up to 29388 conditions per place. [2024-11-07 23:37:02,777 INFO L140 encePairwiseOnDemand]: 114/125 looper letters, 115 selfloop transitions, 12 changer transitions 0/190 dead transitions. [2024-11-07 23:37:02,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 190 transitions, 898 flow [2024-11-07 23:37:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 23:37:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 23:37:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2024-11-07 23:37:02,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7456 [2024-11-07 23:37:02,779 INFO L175 Difference]: Start difference. First operand has 125 places, 125 transitions, 412 flow. Second operand 5 states and 466 transitions. [2024-11-07 23:37:02,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 190 transitions, 898 flow [2024-11-07 23:37:02,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 891 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:02,986 INFO L231 Difference]: Finished difference. Result has 129 places, 125 transitions, 451 flow [2024-11-07 23:37:02,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=129, PETRI_TRANSITIONS=125} [2024-11-07 23:37:02,987 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 11 predicate places. [2024-11-07 23:37:02,988 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 125 transitions, 451 flow [2024-11-07 23:37:02,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:37:02,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:02,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:02,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:37:02,988 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-07 23:37:02,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1721389209, now seen corresponding path program 1 times [2024-11-07 23:37:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:02,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975288150] [2024-11-07 23:37:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:03,042 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 23:37:03,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:03,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975288150] [2024-11-07 23:37:03,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975288150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:03,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:03,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 23:37:03,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930930734] [2024-11-07 23:37:03,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:03,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:03,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:03,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:03,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:03,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 125 [2024-11-07 23:37:03,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 125 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:37:03,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:03,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 125 [2024-11-07 23:37:03,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:06,707 INFO L124 PetriNetUnfolderBase]: 26060/50461 cut-off events. [2024-11-07 23:37:06,707 INFO L125 PetriNetUnfolderBase]: For 79124/81218 co-relation queries the response was YES. [2024-11-07 23:37:06,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120902 conditions, 50461 events. 26060/50461 cut-off events. For 79124/81218 co-relation queries the response was YES. Maximal size of possible extension queue 1951. Compared 521487 event pairs, 9549 based on Foata normal form. 1809/46198 useless extension candidates. Maximal degree in co-relation 42988. Up to 17334 conditions per place. [2024-11-07 23:37:07,065 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 82 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2024-11-07 23:37:07,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 155 transitions, 776 flow [2024-11-07 23:37:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 23:37:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 23:37:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2024-11-07 23:37:07,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-11-07 23:37:07,067 INFO L175 Difference]: Start difference. First operand has 129 places, 125 transitions, 451 flow. Second operand 4 states and 365 transitions. [2024-11-07 23:37:07,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 155 transitions, 776 flow [2024-11-07 23:37:07,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 155 transitions, 759 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 23:37:07,422 INFO L231 Difference]: Finished difference. Result has 129 places, 124 transitions, 451 flow [2024-11-07 23:37:07,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=451, PETRI_PLACES=129, PETRI_TRANSITIONS=124} [2024-11-07 23:37:07,423 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 11 predicate places. [2024-11-07 23:37:07,423 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 124 transitions, 451 flow [2024-11-07 23:37:07,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 23:37:07,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:07,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 23:37:07,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 23:37:07,424 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-07 23:37:07,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1777273220, now seen corresponding path program 1 times [2024-11-07 23:37:07,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:07,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786236995] [2024-11-07 23:37:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:07,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:07,474 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 23:37:07,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:07,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786236995] [2024-11-07 23:37:07,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786236995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:07,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:07,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 23:37:07,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774605012] [2024-11-07 23:37:07,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:07,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 23:37:07,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:07,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 23:37:07,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 23:37:07,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-11-07 23:37:07,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 23:37:07,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:07,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-11-07 23:37:07,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand