./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-collitem-trans.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-collitem-trans.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', '3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab'] 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-collitem-trans.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 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 23:35:58,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 23:35:58,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 23:35:58,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 23:35:58,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 23:35:58,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 23:35:58,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 23:35:58,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 23:35:58,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 23:35:58,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 23:35:58,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 23:35:58,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 23:35:58,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 23:35:58,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 23:35:58,984 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 23:35:58,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 23:35:58,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 23:35:58,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 23:35:58,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 23:35:58,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 23:35:58,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 23:35:58,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 23:35:58,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 23:35:58,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:35:58,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 23:35:58,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 23:35:58,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 23:35:58,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 23:35:58,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 23:35:58,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 23:35:58,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 23:35:58,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 23:35:58,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 23:35:58,988 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 -> 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab [2024-11-07 23:35:59,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 23:35:59,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 23:35:59,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 23:35:59,215 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 23:35:59,215 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 23:35:59,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c [2024-11-07 23:36:00,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 23:36:00,563 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 23:36:00,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c [2024-11-07 23:36:00,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c35572f71/d9b225f0e15748478cc3f967f6aef3c5/FLAG6564d46ad [2024-11-07 23:36:00,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c35572f71/d9b225f0e15748478cc3f967f6aef3c5 [2024-11-07 23:36:00,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 23:36:00,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 23:36:00,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 23:36:00,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 23:36:00,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 23:36:00,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:36:00" (1/1) ... [2024-11-07 23:36:00,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777674ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:00, skipping insertion in model container [2024-11-07 23:36:00,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:36:00" (1/1) ... [2024-11-07 23:36:00,967 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 23:36:01,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:36:01,094 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 23:36:01,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 23:36:01,119 INFO L204 MainTranslator]: Completed translation [2024-11-07 23:36:01,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01 WrapperNode [2024-11-07 23:36:01,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 23:36:01,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 23:36:01,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 23:36:01,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 23:36:01,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,150 INFO L138 Inliner]: procedures = 22, calls = 31, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 515 [2024-11-07 23:36:01,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 23:36:01,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 23:36:01,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 23:36:01,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 23:36:01,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,159 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,169 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 23:36:01,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 23:36:01,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 23:36:01,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 23:36:01,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 23:36:01,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (1/1) ... [2024-11-07 23:36:01,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 23:36:01,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 23:36:01,223 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 23:36:01,232 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 23:36:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 23:36:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 23:36:01,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 23:36:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 23:36:01,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 23:36:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 23:36:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 23:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 23:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 23:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 23:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 23:36:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 23:36:01,256 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 23:36:01,353 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 23:36:01,355 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 23:36:02,105 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 23:36:02,105 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 23:36:03,975 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 23:36:03,975 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-07 23:36:03,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:36:03 BoogieIcfgContainer [2024-11-07 23:36:03,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 23:36:03,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 23:36:03,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 23:36:03,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 23:36:03,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:36:00" (1/3) ... [2024-11-07 23:36:03,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce730b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:36:03, skipping insertion in model container [2024-11-07 23:36:03,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:36:01" (2/3) ... [2024-11-07 23:36:03,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce730b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:36:03, skipping insertion in model container [2024-11-07 23:36:03,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:36:03" (3/3) ... [2024-11-07 23:36:03,983 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2024-11-07 23:36:03,994 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 23:36:03,995 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-07 23:36:03,995 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 23:36:04,674 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 23:36:04,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 95 transitions, 211 flow [2024-11-07 23:36:04,800 INFO L124 PetriNetUnfolderBase]: 0/92 cut-off events. [2024-11-07 23:36:04,802 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 23:36:04,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 92 events. 0/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 507 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-07 23:36:04,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 95 transitions, 211 flow [2024-11-07 23:36:04,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 90 transitions, 195 flow [2024-11-07 23:36:04,812 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 23:36:04,820 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;@7873b31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 23:36:04,820 INFO L334 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2024-11-07 23:36:04,824 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 23:36:04,824 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-07 23:36:04,824 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 23:36:04,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:04,825 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:36:04,825 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:36:04,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash 70026874, now seen corresponding path program 1 times [2024-11-07 23:36:04,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:04,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042960435] [2024-11-07 23:36:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:05,063 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 23:36:05,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:05,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042960435] [2024-11-07 23:36:05,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042960435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:05,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:05,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:36:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407503623] [2024-11-07 23:36:05,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:05,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 23:36:05,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:05,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 23:36:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 23:36:05,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:36:05,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 195 flow. Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 23:36:05,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:05,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:36:05,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:19,913 INFO L124 PetriNetUnfolderBase]: 34236/49456 cut-off events. [2024-11-07 23:36:19,913 INFO L125 PetriNetUnfolderBase]: For 492/492 co-relation queries the response was YES. [2024-11-07 23:36:19,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99698 conditions, 49456 events. 34236/49456 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 11172. Compared 430417 event pairs, 34236 based on Foata normal form. 0/12567 useless extension candidates. Maximal degree in co-relation 97143. Up to 49096 conditions per place. [2024-11-07 23:36:20,194 INFO L140 encePairwiseOnDemand]: 71/95 looper letters, 63 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2024-11-07 23:36:20,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 273 flow [2024-11-07 23:36:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 23:36:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 23:36:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 99 transitions. [2024-11-07 23:36:20,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2024-11-07 23:36:20,206 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 195 flow. Second operand 2 states and 99 transitions. [2024-11-07 23:36:20,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 273 flow [2024-11-07 23:36:20,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 264 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 23:36:20,550 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 138 flow [2024-11-07 23:36:20,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=138, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-11-07 23:36:20,555 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -28 predicate places. [2024-11-07 23:36:20,556 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 138 flow [2024-11-07 23:36:20,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 23:36:20,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:20,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:36:20,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 23:36:20,557 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:36:20,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash 70026875, now seen corresponding path program 1 times [2024-11-07 23:36:20,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:20,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314834785] [2024-11-07 23:36:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:20,635 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 23:36:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314834785] [2024-11-07 23:36:20,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314834785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:20,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:20,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:36:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800550971] [2024-11-07 23:36:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:20,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:36:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:20,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:36:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:36:20,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:36:20,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:36:20,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:20,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:36:20,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:32,453 INFO L124 PetriNetUnfolderBase]: 30688/44370 cut-off events. [2024-11-07 23:36:32,453 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-07 23:36:32,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89086 conditions, 44370 events. 30688/44370 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 9960. Compared 382151 event pairs, 30688 based on Foata normal form. 0/11459 useless extension candidates. Maximal degree in co-relation 89083. Up to 44046 conditions per place. [2024-11-07 23:36:32,627 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 60 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2024-11-07 23:36:32,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 256 flow [2024-11-07 23:36:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:36:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:36:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-07 23:36:32,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28421052631578947 [2024-11-07 23:36:32,630 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 138 flow. Second operand 3 states and 81 transitions. [2024-11-07 23:36:32,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 256 flow [2024-11-07 23:36:32,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 23:36:32,632 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 136 flow [2024-11-07 23:36:32,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-11-07 23:36:32,633 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -28 predicate places. [2024-11-07 23:36:32,633 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 136 flow [2024-11-07 23:36:32,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:36:32,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:32,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:36:32,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 23:36:32,634 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:36:32,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 70026876, now seen corresponding path program 1 times [2024-11-07 23:36:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:32,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732947890] [2024-11-07 23:36:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:32,702 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 23:36:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732947890] [2024-11-07 23:36:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732947890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:32,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:32,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:36:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832966207] [2024-11-07 23:36:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:32,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:36:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:36:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:36:32,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:36:32,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:36:32,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:32,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:36:32,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:42,358 INFO L124 PetriNetUnfolderBase]: 27334/39560 cut-off events. [2024-11-07 23:36:42,358 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-07 23:36:42,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79432 conditions, 39560 events. 27334/39560 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 8818. Compared 336678 event pairs, 27334 based on Foata normal form. 0/10401 useless extension candidates. Maximal degree in co-relation 79428. Up to 39271 conditions per place. [2024-11-07 23:36:42,490 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 58 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2024-11-07 23:36:42,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 62 transitions, 250 flow [2024-11-07 23:36:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:36:42,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:36:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-07 23:36:42,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2771929824561403 [2024-11-07 23:36:42,492 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 136 flow. Second operand 3 states and 79 transitions. [2024-11-07 23:36:42,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 62 transitions, 250 flow [2024-11-07 23:36:42,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 62 transitions, 249 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:36:42,493 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 133 flow [2024-11-07 23:36:42,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-11-07 23:36:42,493 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -29 predicate places. [2024-11-07 23:36:42,493 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 133 flow [2024-11-07 23:36:42,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:36:42,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:42,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:36:42,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 23:36:42,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:36:42,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash 70026878, now seen corresponding path program 1 times [2024-11-07 23:36:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:42,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124508184] [2024-11-07 23:36:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:42,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:42,639 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 23:36:42,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:42,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124508184] [2024-11-07 23:36:42,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124508184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:42,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:42,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:36:42,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653699136] [2024-11-07 23:36:42,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:42,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:36:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:36:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:36:42,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:36:42,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:36:42,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:42,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:36:42,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:51,361 INFO L124 PetriNetUnfolderBase]: 24395/35360 cut-off events. [2024-11-07 23:36:51,362 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-07 23:36:51,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71015 conditions, 35360 events. 24395/35360 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 7805. Compared 297878 event pairs, 24395 based on Foata normal form. 0/9470 useless extension candidates. Maximal degree in co-relation 71011. Up to 35088 conditions per place. [2024-11-07 23:36:51,490 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 56 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2024-11-07 23:36:51,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 243 flow [2024-11-07 23:36:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:36:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:36:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-07 23:36:51,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27017543859649124 [2024-11-07 23:36:51,492 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 133 flow. Second operand 3 states and 77 transitions. [2024-11-07 23:36:51,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 243 flow [2024-11-07 23:36:51,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:36:51,493 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 130 flow [2024-11-07 23:36:51,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-07 23:36:51,493 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -30 predicate places. [2024-11-07 23:36:51,493 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 130 flow [2024-11-07 23:36:51,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:36:51,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:51,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:36:51,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 23:36:51,494 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:36:51,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash 70026879, now seen corresponding path program 1 times [2024-11-07 23:36:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:51,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622865968] [2024-11-07 23:36:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:51,551 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 23:36:51,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:51,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622865968] [2024-11-07 23:36:51,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622865968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:51,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:51,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:36:51,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088731519] [2024-11-07 23:36:51,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:51,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:36:51,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:36:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:36:51,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:36:51,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:36:51,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:51,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:36:51,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:36:59,381 INFO L124 PetriNetUnfolderBase]: 21622/31394 cut-off events. [2024-11-07 23:36:59,382 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-07 23:36:59,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63066 conditions, 31394 events. 21622/31394 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 6854. Compared 261631 event pairs, 21622 based on Foata normal form. 0/8581 useless extension candidates. Maximal degree in co-relation 63062. Up to 31139 conditions per place. [2024-11-07 23:36:59,492 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 54 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2024-11-07 23:36:59,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 236 flow [2024-11-07 23:36:59,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:36:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:36:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-07 23:36:59,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2631578947368421 [2024-11-07 23:36:59,495 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 130 flow. Second operand 3 states and 75 transitions. [2024-11-07 23:36:59,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 236 flow [2024-11-07 23:36:59,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:36:59,496 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 127 flow [2024-11-07 23:36:59,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-11-07 23:36:59,497 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -31 predicate places. [2024-11-07 23:36:59,497 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 127 flow [2024-11-07 23:36:59,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:36:59,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:36:59,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:36:59,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 23:36:59,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:36:59,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:36:59,497 INFO L85 PathProgramCache]: Analyzing trace with hash 70026881, now seen corresponding path program 1 times [2024-11-07 23:36:59,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:36:59,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907373168] [2024-11-07 23:36:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:36:59,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:36:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:36:59,539 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 23:36:59,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:36:59,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907373168] [2024-11-07 23:36:59,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907373168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:36:59,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:36:59,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:36:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268330430] [2024-11-07 23:36:59,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:36:59,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:36:59,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:36:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:36:59,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:36:59,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:36:59,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:36:59,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:36:59,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:36:59,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:06,754 INFO L124 PetriNetUnfolderBase]: 18962/27568 cut-off events. [2024-11-07 23:37:06,754 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-07 23:37:06,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55383 conditions, 27568 events. 18962/27568 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 5966. Compared 227474 event pairs, 18962 based on Foata normal form. 0/7703 useless extension candidates. Maximal degree in co-relation 55379. Up to 27344 conditions per place. [2024-11-07 23:37:06,843 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 52 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2024-11-07 23:37:06,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 229 flow [2024-11-07 23:37:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-07 23:37:06,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.256140350877193 [2024-11-07 23:37:06,852 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 127 flow. Second operand 3 states and 73 transitions. [2024-11-07 23:37:06,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 229 flow [2024-11-07 23:37:06,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 56 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:06,853 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 124 flow [2024-11-07 23:37:06,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-11-07 23:37:06,854 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -32 predicate places. [2024-11-07 23:37:06,854 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 124 flow [2024-11-07 23:37:06,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:06,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:06,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:37:06,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 23:37:06,854 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:37:06,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash 70026882, now seen corresponding path program 1 times [2024-11-07 23:37:06,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:06,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783306125] [2024-11-07 23:37:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:06,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:06,945 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 23:37:06,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:06,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783306125] [2024-11-07 23:37:06,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783306125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:06,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:06,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:37:06,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427903119] [2024-11-07 23:37:06,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:06,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:06,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:06,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:06,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:06,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:37:06,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:06,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:06,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:37:06,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:13,197 INFO L124 PetriNetUnfolderBase]: 16476/23990 cut-off events. [2024-11-07 23:37:13,198 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-07 23:37:13,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48198 conditions, 23990 events. 16476/23990 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 5140. Compared 196782 event pairs, 16476 based on Foata normal form. 0/6871 useless extension candidates. Maximal degree in co-relation 48194. Up to 23795 conditions per place. [2024-11-07 23:37:13,267 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 50 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2024-11-07 23:37:13,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 222 flow [2024-11-07 23:37:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-07 23:37:13,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24912280701754386 [2024-11-07 23:37:13,269 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 124 flow. Second operand 3 states and 71 transitions. [2024-11-07 23:37:13,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 222 flow [2024-11-07 23:37:13,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 54 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:13,271 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 121 flow [2024-11-07 23:37:13,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-11-07 23:37:13,272 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -33 predicate places. [2024-11-07 23:37:13,272 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 121 flow [2024-11-07 23:37:13,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:13,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:13,273 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:37:13,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 23:37:13,273 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:37:13,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:13,275 INFO L85 PathProgramCache]: Analyzing trace with hash 70026884, now seen corresponding path program 1 times [2024-11-07 23:37:13,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:13,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649801166] [2024-11-07 23:37:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:13,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:13,326 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 23:37:13,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649801166] [2024-11-07 23:37:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649801166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:13,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:13,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:37:13,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51700859] [2024-11-07 23:37:13,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:13,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:13,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:13,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:37:13,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:13,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:13,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:37:13,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:18,954 INFO L124 PetriNetUnfolderBase]: 14329/20910 cut-off events. [2024-11-07 23:37:18,954 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-07 23:37:18,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42023 conditions, 20910 events. 14329/20910 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4419. Compared 169372 event pairs, 14329 based on Foata normal form. 0/6146 useless extension candidates. Maximal degree in co-relation 42019. Up to 20730 conditions per place. [2024-11-07 23:37:19,026 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 48 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2024-11-07 23:37:19,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 52 transitions, 215 flow [2024-11-07 23:37:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-07 23:37:19,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24210526315789474 [2024-11-07 23:37:19,028 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 121 flow. Second operand 3 states and 69 transitions. [2024-11-07 23:37:19,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 52 transitions, 215 flow [2024-11-07 23:37:19,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:19,029 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 118 flow [2024-11-07 23:37:19,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-07 23:37:19,029 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -34 predicate places. [2024-11-07 23:37:19,029 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 118 flow [2024-11-07 23:37:19,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:19,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:19,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:37:19,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 23:37:19,030 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:37:19,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash 70026885, now seen corresponding path program 1 times [2024-11-07 23:37:19,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:19,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348844160] [2024-11-07 23:37:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:19,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:19,093 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 23:37:19,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:19,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348844160] [2024-11-07 23:37:19,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348844160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:19,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:19,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:37:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623757608] [2024-11-07 23:37:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:19,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:19,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:19,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:19,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:19,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:37:19,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:19,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:19,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:37:19,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:24,093 INFO L124 PetriNetUnfolderBase]: 12328/18036 cut-off events. [2024-11-07 23:37:24,094 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-07 23:37:24,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36260 conditions, 18036 events. 12328/18036 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 3752. Compared 143757 event pairs, 12328 based on Foata normal form. 0/5459 useless extension candidates. Maximal degree in co-relation 36256. Up to 17871 conditions per place. [2024-11-07 23:37:24,153 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 46 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-07 23:37:24,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 50 transitions, 208 flow [2024-11-07 23:37:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-07 23:37:24,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23508771929824562 [2024-11-07 23:37:24,155 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 118 flow. Second operand 3 states and 67 transitions. [2024-11-07 23:37:24,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 50 transitions, 208 flow [2024-11-07 23:37:24,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 50 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:24,156 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 115 flow [2024-11-07 23:37:24,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2024-11-07 23:37:24,156 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -35 predicate places. [2024-11-07 23:37:24,156 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 115 flow [2024-11-07 23:37:24,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:24,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:24,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:37:24,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 23:37:24,156 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:37:24,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:24,157 INFO L85 PathProgramCache]: Analyzing trace with hash 70026887, now seen corresponding path program 1 times [2024-11-07 23:37:24,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:24,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172925005] [2024-11-07 23:37:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:24,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:24,190 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 23:37:24,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:24,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172925005] [2024-11-07 23:37:24,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172925005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:24,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:24,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:37:24,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930930403] [2024-11-07 23:37:24,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:24,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:24,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:37:24,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:24,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:24,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:37:24,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:28,547 INFO L124 PetriNetUnfolderBase]: 10436/15302 cut-off events. [2024-11-07 23:37:28,547 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-07 23:37:28,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30767 conditions, 15302 events. 10436/15302 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 3140. Compared 120251 event pairs, 10436 based on Foata normal form. 0/4787 useless extension candidates. Maximal degree in co-relation 30763. Up to 15162 conditions per place. [2024-11-07 23:37:28,587 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 44 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-11-07 23:37:28,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 48 transitions, 201 flow [2024-11-07 23:37:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-07 23:37:28,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.22807017543859648 [2024-11-07 23:37:28,588 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 115 flow. Second operand 3 states and 65 transitions. [2024-11-07 23:37:28,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 48 transitions, 201 flow [2024-11-07 23:37:28,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:28,589 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 112 flow [2024-11-07 23:37:28,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-11-07 23:37:28,589 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -36 predicate places. [2024-11-07 23:37:28,589 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 112 flow [2024-11-07 23:37:28,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:28,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:28,590 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:37:28,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 23:37:28,590 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:37:28,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:28,590 INFO L85 PathProgramCache]: Analyzing trace with hash 70026888, now seen corresponding path program 1 times [2024-11-07 23:37:28,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:28,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771880595] [2024-11-07 23:37:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:28,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:28,632 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 23:37:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771880595] [2024-11-07 23:37:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771880595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:28,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:28,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:37:28,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450892282] [2024-11-07 23:37:28,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:28,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:28,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:28,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:37:28,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:28,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:28,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:37:28,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:32,324 INFO L124 PetriNetUnfolderBase]: 8698/12788 cut-off events. [2024-11-07 23:37:32,325 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-07 23:37:32,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25716 conditions, 12788 events. 8698/12788 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 2582. Compared 98711 event pairs, 8698 based on Foata normal form. 0/4157 useless extension candidates. Maximal degree in co-relation 25712. Up to 12671 conditions per place. [2024-11-07 23:37:32,371 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 42 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-11-07 23:37:32,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 46 transitions, 194 flow [2024-11-07 23:37:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-07 23:37:32,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.22105263157894736 [2024-11-07 23:37:32,374 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 112 flow. Second operand 3 states and 63 transitions. [2024-11-07 23:37:32,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 46 transitions, 194 flow [2024-11-07 23:37:32,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:32,375 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 109 flow [2024-11-07 23:37:32,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2024-11-07 23:37:32,376 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -37 predicate places. [2024-11-07 23:37:32,376 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 109 flow [2024-11-07 23:37:32,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:32,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:32,377 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:37:32,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 23:37:32,377 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:37:32,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:32,381 INFO L85 PathProgramCache]: Analyzing trace with hash 70026890, now seen corresponding path program 1 times [2024-11-07 23:37:32,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:32,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12220373] [2024-11-07 23:37:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:32,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:32,436 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 23:37:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12220373] [2024-11-07 23:37:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12220373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:32,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:32,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:37:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073651338] [2024-11-07 23:37:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:32,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:32,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:32,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:32,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:37:32,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:32,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:32,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:37:32,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:35,592 INFO L124 PetriNetUnfolderBase]: 7223/10660 cut-off events. [2024-11-07 23:37:35,593 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-07 23:37:35,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21447 conditions, 10660 events. 7223/10660 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 2105. Compared 80785 event pairs, 7223 based on Foata normal form. 0/3614 useless extension candidates. Maximal degree in co-relation 21443. Up to 10556 conditions per place. [2024-11-07 23:37:35,627 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 40 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2024-11-07 23:37:35,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 44 transitions, 187 flow [2024-11-07 23:37:35,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:35,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-11-07 23:37:35,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.21403508771929824 [2024-11-07 23:37:35,629 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 109 flow. Second operand 3 states and 61 transitions. [2024-11-07 23:37:35,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 44 transitions, 187 flow [2024-11-07 23:37:35,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 44 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:35,630 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 106 flow [2024-11-07 23:37:35,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2024-11-07 23:37:35,631 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -38 predicate places. [2024-11-07 23:37:35,632 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 106 flow [2024-11-07 23:37:35,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:35,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:35,632 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:37:35,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 23:37:35,632 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:37:35,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash 70026891, now seen corresponding path program 1 times [2024-11-07 23:37:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:35,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755499841] [2024-11-07 23:37:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:35,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:35,714 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 23:37:35,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755499841] [2024-11-07 23:37:35,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755499841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:35,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:35,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:37:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633088540] [2024-11-07 23:37:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:35,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:35,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:35,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:37:35,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:35,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:35,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:37:35,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:38,268 INFO L124 PetriNetUnfolderBase]: 5874/8710 cut-off events. [2024-11-07 23:37:38,268 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-07 23:37:38,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17534 conditions, 8710 events. 5874/8710 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 64618 event pairs, 5874 based on Foata normal form. 0/3105 useless extension candidates. Maximal degree in co-relation 17530. Up to 8619 conditions per place. [2024-11-07 23:37:38,292 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 38 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2024-11-07 23:37:38,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 42 transitions, 180 flow [2024-11-07 23:37:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-07 23:37:38,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.20701754385964913 [2024-11-07 23:37:38,293 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 106 flow. Second operand 3 states and 59 transitions. [2024-11-07 23:37:38,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 42 transitions, 180 flow [2024-11-07 23:37:38,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 42 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:38,294 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 103 flow [2024-11-07 23:37:38,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2024-11-07 23:37:38,294 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -39 predicate places. [2024-11-07 23:37:38,294 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 103 flow [2024-11-07 23:37:38,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:38,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:38,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:37:38,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 23:37:38,294 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:37:38,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:38,295 INFO L85 PathProgramCache]: Analyzing trace with hash 70026893, now seen corresponding path program 1 times [2024-11-07 23:37:38,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:38,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748221762] [2024-11-07 23:37:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:38,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:38,335 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 23:37:38,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:38,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748221762] [2024-11-07 23:37:38,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748221762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:38,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:38,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:37:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599927328] [2024-11-07 23:37:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:38,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:38,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:38,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:38,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:38,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:37:38,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:38,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:38,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:37:38,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 23:37:40,321 INFO L124 PetriNetUnfolderBase]: 4630/6900 cut-off events. [2024-11-07 23:37:40,321 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-07 23:37:40,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13895 conditions, 6900 events. 4630/6900 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 1290. Compared 50179 event pairs, 4630 based on Foata normal form. 0/2615 useless extension candidates. Maximal degree in co-relation 13891. Up to 6828 conditions per place. [2024-11-07 23:37:40,343 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 36 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2024-11-07 23:37:40,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 40 transitions, 173 flow [2024-11-07 23:37:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 23:37:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 23:37:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-07 23:37:40,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2 [2024-11-07 23:37:40,344 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 103 flow. Second operand 3 states and 57 transitions. [2024-11-07 23:37:40,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 40 transitions, 173 flow [2024-11-07 23:37:40,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 40 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 23:37:40,345 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 100 flow [2024-11-07 23:37:40,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2024-11-07 23:37:40,346 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -40 predicate places. [2024-11-07 23:37:40,346 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 100 flow [2024-11-07 23:37:40,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:40,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 23:37:40,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 23:37:40,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 23:37:40,346 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2024-11-07 23:37:40,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 23:37:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash 70026894, now seen corresponding path program 1 times [2024-11-07 23:37:40,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 23:37:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921130559] [2024-11-07 23:37:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 23:37:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 23:37:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 23:37:40,394 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 23:37:40,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 23:37:40,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921130559] [2024-11-07 23:37:40,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921130559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 23:37:40,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 23:37:40,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 23:37:40,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443356777] [2024-11-07 23:37:40,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 23:37:40,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 23:37:40,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 23:37:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 23:37:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 23:37:40,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 95 [2024-11-07 23:37:40,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:37:40,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 23:37:40,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 95 [2024-11-07 23:37:40,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand