./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:55:56,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:55:56,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:55:56,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:55:56,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:55:56,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:55:56,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:55:56,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:55:56,744 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:55:56,744 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:55:56,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:55:56,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:55:56,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:55:56,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:55:56,746 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:55:56,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:55:56,749 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:55:56,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:55:56,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:55:56,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:55:56,752 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:55:56,755 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:55:56,755 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:55:56,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:55:56,756 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:55:56,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:55:56,757 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:55:56,757 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:55:56,757 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:55:56,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:55:56,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:55:56,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:55:56,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:55:56,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:55:56,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:55:56,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:55:56,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:55:56,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:55:56,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:55:56,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:55:56,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:55:56,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:55:56,770 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2024-10-14 19:55:57,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:55:57,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:55:57,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:55:57,069 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:55:57,070 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:55:57,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-10-14 19:55:58,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:55:58,714 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:55:58,717 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-10-14 19:55:58,728 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2dcd7d9/5ed1d836cdb14a47b0797f8718430c3b/FLAGfd71e614e [2024-10-14 19:55:58,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2dcd7d9/5ed1d836cdb14a47b0797f8718430c3b [2024-10-14 19:55:58,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:55:58,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:55:58,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:55:58,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:55:58,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:55:58,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:55:58" (1/1) ... [2024-10-14 19:55:58,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274c25b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:58, skipping insertion in model container [2024-10-14 19:55:58,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:55:58" (1/1) ... [2024-10-14 19:55:58,787 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:55:58,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:55:58,997 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:55:58,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14f78740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:58, skipping insertion in model container [2024-10-14 19:55:58,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:55:58,998 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:55:59,001 INFO L158 Benchmark]: Toolchain (without parser) took 249.39ms. Allocated memory is still 178.3MB. Free memory was 121.7MB in the beginning and 110.8MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 19:55:59,001 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 178.3MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:55:59,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.20ms. Allocated memory is still 178.3MB. Free memory was 121.7MB in the beginning and 111.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:55:59,003 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 178.3MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.20ms. Allocated memory is still 178.3MB. Free memory was 121.7MB in the beginning and 111.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 109]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:56:01,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:56:01,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:56:01,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:56:01,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:56:01,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:56:01,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:56:01,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:56:01,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:56:01,178 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:56:01,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:56:01,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:56:01,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:56:01,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:56:01,180 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:56:01,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:56:01,182 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:56:01,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:56:01,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:56:01,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:56:01,186 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:56:01,187 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:56:01,187 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:56:01,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:56:01,187 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:56:01,188 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:56:01,188 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:56:01,188 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:56:01,188 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:56:01,188 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:56:01,188 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:56:01,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:56:01,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:56:01,189 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:56:01,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:56:01,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:01,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:56:01,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:56:01,191 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:56:01,191 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:56:01,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:56:01,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:56:01,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:56:01,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:56:01,193 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:56:01,193 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2024-10-14 19:56:01,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:56:01,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:56:01,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:56:01,544 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:56:01,545 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:56:01,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-10-14 19:56:03,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:56:03,301 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:56:03,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-10-14 19:56:03,310 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aedeb016f/73f52395b96c46ceb4d3efde4bd91f7a/FLAG1cd3d7116 [2024-10-14 19:56:03,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aedeb016f/73f52395b96c46ceb4d3efde4bd91f7a [2024-10-14 19:56:03,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:56:03,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:56:03,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:03,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:56:03,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:56:03,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5905b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03, skipping insertion in model container [2024-10-14 19:56:03,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,357 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:56:03,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:03,610 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:56:03,613 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:56:03,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:03,636 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:56:03,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:03,697 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:56:03,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03 WrapperNode [2024-10-14 19:56:03,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:03,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:56:03,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:56:03,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:56:03,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,748 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2024-10-14 19:56:03,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:56:03,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:56:03,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:56:03,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:56:03,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,786 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 19:56:03,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:56:03,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:56:03,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:56:03,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:56:03,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (1/1) ... [2024-10-14 19:56:03,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:03,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:56:03,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:56:03,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:56:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:56:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:56:03,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:56:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:56:03,909 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:56:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:56:03,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:56:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:56:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:56:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:56:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:56:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:56:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:56:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:56:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:56:03,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:56:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:56:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:56:03,914 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:56:04,057 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:56:04,059 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:56:04,465 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:56:04,466 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:56:04,763 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:56:04,764 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 19:56:04,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:04 BoogieIcfgContainer [2024-10-14 19:56:04,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:56:04,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:56:04,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:56:04,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:56:04,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:56:03" (1/3) ... [2024-10-14 19:56:04,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f4c8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:04, skipping insertion in model container [2024-10-14 19:56:04,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:03" (2/3) ... [2024-10-14 19:56:04,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f4c8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:04, skipping insertion in model container [2024-10-14 19:56:04,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:04" (3/3) ... [2024-10-14 19:56:04,773 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2024-10-14 19:56:04,788 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:56:04,788 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-14 19:56:04,788 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:56:04,862 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 19:56:04,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 50 transitions, 121 flow [2024-10-14 19:56:04,922 INFO L124 PetriNetUnfolderBase]: 4/47 cut-off events. [2024-10-14 19:56:04,925 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:56:04,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 4/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 106 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-14 19:56:04,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 50 transitions, 121 flow [2024-10-14 19:56:04,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 46 transitions, 110 flow [2024-10-14 19:56:04,942 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:56:04,948 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=None, 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;@596209a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:56:04,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-10-14 19:56:04,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:56:04,951 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:56:04,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:56:04,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:04,952 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:56:04,952 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:04,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash 488965, now seen corresponding path program 1 times [2024-10-14 19:56:04,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:04,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057718683] [2024-10-14 19:56:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:04,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:04,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:04,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:04,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:56:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:05,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:56:05,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:05,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:05,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:05,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:05,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057718683] [2024-10-14 19:56:05,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057718683] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:05,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:05,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:56:05,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625622982] [2024-10-14 19:56:05,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:05,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:56:05,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:56:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:56:05,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:05,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-10-14 19:56:05,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:05,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:05,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:05,699 INFO L124 PetriNetUnfolderBase]: 1316/1930 cut-off events. [2024-10-14 19:56:05,700 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-10-14 19:56:05,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3943 conditions, 1930 events. 1316/1930 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9807 event pairs, 1060 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 3637. Up to 1877 conditions per place. [2024-10-14 19:56:05,721 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 30 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-10-14 19:56:05,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 156 flow [2024-10-14 19:56:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:56:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:56:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-14 19:56:05,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-10-14 19:56:05,736 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 110 flow. Second operand 3 states and 67 transitions. [2024-10-14 19:56:05,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 156 flow [2024-10-14 19:56:05,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 144 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:56:05,742 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 84 flow [2024-10-14 19:56:05,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-10-14 19:56:05,750 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -13 predicate places. [2024-10-14 19:56:05,750 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 84 flow [2024-10-14 19:56:05,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-10-14 19:56:05,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:05,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:56:05,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 19:56:05,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:05,955 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:05,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash 488966, now seen corresponding path program 1 times [2024-10-14 19:56:05,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:05,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896405447] [2024-10-14 19:56:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:05,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:05,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:05,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:05,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:56:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:06,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:56:06,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:06,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:06,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:06,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:06,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896405447] [2024-10-14 19:56:06,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896405447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:06,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752172543] [2024-10-14 19:56:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:06,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:06,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:06,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:06,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:06,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:06,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:06,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:06,549 INFO L124 PetriNetUnfolderBase]: 1317/1933 cut-off events. [2024-10-14 19:56:06,550 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:56:06,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 1933 events. 1317/1933 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9835 event pairs, 1060 based on Foata normal form. 0/1379 useless extension candidates. Maximal degree in co-relation 3843. Up to 1882 conditions per place. [2024-10-14 19:56:06,561 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 32 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-10-14 19:56:06,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 164 flow [2024-10-14 19:56:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-10-14 19:56:06,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.365 [2024-10-14 19:56:06,564 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 84 flow. Second operand 4 states and 73 transitions. [2024-10-14 19:56:06,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 164 flow [2024-10-14 19:56:06,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:06,566 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 107 flow [2024-10-14 19:56:06,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-10-14 19:56:06,568 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -10 predicate places. [2024-10-14 19:56:06,568 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 107 flow [2024-10-14 19:56:06,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:06,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:06,569 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:56:06,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 19:56:06,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:06,772 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:06,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash 469911519, now seen corresponding path program 1 times [2024-10-14 19:56:06,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:06,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005903804] [2024-10-14 19:56:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:06,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:06,776 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:06,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:56:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:06,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:56:06,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:06,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:06,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:07,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:07,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005903804] [2024-10-14 19:56:07,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005903804] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:07,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:07,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:56:07,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717533595] [2024-10-14 19:56:07,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:07,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:56:07,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:07,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:56:07,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:56:07,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:07,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 107 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 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) [2024-10-14 19:56:07,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:07,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:07,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:07,999 INFO L124 PetriNetUnfolderBase]: 1320/1942 cut-off events. [2024-10-14 19:56:07,999 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:56:08,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 1942 events. 1320/1942 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9874 event pairs, 1060 based on Foata normal form. 0/1384 useless extension candidates. Maximal degree in co-relation 3850. Up to 1885 conditions per place. [2024-10-14 19:56:08,012 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 32 selfloop transitions, 13 changer transitions 0/49 dead transitions. [2024-10-14 19:56:08,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 233 flow [2024-10-14 19:56:08,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:56:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:56:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-10-14 19:56:08,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.276 [2024-10-14 19:56:08,018 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 107 flow. Second operand 10 states and 138 transitions. [2024-10-14 19:56:08,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 233 flow [2024-10-14 19:56:08,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:56:08,020 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 184 flow [2024-10-14 19:56:08,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-10-14 19:56:08,020 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-10-14 19:56:08,020 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 184 flow [2024-10-14 19:56:08,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 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) [2024-10-14 19:56:08,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:08,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:56:08,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-14 19:56:08,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:08,223 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:08,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1685151316, now seen corresponding path program 1 times [2024-10-14 19:56:08,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:08,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408332530] [2024-10-14 19:56:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:08,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:08,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:08,226 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:08,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:56:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:08,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:56:08,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:08,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:08,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:08,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:08,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408332530] [2024-10-14 19:56:08,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408332530] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:08,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:08,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:08,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244640577] [2024-10-14 19:56:08,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:08,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:08,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:08,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:08,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:08,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:08,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:08,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:08,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:08,516 INFO L124 PetriNetUnfolderBase]: 796/1187 cut-off events. [2024-10-14 19:56:08,517 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-14 19:56:08,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 1187 events. 796/1187 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5404 event pairs, 608 based on Foata normal form. 0/972 useless extension candidates. Maximal degree in co-relation 2381. Up to 1138 conditions per place. [2024-10-14 19:56:08,525 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 35 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2024-10-14 19:56:08,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 260 flow [2024-10-14 19:56:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-14 19:56:08,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-10-14 19:56:08,526 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 184 flow. Second operand 4 states and 68 transitions. [2024-10-14 19:56:08,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 260 flow [2024-10-14 19:56:08,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 230 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:08,531 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 160 flow [2024-10-14 19:56:08,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-14 19:56:08,532 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-10-14 19:56:08,532 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 160 flow [2024-10-14 19:56:08,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:08,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:08,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:56:08,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:08,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:08,733 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:08,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:08,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1685151317, now seen corresponding path program 1 times [2024-10-14 19:56:08,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:08,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759998533] [2024-10-14 19:56:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:08,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:08,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:08,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:08,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:56:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:08,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:56:08,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:08,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:08,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:08,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:08,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759998533] [2024-10-14 19:56:08,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759998533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:08,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:08,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:56:08,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132804876] [2024-10-14 19:56:08,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:08,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:56:08,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:56:08,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:56:08,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-14 19:56:08,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:08,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:08,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-14 19:56:08,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:09,317 INFO L124 PetriNetUnfolderBase]: 1152/1707 cut-off events. [2024-10-14 19:56:09,317 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 19:56:09,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 1707 events. 1152/1707 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8131 event pairs, 462 based on Foata normal form. 0/1449 useless extension candidates. Maximal degree in co-relation 3387. Up to 1200 conditions per place. [2024-10-14 19:56:09,328 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 50 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2024-10-14 19:56:09,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 316 flow [2024-10-14 19:56:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:56:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:56:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-10-14 19:56:09,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.392 [2024-10-14 19:56:09,331 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 160 flow. Second operand 5 states and 98 transitions. [2024-10-14 19:56:09,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 316 flow [2024-10-14 19:56:09,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:09,334 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 184 flow [2024-10-14 19:56:09,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-10-14 19:56:09,336 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-10-14 19:56:09,336 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 184 flow [2024-10-14 19:56:09,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:09,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:09,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:09,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-14 19:56:09,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:09,538 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:09,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash 200983104, now seen corresponding path program 1 times [2024-10-14 19:56:09,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:09,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892830007] [2024-10-14 19:56:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:09,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:09,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:09,540 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:09,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:56:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:09,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:56:09,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:09,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:09,767 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:09,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:09,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892830007] [2024-10-14 19:56:09,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892830007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:09,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:09,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:56:09,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30237854] [2024-10-14 19:56:09,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:09,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:56:09,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:09,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:56:09,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:56:09,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-14 19:56:09,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:09,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:09,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-14 19:56:09,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:10,203 INFO L124 PetriNetUnfolderBase]: 1691/2477 cut-off events. [2024-10-14 19:56:10,203 INFO L125 PetriNetUnfolderBase]: For 681/681 co-relation queries the response was YES. [2024-10-14 19:56:10,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 2477 events. 1691/2477 cut-off events. For 681/681 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12028 event pairs, 766 based on Foata normal form. 0/2240 useless extension candidates. Maximal degree in co-relation 5580. Up to 1707 conditions per place. [2024-10-14 19:56:10,217 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 53 selfloop transitions, 9 changer transitions 0/67 dead transitions. [2024-10-14 19:56:10,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 363 flow [2024-10-14 19:56:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:56:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:56:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-10-14 19:56:10,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.388 [2024-10-14 19:56:10,219 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 184 flow. Second operand 5 states and 97 transitions. [2024-10-14 19:56:10,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 363 flow [2024-10-14 19:56:10,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 67 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:10,223 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 200 flow [2024-10-14 19:56:10,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-10-14 19:56:10,224 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-10-14 19:56:10,224 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 200 flow [2024-10-14 19:56:10,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:10,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:10,224 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:10,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:10,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:10,430 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:10,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1529274391, now seen corresponding path program 1 times [2024-10-14 19:56:10,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:10,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176736674] [2024-10-14 19:56:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:10,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:10,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:10,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:10,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:56:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:10,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:56:10,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:10,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:10,631 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:10,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:10,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176736674] [2024-10-14 19:56:10,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176736674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:10,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:10,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:56:10,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622469720] [2024-10-14 19:56:10,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:10,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:56:10,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:56:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:56:10,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-14 19:56:10,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:10,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:10,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-14 19:56:10,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:11,126 INFO L124 PetriNetUnfolderBase]: 1853/2783 cut-off events. [2024-10-14 19:56:11,127 INFO L125 PetriNetUnfolderBase]: For 1232/1232 co-relation queries the response was YES. [2024-10-14 19:56:11,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6916 conditions, 2783 events. 1853/2783 cut-off events. For 1232/1232 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13857 event pairs, 1335 based on Foata normal form. 64/2735 useless extension candidates. Maximal degree in co-relation 6882. Up to 2344 conditions per place. [2024-10-14 19:56:11,142 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 67 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-10-14 19:56:11,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 422 flow [2024-10-14 19:56:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:56:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:56:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-10-14 19:56:11,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.456 [2024-10-14 19:56:11,147 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 200 flow. Second operand 5 states and 114 transitions. [2024-10-14 19:56:11,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 422 flow [2024-10-14 19:56:11,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 403 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:11,150 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 222 flow [2024-10-14 19:56:11,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-10-14 19:56:11,152 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2024-10-14 19:56:11,153 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 222 flow [2024-10-14 19:56:11,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:11,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:11,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:11,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-14 19:56:11,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:11,354 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:11,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:11,354 INFO L85 PathProgramCache]: Analyzing trace with hash -161455438, now seen corresponding path program 1 times [2024-10-14 19:56:11,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:11,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897287437] [2024-10-14 19:56:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:11,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:11,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:11,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:11,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-14 19:56:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:11,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:56:11,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:11,440 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:11,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897287437] [2024-10-14 19:56:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897287437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:11,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:11,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548533761] [2024-10-14 19:56:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:11,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:56:11,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:11,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:56:11,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:56:11,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-14 19:56:11,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:11,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:11,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-14 19:56:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:11,752 INFO L124 PetriNetUnfolderBase]: 1690/2476 cut-off events. [2024-10-14 19:56:11,752 INFO L125 PetriNetUnfolderBase]: For 2060/2060 co-relation queries the response was YES. [2024-10-14 19:56:11,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 2476 events. 1690/2476 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11743 event pairs, 1230 based on Foata normal form. 1/2413 useless extension candidates. Maximal degree in co-relation 6858. Up to 2344 conditions per place. [2024-10-14 19:56:11,773 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 42 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-10-14 19:56:11,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 286 flow [2024-10-14 19:56:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:56:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:56:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-10-14 19:56:11,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-10-14 19:56:11,774 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 222 flow. Second operand 3 states and 62 transitions. [2024-10-14 19:56:11,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 286 flow [2024-10-14 19:56:11,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:11,778 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 198 flow [2024-10-14 19:56:11,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-10-14 19:56:11,779 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-10-14 19:56:11,779 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 198 flow [2024-10-14 19:56:11,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:11,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:11,781 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:11,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 19:56:11,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:11,982 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:11,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash 719022850, now seen corresponding path program 1 times [2024-10-14 19:56:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:11,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798153190] [2024-10-14 19:56:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:11,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:11,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:11,984 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:11,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:56:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:12,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 19:56:12,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:12,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:12,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:12,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798153190] [2024-10-14 19:56:12,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798153190] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:12,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:12,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:56:12,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345612675] [2024-10-14 19:56:12,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:12,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:56:12,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:12,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:56:12,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:56:12,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:12,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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) [2024-10-14 19:56:12,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:12,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:12,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:14,819 INFO L124 PetriNetUnfolderBase]: 4243/5943 cut-off events. [2024-10-14 19:56:14,819 INFO L125 PetriNetUnfolderBase]: For 3388/3429 co-relation queries the response was YES. [2024-10-14 19:56:14,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16188 conditions, 5943 events. 4243/5943 cut-off events. For 3388/3429 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 29555 event pairs, 872 based on Foata normal form. 344/6259 useless extension candidates. Maximal degree in co-relation 16164. Up to 1728 conditions per place. [2024-10-14 19:56:14,855 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 180 selfloop transitions, 17 changer transitions 0/201 dead transitions. [2024-10-14 19:56:14,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 201 transitions, 1089 flow [2024-10-14 19:56:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:56:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:56:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 280 transitions. [2024-10-14 19:56:14,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-14 19:56:14,857 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 198 flow. Second operand 12 states and 280 transitions. [2024-10-14 19:56:14,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 201 transitions, 1089 flow [2024-10-14 19:56:14,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 201 transitions, 1085 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:14,864 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 284 flow [2024-10-14 19:56:14,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=284, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-10-14 19:56:14,866 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-10-14 19:56:14,866 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 284 flow [2024-10-14 19:56:14,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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) [2024-10-14 19:56:14,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:14,866 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:56:14,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-14 19:56:15,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:15,070 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:15,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:15,070 INFO L85 PathProgramCache]: Analyzing trace with hash -961638422, now seen corresponding path program 2 times [2024-10-14 19:56:15,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:15,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126252426] [2024-10-14 19:56:15,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:15,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:15,072 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:15,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:56:15,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:56:15,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:15,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:56:15,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:15,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:15,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:16,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126252426] [2024-10-14 19:56:16,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126252426] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:16,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:16,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:56:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079547719] [2024-10-14 19:56:16,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:16,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:56:16,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:56:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:56:16,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:16,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 284 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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) [2024-10-14 19:56:16,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:16,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:16,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:18,867 INFO L124 PetriNetUnfolderBase]: 3164/4764 cut-off events. [2024-10-14 19:56:18,867 INFO L125 PetriNetUnfolderBase]: For 6278/6342 co-relation queries the response was YES. [2024-10-14 19:56:18,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14942 conditions, 4764 events. 3164/4764 cut-off events. For 6278/6342 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 25580 event pairs, 2366 based on Foata normal form. 70/4774 useless extension candidates. Maximal degree in co-relation 14833. Up to 4371 conditions per place. [2024-10-14 19:56:18,893 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 38 selfloop transitions, 30 changer transitions 0/76 dead transitions. [2024-10-14 19:56:18,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 528 flow [2024-10-14 19:56:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:56:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:56:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 263 transitions. [2024-10-14 19:56:18,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2390909090909091 [2024-10-14 19:56:18,896 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 284 flow. Second operand 22 states and 263 transitions. [2024-10-14 19:56:18,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 528 flow [2024-10-14 19:56:18,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 76 transitions, 502 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:18,912 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 456 flow [2024-10-14 19:56:18,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=456, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-10-14 19:56:18,913 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-10-14 19:56:18,913 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 456 flow [2024-10-14 19:56:18,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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) [2024-10-14 19:56:18,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:18,914 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:18,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-14 19:56:19,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:19,117 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:19,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:19,118 INFO L85 PathProgramCache]: Analyzing trace with hash 816282297, now seen corresponding path program 1 times [2024-10-14 19:56:19,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:19,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148535579] [2024-10-14 19:56:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:19,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:19,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:19,119 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:19,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-14 19:56:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:19,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 19:56:19,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:19,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:19,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:19,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:19,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148535579] [2024-10-14 19:56:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148535579] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:19,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:19,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:56:19,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36396568] [2024-10-14 19:56:19,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:19,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:56:19,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:56:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:56:20,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:20,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 456 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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) [2024-10-14 19:56:20,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:20,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:20,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:23,320 INFO L124 PetriNetUnfolderBase]: 11832/17576 cut-off events. [2024-10-14 19:56:23,320 INFO L125 PetriNetUnfolderBase]: For 23752/24322 co-relation queries the response was YES. [2024-10-14 19:56:23,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52770 conditions, 17576 events. 11832/17576 cut-off events. For 23752/24322 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 110954 event pairs, 5769 based on Foata normal form. 826/18346 useless extension candidates. Maximal degree in co-relation 52711. Up to 3781 conditions per place. [2024-10-14 19:56:23,435 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 219 selfloop transitions, 34 changer transitions 0/261 dead transitions. [2024-10-14 19:56:23,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 261 transitions, 1826 flow [2024-10-14 19:56:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:56:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:56:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 290 transitions. [2024-10-14 19:56:23,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-10-14 19:56:23,439 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 456 flow. Second operand 14 states and 290 transitions. [2024-10-14 19:56:23,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 261 transitions, 1826 flow [2024-10-14 19:56:23,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 261 transitions, 1748 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-14 19:56:23,478 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 505 flow [2024-10-14 19:56:23,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=505, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2024-10-14 19:56:23,479 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-10-14 19:56:23,479 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 505 flow [2024-10-14 19:56:23,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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) [2024-10-14 19:56:23,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:23,480 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:23,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-14 19:56:23,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:23,681 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:23,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:23,681 INFO L85 PathProgramCache]: Analyzing trace with hash 548912096, now seen corresponding path program 1 times [2024-10-14 19:56:23,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:23,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125333516] [2024-10-14 19:56:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:23,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:23,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:23,683 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:23,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-14 19:56:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:23,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 19:56:23,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:23,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:24,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:24,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125333516] [2024-10-14 19:56:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125333516] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:24,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:24,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:56:24,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366491109] [2024-10-14 19:56:24,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:24,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:56:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:56:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:56:24,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:24,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 505 flow. Second operand has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 12 states have internal predecessors, (134), 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) [2024-10-14 19:56:24,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:24,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:24,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:29,507 INFO L124 PetriNetUnfolderBase]: 29492/40672 cut-off events. [2024-10-14 19:56:29,507 INFO L125 PetriNetUnfolderBase]: For 82402/85574 co-relation queries the response was YES. [2024-10-14 19:56:29,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137160 conditions, 40672 events. 29492/40672 cut-off events. For 82402/85574 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 242581 event pairs, 5514 based on Foata normal form. 3822/44443 useless extension candidates. Maximal degree in co-relation 137107. Up to 13070 conditions per place. [2024-10-14 19:56:29,822 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 292 selfloop transitions, 24 changer transitions 0/324 dead transitions. [2024-10-14 19:56:29,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 324 transitions, 2435 flow [2024-10-14 19:56:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:56:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:56:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 245 transitions. [2024-10-14 19:56:29,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-10-14 19:56:29,826 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 505 flow. Second operand 11 states and 245 transitions. [2024-10-14 19:56:29,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 324 transitions, 2435 flow [2024-10-14 19:56:29,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 324 transitions, 2425 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:56:29,913 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 616 flow [2024-10-14 19:56:29,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=616, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-10-14 19:56:29,914 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-10-14 19:56:29,914 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 616 flow [2024-10-14 19:56:29,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 12 states have internal predecessors, (134), 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) [2024-10-14 19:56:29,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:29,914 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:29,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-14 19:56:30,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:30,115 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:30,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:30,116 INFO L85 PathProgramCache]: Analyzing trace with hash -238338345, now seen corresponding path program 1 times [2024-10-14 19:56:30,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:30,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532843732] [2024-10-14 19:56:30,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:30,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:30,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:30,122 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:30,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-14 19:56:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:30,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:56:30,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:30,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:30,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:30,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532843732] [2024-10-14 19:56:30,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532843732] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:30,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:30,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-14 19:56:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838493092] [2024-10-14 19:56:30,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:30,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:56:30,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:30,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:56:30,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:56:30,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:30,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 616 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 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) [2024-10-14 19:56:30,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:30,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:30,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:34,262 INFO L124 PetriNetUnfolderBase]: 22229/32181 cut-off events. [2024-10-14 19:56:34,263 INFO L125 PetriNetUnfolderBase]: For 93134/95906 co-relation queries the response was YES. [2024-10-14 19:56:34,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121822 conditions, 32181 events. 22229/32181 cut-off events. For 93134/95906 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 199750 event pairs, 13231 based on Foata normal form. 2812/34985 useless extension candidates. Maximal degree in co-relation 121766. Up to 21248 conditions per place. [2024-10-14 19:56:34,525 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 150 selfloop transitions, 25 changer transitions 0/187 dead transitions. [2024-10-14 19:56:34,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 187 transitions, 1515 flow [2024-10-14 19:56:34,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:56:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:56:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-10-14 19:56:34,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-10-14 19:56:34,527 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 616 flow. Second operand 8 states and 160 transitions. [2024-10-14 19:56:34,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 187 transitions, 1515 flow [2024-10-14 19:56:34,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 187 transitions, 1443 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:34,712 INFO L231 Difference]: Finished difference. Result has 112 places, 95 transitions, 634 flow [2024-10-14 19:56:34,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=112, PETRI_TRANSITIONS=95} [2024-10-14 19:56:34,713 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-10-14 19:56:34,714 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 95 transitions, 634 flow [2024-10-14 19:56:34,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 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) [2024-10-14 19:56:34,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:34,714 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:34,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-14 19:56:34,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:34,918 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:34,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:34,918 INFO L85 PathProgramCache]: Analyzing trace with hash 203756336, now seen corresponding path program 2 times [2024-10-14 19:56:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:34,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949012950] [2024-10-14 19:56:34,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:34,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:34,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:34,922 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:34,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-14 19:56:35,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:56:35,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:35,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 19:56:35,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:35,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:35,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:37,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:37,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949012950] [2024-10-14 19:56:37,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949012950] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:37,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:37,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2024-10-14 19:56:37,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174964034] [2024-10-14 19:56:37,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:37,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:56:37,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:37,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:56:37,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:56:38,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-14 19:56:38,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 95 transitions, 634 flow. Second operand has 17 states, 17 states have (on average 11.0) internal successors, (187), 17 states have internal predecessors, (187), 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) [2024-10-14 19:56:38,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:38,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-14 19:56:38,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:53,928 INFO L124 PetriNetUnfolderBase]: 47625/66659 cut-off events. [2024-10-14 19:56:53,929 INFO L125 PetriNetUnfolderBase]: For 188084/196086 co-relation queries the response was YES. [2024-10-14 19:56:54,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253136 conditions, 66659 events. 47625/66659 cut-off events. For 188084/196086 co-relation queries the response was YES. Maximal size of possible extension queue 1394. Compared 431301 event pairs, 16087 based on Foata normal form. 6202/72853 useless extension candidates. Maximal degree in co-relation 253077. Up to 16257 conditions per place. [2024-10-14 19:56:54,695 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 474 selfloop transitions, 47 changer transitions 0/533 dead transitions. [2024-10-14 19:56:54,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 533 transitions, 4190 flow [2024-10-14 19:56:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:56:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:56:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 477 transitions. [2024-10-14 19:56:54,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43363636363636365 [2024-10-14 19:56:54,698 INFO L175 Difference]: Start difference. First operand has 112 places, 95 transitions, 634 flow. Second operand 22 states and 477 transitions. [2024-10-14 19:56:54,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 533 transitions, 4190 flow [2024-10-14 19:56:55,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 533 transitions, 4156 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-14 19:56:55,143 INFO L231 Difference]: Finished difference. Result has 134 places, 113 transitions, 860 flow [2024-10-14 19:56:55,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=860, PETRI_PLACES=134, PETRI_TRANSITIONS=113} [2024-10-14 19:56:55,144 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 82 predicate places. [2024-10-14 19:56:55,144 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 113 transitions, 860 flow [2024-10-14 19:56:55,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.0) internal successors, (187), 17 states have internal predecessors, (187), 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) [2024-10-14 19:56:55,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:55,145 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:55,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-14 19:56:55,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:55,345 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:56:55,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:55,346 INFO L85 PathProgramCache]: Analyzing trace with hash 935796814, now seen corresponding path program 2 times [2024-10-14 19:56:55,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:55,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030980146] [2024-10-14 19:56:55,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:55,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:55,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:55,347 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:55,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-14 19:56:55,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:56:55,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:55,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:56:55,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:55,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 19:56:55,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:55,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:55,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030980146] [2024-10-14 19:56:55,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030980146] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:55,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:55,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:56:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886721042] [2024-10-14 19:56:55,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:55,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:56:55,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:56:55,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:56:55,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-14 19:56:55,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 113 transitions, 860 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-10-14 19:56:55,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:55,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-14 19:56:55,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:02,400 INFO L124 PetriNetUnfolderBase]: 38039/56783 cut-off events. [2024-10-14 19:57:02,400 INFO L125 PetriNetUnfolderBase]: For 228073/234979 co-relation queries the response was YES. [2024-10-14 19:57:02,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234177 conditions, 56783 events. 38039/56783 cut-off events. For 228073/234979 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 401876 event pairs, 19977 based on Foata normal form. 6118/62693 useless extension candidates. Maximal degree in co-relation 234112. Up to 37965 conditions per place. [2024-10-14 19:57:02,970 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 105 selfloop transitions, 21 changer transitions 0/141 dead transitions. [2024-10-14 19:57:02,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 141 transitions, 1272 flow [2024-10-14 19:57:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:57:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:57:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-10-14 19:57:02,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.384 [2024-10-14 19:57:02,972 INFO L175 Difference]: Start difference. First operand has 134 places, 113 transitions, 860 flow. Second operand 5 states and 96 transitions. [2024-10-14 19:57:02,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 141 transitions, 1272 flow [2024-10-14 19:57:03,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 141 transitions, 1233 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-10-14 19:57:03,684 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 864 flow [2024-10-14 19:57:03,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=864, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2024-10-14 19:57:03,685 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 79 predicate places. [2024-10-14 19:57:03,685 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 864 flow [2024-10-14 19:57:03,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-10-14 19:57:03,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:03,685 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:03,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-14 19:57:03,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:03,889 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:57:03,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:03,890 INFO L85 PathProgramCache]: Analyzing trace with hash 633548380, now seen corresponding path program 2 times [2024-10-14 19:57:03,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:03,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372758254] [2024-10-14 19:57:03,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:57:03,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:03,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:03,892 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:03,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-14 19:57:03,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:57:03,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:03,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:57:03,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:03,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:04,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:05,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:05,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372758254] [2024-10-14 19:57:05,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372758254] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:05,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:05,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2024-10-14 19:57:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518855205] [2024-10-14 19:57:05,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:05,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:57:05,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:05,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:57:05,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:57:05,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-14 19:57:05,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 864 flow. Second operand has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 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) [2024-10-14 19:57:05,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:05,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-14 19:57:05,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:16,323 INFO L124 PetriNetUnfolderBase]: 37387/55005 cut-off events. [2024-10-14 19:57:16,324 INFO L125 PetriNetUnfolderBase]: For 231843/238954 co-relation queries the response was YES. [2024-10-14 19:57:16,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228504 conditions, 55005 events. 37387/55005 cut-off events. For 231843/238954 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 373955 event pairs, 12123 based on Foata normal form. 4126/58961 useless extension candidates. Maximal degree in co-relation 228438. Up to 15872 conditions per place. [2024-10-14 19:57:16,850 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 505 selfloop transitions, 50 changer transitions 0/570 dead transitions. [2024-10-14 19:57:16,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 570 transitions, 5098 flow [2024-10-14 19:57:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 19:57:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 19:57:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 505 transitions. [2024-10-14 19:57:16,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-10-14 19:57:16,852 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 864 flow. Second operand 21 states and 505 transitions. [2024-10-14 19:57:16,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 570 transitions, 5098 flow [2024-10-14 19:57:17,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 570 transitions, 5020 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:57:17,322 INFO L231 Difference]: Finished difference. Result has 152 places, 136 transitions, 1119 flow [2024-10-14 19:57:17,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1119, PETRI_PLACES=152, PETRI_TRANSITIONS=136} [2024-10-14 19:57:17,323 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-10-14 19:57:17,323 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 136 transitions, 1119 flow [2024-10-14 19:57:17,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 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) [2024-10-14 19:57:17,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:17,323 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:17,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-14 19:57:17,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:17,524 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-14 19:57:17,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1682296121, now seen corresponding path program 2 times [2024-10-14 19:57:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836442414] [2024-10-14 19:57:17,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:57:17,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:17,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:17,527 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:17,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-14 19:57:17,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:57:17,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:17,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:57:17,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:17,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:18,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:19,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:19,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836442414] [2024-10-14 19:57:19,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836442414] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:19,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:19,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2024-10-14 19:57:19,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526302403] [2024-10-14 19:57:19,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:19,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:57:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:57:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:57:19,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-14 19:57:19,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 136 transitions, 1119 flow. Second operand has 18 states, 18 states have (on average 11.88888888888889) internal successors, (214), 18 states have internal predecessors, (214), 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) [2024-10-14 19:57:19,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:19,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-14 19:57:19,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand