./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/unroll-cond-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:03:48,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:03:48,743 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:03:48,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:03:48,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:03:48,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:03:48,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:03:48,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:03:48,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:03:48,773 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:03:48,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:03:48,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:03:48,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:03:48,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:03:48,774 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:03:48,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:03:48,775 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:03:48,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:03:48,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:03:48,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:03:48,776 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:03:48,779 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:03:48,780 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:03:48,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:03:48,780 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:03:48,780 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:03:48,780 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:03:48,780 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:03:48,780 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:03:48,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:03:48,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:03:48,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:03:48,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:03:48,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:48,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:03:48,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:03:48,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:03:48,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:03:48,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:03:48,782 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:03:48,782 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:03:48,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:03:48,786 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 [2024-10-11 20:03:48,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:03:49,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:03:49,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:03:49,023 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:03:49,024 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:03:49,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-10-11 20:03:50,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:03:50,545 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:03:50,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-10-11 20:03:50,556 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b4728b978/a64380d439574fab872f6a569c28d26b/FLAGb065addcb [2024-10-11 20:03:50,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b4728b978/a64380d439574fab872f6a569c28d26b [2024-10-11 20:03:50,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:03:50,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:03:50,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:50,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:03:50,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:03:50,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:50" (1/1) ... [2024-10-11 20:03:50,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5193e24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:50, skipping insertion in model container [2024-10-11 20:03:50,937 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:50" (1/1) ... [2024-10-11 20:03:50,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:51,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:51,143 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) [2024-10-11 20:03:51,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7529b13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:51, skipping insertion in model container [2024-10-11 20:03:51,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:51,145 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 20:03:51,146 INFO L158 Benchmark]: Toolchain (without parser) took 215.10ms. Allocated memory is still 167.8MB. Free memory was 138.4MB in the beginning and 129.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2024-10-11 20:03:51,146 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 130.0MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:03:51,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.33ms. Allocated memory is still 167.8MB. Free memory was 138.2MB in the beginning and 129.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2024-10-11 20:03:51,148 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 130.0MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.33ms. Allocated memory is still 167.8MB. Free memory was 138.2MB in the beginning and 129.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: 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-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:03:52,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:03:52,938 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 20:03:52,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:03:52,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:03:52,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:03:52,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:03:52,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:03:52,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:03:52,970 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:03:52,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:03:52,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:03:52,971 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:03:52,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:03:52,972 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:03:52,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:03:52,972 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:03:52,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:03:52,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:03:52,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:03:52,973 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:03:52,974 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:03:52,974 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:03:52,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:03:52,975 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:03:52,975 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 20:03:52,975 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:03:52,975 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 20:03:52,976 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:03:52,976 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:03:52,976 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:03:52,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:03:52,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:03:52,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:03:52,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:03:52,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:52,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:03:52,978 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:03:52,978 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 20:03:52,978 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 20:03:52,978 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:03:52,979 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:03:52,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:03:52,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:03:52,979 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 20:03:52,979 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 [2024-10-11 20:03:53,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:03:53,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:03:53,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:03:53,262 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:03:53,263 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:03:53,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-10-11 20:03:54,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:03:54,870 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:03:54,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-10-11 20:03:54,878 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1a3d65049/3627e763ac2d4ad88fde4a8f442b94b3/FLAG11679897f [2024-10-11 20:03:54,891 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1a3d65049/3627e763ac2d4ad88fde4a8f442b94b3 [2024-10-11 20:03:54,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:03:54,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:03:54,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:54,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:03:54,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:03:54,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:54" (1/1) ... [2024-10-11 20:03:54,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353cf20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:54, skipping insertion in model container [2024-10-11 20:03:54,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:54" (1/1) ... [2024-10-11 20:03:54,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:55,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:55,161 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 20:03:55,165 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:55,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:55,193 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:03:55,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:55,243 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:03:55,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55 WrapperNode [2024-10-11 20:03:55,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:55,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:03:55,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:03:55,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:03:55,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,294 INFO L138 Inliner]: procedures = 25, calls = 32, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 176 [2024-10-11 20:03:55,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:03:55,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:03:55,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:03:55,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:03:55,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,331 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 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]. [2024-10-11 20:03:55,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:03:55,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:03:55,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:03:55,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:03:55,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (1/1) ... [2024-10-11 20:03:55,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:55,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:03:55,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 20:03:55,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 20:03:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:03:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:03:55,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:03:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:03:55,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:03:55,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 20:03:55,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 20:03:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 20:03:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 20:03:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 20:03:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:03:55,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:03:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 20:03:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 20:03:55,436 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 20:03:55,522 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:03:55,524 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:03:55,912 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:03:55,912 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:03:56,170 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:03:56,170 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 20:03:56,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:03:56 BoogieIcfgContainer [2024-10-11 20:03:56,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:03:56,173 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:03:56,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:03:56,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:03:56,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:03:54" (1/3) ... [2024-10-11 20:03:56,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155870f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:03:56, skipping insertion in model container [2024-10-11 20:03:56,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:55" (2/3) ... [2024-10-11 20:03:56,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155870f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:03:56, skipping insertion in model container [2024-10-11 20:03:56,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:03:56" (3/3) ... [2024-10-11 20:03:56,179 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2024-10-11 20:03:56,192 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:03:56,192 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-11 20:03:56,192 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:03:56,252 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 20:03:56,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions, 126 flow [2024-10-11 20:03:56,303 INFO L124 PetriNetUnfolderBase]: 6/54 cut-off events. [2024-10-11 20:03:56,304 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 20:03:56,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 54 events. 6/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 149 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2024-10-11 20:03:56,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 56 transitions, 126 flow [2024-10-11 20:03:56,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 53 transitions, 118 flow [2024-10-11 20:03:56,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:03:56,326 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;@7634645e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:03:56,326 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-11 20:03:56,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:03:56,330 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 20:03:56,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 20:03:56,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:56,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:03:56,332 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:03:56,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:56,336 INFO L85 PathProgramCache]: Analyzing trace with hash 593928, now seen corresponding path program 1 times [2024-10-11 20:03:56,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:56,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337999843] [2024-10-11 20:03:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:56,346 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 [2024-10-11 20:03:56,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:56,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/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) [2024-10-11 20:03:56,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:03:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:56,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:56,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:56,469 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 [2024-10-11 20:03:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:56,484 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:56,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:56,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337999843] [2024-10-11 20:03:56,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337999843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:56,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:56,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:03:56,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251988002] [2024-10-11 20:03:56,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:56,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:03:56,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:56,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:03:56,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:03:56,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-10-11 20:03:56,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-10-11 20:03:56,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:56,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-10-11 20:03:56,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:56,729 INFO L124 PetriNetUnfolderBase]: 182/445 cut-off events. [2024-10-11 20:03:56,729 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-11 20:03:56,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 445 events. 182/445 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2480 event pairs, 119 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 670. Up to 293 conditions per place. [2024-10-11 20:03:56,734 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 27 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-10-11 20:03:56,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 170 flow [2024-10-11 20:03:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:03:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:03:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-10-11 20:03:56,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6130952380952381 [2024-10-11 20:03:56,747 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 118 flow. Second operand 3 states and 103 transitions. [2024-10-11 20:03:56,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 170 flow [2024-10-11 20:03:56,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:56,753 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 108 flow [2024-10-11 20:03:56,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2024-10-11 20:03:56,761 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2024-10-11 20:03:56,761 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 108 flow [2024-10-11 20:03:56,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-10-11 20:03:56,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:56,761 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:03:56,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:56,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/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 [2024-10-11 20:03:56,962 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:03:56,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash 593929, now seen corresponding path program 1 times [2024-10-11 20:03:56,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:56,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494306508] [2024-10-11 20:03:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:56,963 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 [2024-10-11 20:03:56,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:56,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/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) [2024-10-11 20:03:56,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:03:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:57,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:03:57,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:57,038 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 [2024-10-11 20:03:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:57,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:57,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494306508] [2024-10-11 20:03:57,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494306508] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:57,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:57,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:03:57,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414122399] [2024-10-11 20:03:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:57,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:57,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:57,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:57,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-10-11 20:03:57,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-10-11 20:03:57,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:57,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-10-11 20:03:57,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:57,455 INFO L124 PetriNetUnfolderBase]: 182/447 cut-off events. [2024-10-11 20:03:57,455 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 20:03:57,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 447 events. 182/447 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2482 event pairs, 119 based on Foata normal form. 1/351 useless extension candidates. Maximal degree in co-relation 736. Up to 297 conditions per place. [2024-10-11 20:03:57,458 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 30 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-10-11 20:03:57,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 176 flow [2024-10-11 20:03:57,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:03:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:03:57,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-11 20:03:57,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-10-11 20:03:57,460 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 108 flow. Second operand 3 states and 106 transitions. [2024-10-11 20:03:57,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 176 flow [2024-10-11 20:03:57,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:03:57,462 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 118 flow [2024-10-11 20:03:57,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2024-10-11 20:03:57,463 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2024-10-11 20:03:57,463 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 118 flow [2024-10-11 20:03:57,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-10-11 20:03:57,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:57,463 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 20:03:57,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:03:57,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/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 [2024-10-11 20:03:57,667 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:03:57,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash 570785020, now seen corresponding path program 1 times [2024-10-11 20:03:57,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:57,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848849208] [2024-10-11 20:03:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:57,668 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 [2024-10-11 20:03:57,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:57,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/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) [2024-10-11 20:03:57,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:03:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:57,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:03:57,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:57,736 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 [2024-10-11 20:03:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:57,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:58,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848849208] [2024-10-11 20:03:58,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848849208] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:58,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:58,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:03:58,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138741109] [2024-10-11 20:03:58,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:58,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:03:58,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:58,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:03:58,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:03:58,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-10-11 20:03:58,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 118 flow. Second operand has 10 states, 10 states have (on average 25.0) internal successors, (250), 10 states have internal predecessors, (250), 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) [2024-10-11 20:03:58,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:58,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-10-11 20:03:58,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:58,977 INFO L124 PetriNetUnfolderBase]: 185/456 cut-off events. [2024-10-11 20:03:58,977 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 20:03:58,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 456 events. 185/456 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2550 event pairs, 119 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 771. Up to 300 conditions per place. [2024-10-11 20:03:58,980 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 30 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2024-10-11 20:03:58,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 232 flow [2024-10-11 20:03:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 20:03:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 20:03:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2024-10-11 20:03:58,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-10-11 20:03:58,987 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 118 flow. Second operand 9 states and 260 transitions. [2024-10-11 20:03:58,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 232 flow [2024-10-11 20:03:58,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:58,995 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 190 flow [2024-10-11 20:03:58,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-10-11 20:03:58,996 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-10-11 20:03:58,996 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 190 flow [2024-10-11 20:03:58,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.0) internal successors, (250), 10 states have internal predecessors, (250), 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) [2024-10-11 20:03:58,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:58,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:59,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:59,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/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 [2024-10-11 20:03:59,197 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:03:59,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash 483954286, now seen corresponding path program 1 times [2024-10-11 20:03:59,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:59,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633702403] [2024-10-11 20:03:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:59,201 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 [2024-10-11 20:03:59,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:59,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/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) [2024-10-11 20:03:59,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:03:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:59,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:03:59,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:59,258 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 [2024-10-11 20:03:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:59,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:59,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:59,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633702403] [2024-10-11 20:03:59,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633702403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:59,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:59,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:03:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944227010] [2024-10-11 20:03:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:59,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:59,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:59,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:59,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-10-11 20:03:59,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2024-10-11 20:03:59,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:59,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-10-11 20:03:59,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:59,477 INFO L124 PetriNetUnfolderBase]: 185/395 cut-off events. [2024-10-11 20:03:59,477 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 20:03:59,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 395 events. 185/395 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1820 event pairs, 119 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 714. Up to 295 conditions per place. [2024-10-11 20:03:59,481 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 35 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-10-11 20:03:59,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 254 flow [2024-10-11 20:03:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-11 20:03:59,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45089285714285715 [2024-10-11 20:03:59,484 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 190 flow. Second operand 4 states and 101 transitions. [2024-10-11 20:03:59,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 254 flow [2024-10-11 20:03:59,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 240 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:59,486 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 170 flow [2024-10-11 20:03:59,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-10-11 20:03:59,489 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-10-11 20:03:59,489 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 170 flow [2024-10-11 20:03:59,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2024-10-11 20:03:59,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:59,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:59,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:03:59,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/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 [2024-10-11 20:03:59,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:03:59,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash 483954287, now seen corresponding path program 1 times [2024-10-11 20:03:59,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:59,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396924057] [2024-10-11 20:03:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:59,691 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 [2024-10-11 20:03:59,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:59,692 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/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) [2024-10-11 20:03:59,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:03:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:59,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:03:59,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:59,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:59,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-11 20:04:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:00,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:00,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396924057] [2024-10-11 20:04:00,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396924057] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:00,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:00,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:04:00,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408301547] [2024-10-11 20:04:00,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:00,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:04:00,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:00,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:04:00,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:04:00,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-10-11 20:04:00,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 170 flow. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 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) [2024-10-11 20:04:00,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:00,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-10-11 20:04:00,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:00,842 INFO L124 PetriNetUnfolderBase]: 420/764 cut-off events. [2024-10-11 20:04:00,842 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-11 20:04:00,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 764 events. 420/764 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3742 event pairs, 140 based on Foata normal form. 0/649 useless extension candidates. Maximal degree in co-relation 1438. Up to 378 conditions per place. [2024-10-11 20:04:00,846 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 56 selfloop transitions, 8 changer transitions 0/76 dead transitions. [2024-10-11 20:04:00,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 347 flow [2024-10-11 20:04:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-10-11 20:04:00,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-11 20:04:00,849 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 170 flow. Second operand 6 states and 203 transitions. [2024-10-11 20:04:00,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 347 flow [2024-10-11 20:04:00,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:00,852 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 191 flow [2024-10-11 20:04:00,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-10-11 20:04:00,853 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-10-11 20:04:00,854 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 191 flow [2024-10-11 20:04:00,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 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) [2024-10-11 20:04:00,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:00,855 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:00,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:01,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:01,056 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:01,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1174914904, now seen corresponding path program 1 times [2024-10-11 20:04:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:01,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384961650] [2024-10-11 20:04:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:01,057 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 [2024-10-11 20:04:01,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:01,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:01,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:01,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:04:01,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:01,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:01,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-11 20:04:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:01,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:01,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384961650] [2024-10-11 20:04:01,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384961650] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:01,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:01,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:04:01,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82415189] [2024-10-11 20:04:01,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:01,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:04:01,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:01,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:04:01,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:04:01,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-10-11 20:04:01,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 191 flow. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 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) [2024-10-11 20:04:01,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:01,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-10-11 20:04:01,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:02,193 INFO L124 PetriNetUnfolderBase]: 759/1293 cut-off events. [2024-10-11 20:04:02,193 INFO L125 PetriNetUnfolderBase]: For 170/218 co-relation queries the response was YES. [2024-10-11 20:04:02,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1293 events. 759/1293 cut-off events. For 170/218 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6097 event pairs, 165 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 2684. Up to 849 conditions per place. [2024-10-11 20:04:02,200 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 56 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-10-11 20:04:02,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 370 flow [2024-10-11 20:04:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-10-11 20:04:02,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-10-11 20:04:02,202 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 191 flow. Second operand 6 states and 171 transitions. [2024-10-11 20:04:02,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 370 flow [2024-10-11 20:04:02,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 362 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:04:02,207 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 238 flow [2024-10-11 20:04:02,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-10-11 20:04:02,209 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-10-11 20:04:02,210 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 238 flow [2024-10-11 20:04:02,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 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) [2024-10-11 20:04:02,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:02,210 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:02,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)] Ended with exit code 0 [2024-10-11 20:04:02,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:02,414 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:02,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1223622003, now seen corresponding path program 1 times [2024-10-11 20:04:02,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:02,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320372812] [2024-10-11 20:04:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:02,415 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 [2024-10-11 20:04:02,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:02,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:02,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:02,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:04:02,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:02,490 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 [2024-10-11 20:04:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:02,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:03,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:03,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320372812] [2024-10-11 20:04:03,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320372812] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:03,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:03,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-11 20:04:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660681322] [2024-10-11 20:04:03,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:03,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:04:03,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:03,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:04:03,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:04:04,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-10-11 20:04:04,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 238 flow. Second operand has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 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) [2024-10-11 20:04:04,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:04,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-10-11 20:04:04,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:06,683 INFO L124 PetriNetUnfolderBase]: 1837/3369 cut-off events. [2024-10-11 20:04:06,683 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-10-11 20:04:06,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 3369 events. 1837/3369 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 20630 event pairs, 1125 based on Foata normal form. 0/2945 useless extension candidates. Maximal degree in co-relation 5025. Up to 1023 conditions per place. [2024-10-11 20:04:06,700 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 133 selfloop transitions, 16 changer transitions 0/160 dead transitions. [2024-10-11 20:04:06,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 160 transitions, 838 flow [2024-10-11 20:04:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:04:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:04:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 357 transitions. [2024-10-11 20:04:06,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-10-11 20:04:06,704 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 238 flow. Second operand 10 states and 357 transitions. [2024-10-11 20:04:06,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 160 transitions, 838 flow [2024-10-11 20:04:06,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 160 transitions, 808 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:04:06,710 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 292 flow [2024-10-11 20:04:06,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-10-11 20:04:06,711 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-10-11 20:04:06,711 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 292 flow [2024-10-11 20:04:06,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 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) [2024-10-11 20:04:06,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:06,712 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:06,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:06,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:06,916 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:06,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2062624306, now seen corresponding path program 1 times [2024-10-11 20:04:06,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:06,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271719860] [2024-10-11 20:04:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:06,917 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 [2024-10-11 20:04:06,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:06,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:06,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:06,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:04:06,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:06,995 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 [2024-10-11 20:04:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:07,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:07,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:07,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271719860] [2024-10-11 20:04:07,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271719860] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:07,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:07,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-11 20:04:07,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536319194] [2024-10-11 20:04:07,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:07,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:04:07,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:07,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:04:07,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:04:09,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-10-11 20:04:09,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 292 flow. Second operand has 11 states, 11 states have (on average 19.0) internal successors, (209), 11 states have internal predecessors, (209), 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) [2024-10-11 20:04:09,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:09,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-10-11 20:04:09,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:11,265 INFO L124 PetriNetUnfolderBase]: 1933/3277 cut-off events. [2024-10-11 20:04:11,265 INFO L125 PetriNetUnfolderBase]: For 1657/1705 co-relation queries the response was YES. [2024-10-11 20:04:11,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7880 conditions, 3277 events. 1933/3277 cut-off events. For 1657/1705 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17758 event pairs, 999 based on Foata normal form. 0/3057 useless extension candidates. Maximal degree in co-relation 6260. Up to 1181 conditions per place. [2024-10-11 20:04:11,281 INFO L140 encePairwiseOnDemand]: 37/56 looper letters, 95 selfloop transitions, 32 changer transitions 0/132 dead transitions. [2024-10-11 20:04:11,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 132 transitions, 750 flow [2024-10-11 20:04:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:04:11,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:04:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 293 transitions. [2024-10-11 20:04:11,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232142857142857 [2024-10-11 20:04:11,283 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 292 flow. Second operand 10 states and 293 transitions. [2024-10-11 20:04:11,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 132 transitions, 750 flow [2024-10-11 20:04:11,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 132 transitions, 742 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:04:11,289 INFO L231 Difference]: Finished difference. Result has 76 places, 86 transitions, 488 flow [2024-10-11 20:04:11,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=488, PETRI_PLACES=76, PETRI_TRANSITIONS=86} [2024-10-11 20:04:11,292 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-10-11 20:04:11,292 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 86 transitions, 488 flow [2024-10-11 20:04:11,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.0) internal successors, (209), 11 states have internal predecessors, (209), 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) [2024-10-11 20:04:11,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:11,293 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:04:11,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:11,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:11,494 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:11,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2040078507, now seen corresponding path program 2 times [2024-10-11 20:04:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:11,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240118028] [2024-10-11 20:04:11,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:11,494 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 [2024-10-11 20:04:11,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:11,495 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:11,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:11,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:04:11,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:11,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:04:11,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:11,558 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 [2024-10-11 20:04:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:11,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:12,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:12,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240118028] [2024-10-11 20:04:12,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240118028] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:12,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:12,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:04:12,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040084079] [2024-10-11 20:04:12,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:12,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:04:12,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:04:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:04:13,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-10-11 20:04:13,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 86 transitions, 488 flow. Second operand has 14 states, 14 states have (on average 25.571428571428573) internal successors, (358), 14 states have internal predecessors, (358), 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) [2024-10-11 20:04:13,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:13,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-10-11 20:04:13,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:16,497 INFO L124 PetriNetUnfolderBase]: 1790/3106 cut-off events. [2024-10-11 20:04:16,497 INFO L125 PetriNetUnfolderBase]: For 2184/2210 co-relation queries the response was YES. [2024-10-11 20:04:16,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8644 conditions, 3106 events. 1790/3106 cut-off events. For 2184/2210 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17452 event pairs, 1314 based on Foata normal form. 6/3082 useless extension candidates. Maximal degree in co-relation 6812. Up to 2727 conditions per place. [2024-10-11 20:04:16,519 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 63 selfloop transitions, 29 changer transitions 0/104 dead transitions. [2024-10-11 20:04:16,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 104 transitions, 852 flow [2024-10-11 20:04:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 20:04:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 20:04:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 569 transitions. [2024-10-11 20:04:16,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.483843537414966 [2024-10-11 20:04:16,523 INFO L175 Difference]: Start difference. First operand has 76 places, 86 transitions, 488 flow. Second operand 21 states and 569 transitions. [2024-10-11 20:04:16,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 104 transitions, 852 flow [2024-10-11 20:04:16,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 104 transitions, 827 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:04:16,552 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 731 flow [2024-10-11 20:04:16,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=731, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2024-10-11 20:04:16,554 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-10-11 20:04:16,554 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 731 flow [2024-10-11 20:04:16,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 25.571428571428573) internal successors, (358), 14 states have internal predecessors, (358), 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) [2024-10-11 20:04:16,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:16,555 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:16,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:16,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:16,755 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:16,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:16,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1274686138, now seen corresponding path program 2 times [2024-10-11 20:04:16,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:16,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667110074] [2024-10-11 20:04:16,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:16,756 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 [2024-10-11 20:04:16,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:16,757 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:16,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:16,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:16,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:16,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:04:16,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:16,813 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 [2024-10-11 20:04:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 20:04:16,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 20:04:17,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:17,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667110074] [2024-10-11 20:04:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667110074] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:17,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:17,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:04:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379482073] [2024-10-11 20:04:17,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:17,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:04:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:04:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:04:20,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-10-11 20:04:20,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 731 flow. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:20,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:20,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-10-11 20:04:20,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:21,179 INFO L124 PetriNetUnfolderBase]: 1754/3016 cut-off events. [2024-10-11 20:04:21,179 INFO L125 PetriNetUnfolderBase]: For 1889/1889 co-relation queries the response was YES. [2024-10-11 20:04:21,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8479 conditions, 3016 events. 1754/3016 cut-off events. For 1889/1889 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17048 event pairs, 936 based on Foata normal form. 44/3040 useless extension candidates. Maximal degree in co-relation 8413. Up to 2032 conditions per place. [2024-10-11 20:04:21,194 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 114 selfloop transitions, 20 changer transitions 0/146 dead transitions. [2024-10-11 20:04:21,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 146 transitions, 1206 flow [2024-10-11 20:04:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:04:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:04:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-10-11 20:04:21,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2024-10-11 20:04:21,196 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 731 flow. Second operand 5 states and 167 transitions. [2024-10-11 20:04:21,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 146 transitions, 1206 flow [2024-10-11 20:04:21,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 146 transitions, 1112 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-11 20:04:21,209 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 669 flow [2024-10-11 20:04:21,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=669, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2024-10-11 20:04:21,210 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-10-11 20:04:21,210 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 669 flow [2024-10-11 20:04:21,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:21,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:21,211 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:21,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:21,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:21,411 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:21,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:21,412 INFO L85 PathProgramCache]: Analyzing trace with hash -649354805, now seen corresponding path program 2 times [2024-10-11 20:04:21,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:21,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105079050] [2024-10-11 20:04:21,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:21,412 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 [2024-10-11 20:04:21,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:21,413 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:21,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:21,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:21,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:21,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:04:21,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:21,471 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 [2024-10-11 20:04:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 20:04:21,623 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:21,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:21,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105079050] [2024-10-11 20:04:21,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105079050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:21,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:21,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:04:21,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239025578] [2024-10-11 20:04:21,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:21,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:21,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-10-11 20:04:21,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 669 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-11 20:04:21,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:21,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-10-11 20:04:21,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:22,189 INFO L124 PetriNetUnfolderBase]: 1764/2954 cut-off events. [2024-10-11 20:04:22,189 INFO L125 PetriNetUnfolderBase]: For 2755/2755 co-relation queries the response was YES. [2024-10-11 20:04:22,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8518 conditions, 2954 events. 1764/2954 cut-off events. For 2755/2755 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15758 event pairs, 621 based on Foata normal form. 112/3036 useless extension candidates. Maximal degree in co-relation 8462. Up to 1387 conditions per place. [2024-10-11 20:04:22,201 INFO L140 encePairwiseOnDemand]: 39/56 looper letters, 60 selfloop transitions, 44 changer transitions 0/109 dead transitions. [2024-10-11 20:04:22,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 902 flow [2024-10-11 20:04:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:04:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:04:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-10-11 20:04:22,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-11 20:04:22,205 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 669 flow. Second operand 5 states and 132 transitions. [2024-10-11 20:04:22,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 902 flow [2024-10-11 20:04:22,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 822 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 20:04:22,212 INFO L231 Difference]: Finished difference. Result has 82 places, 96 transitions, 645 flow [2024-10-11 20:04:22,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=645, PETRI_PLACES=82, PETRI_TRANSITIONS=96} [2024-10-11 20:04:22,213 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-10-11 20:04:22,213 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 96 transitions, 645 flow [2024-10-11 20:04:22,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-11 20:04:22,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:22,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:22,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:22,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:22,415 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:22,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1365324076, now seen corresponding path program 1 times [2024-10-11 20:04:22,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:22,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79013210] [2024-10-11 20:04:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:22,416 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 [2024-10-11 20:04:22,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:22,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:22,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:22,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:04:22,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:22,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:22,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:22,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79013210] [2024-10-11 20:04:22,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79013210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:22,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:22,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:04:22,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745162730] [2024-10-11 20:04:22,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:22,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:04:22,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:22,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:04:22,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:04:22,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-10-11 20:04:22,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 96 transitions, 645 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-10-11 20:04:22,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:22,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-10-11 20:04:22,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:22,853 INFO L124 PetriNetUnfolderBase]: 1744/2910 cut-off events. [2024-10-11 20:04:22,853 INFO L125 PetriNetUnfolderBase]: For 2011/2011 co-relation queries the response was YES. [2024-10-11 20:04:22,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8367 conditions, 2910 events. 1744/2910 cut-off events. For 2011/2011 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15637 event pairs, 457 based on Foata normal form. 3/2882 useless extension candidates. Maximal degree in co-relation 8313. Up to 2163 conditions per place. [2024-10-11 20:04:22,868 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 114 selfloop transitions, 14 changer transitions 1/134 dead transitions. [2024-10-11 20:04:22,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 134 transitions, 1104 flow [2024-10-11 20:04:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:04:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:04:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-10-11 20:04:22,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7440476190476191 [2024-10-11 20:04:22,874 INFO L175 Difference]: Start difference. First operand has 82 places, 96 transitions, 645 flow. Second operand 3 states and 125 transitions. [2024-10-11 20:04:22,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 134 transitions, 1104 flow [2024-10-11 20:04:22,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 134 transitions, 974 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:04:22,882 INFO L231 Difference]: Finished difference. Result has 81 places, 109 transitions, 703 flow [2024-10-11 20:04:22,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=703, PETRI_PLACES=81, PETRI_TRANSITIONS=109} [2024-10-11 20:04:22,883 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-10-11 20:04:22,883 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 109 transitions, 703 flow [2024-10-11 20:04:22,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-10-11 20:04:22,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:22,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:22,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:23,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:23,084 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:23,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:23,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1102527074, now seen corresponding path program 1 times [2024-10-11 20:04:23,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:23,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990251808] [2024-10-11 20:04:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:23,085 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 [2024-10-11 20:04:23,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:23,086 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:23,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:23,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:04:23,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:23,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:23,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990251808] [2024-10-11 20:04:23,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990251808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:23,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:23,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:04:23,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229627891] [2024-10-11 20:04:23,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:23,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:23,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:23,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:23,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-10-11 20:04:23,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 109 transitions, 703 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 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) [2024-10-11 20:04:23,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:23,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-10-11 20:04:23,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:23,646 INFO L124 PetriNetUnfolderBase]: 1895/3135 cut-off events. [2024-10-11 20:04:23,646 INFO L125 PetriNetUnfolderBase]: For 1733/1733 co-relation queries the response was YES. [2024-10-11 20:04:23,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8872 conditions, 3135 events. 1895/3135 cut-off events. For 1733/1733 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 17260 event pairs, 682 based on Foata normal form. 27/3160 useless extension candidates. Maximal degree in co-relation 8818. Up to 1739 conditions per place. [2024-10-11 20:04:23,692 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 196 selfloop transitions, 10 changer transitions 0/209 dead transitions. [2024-10-11 20:04:23,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 209 transitions, 1605 flow [2024-10-11 20:04:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:04:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:04:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 195 transitions. [2024-10-11 20:04:23,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2024-10-11 20:04:23,694 INFO L175 Difference]: Start difference. First operand has 81 places, 109 transitions, 703 flow. Second operand 5 states and 195 transitions. [2024-10-11 20:04:23,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 209 transitions, 1605 flow [2024-10-11 20:04:23,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 209 transitions, 1570 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:23,701 INFO L231 Difference]: Finished difference. Result has 87 places, 112 transitions, 746 flow [2024-10-11 20:04:23,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=746, PETRI_PLACES=87, PETRI_TRANSITIONS=112} [2024-10-11 20:04:23,702 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2024-10-11 20:04:23,702 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 112 transitions, 746 flow [2024-10-11 20:04:23,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 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) [2024-10-11 20:04:23,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:23,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:23,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:23,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:23,903 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:23,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash 356382518, now seen corresponding path program 2 times [2024-10-11 20:04:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:23,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432820230] [2024-10-11 20:04:23,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:23,904 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 [2024-10-11 20:04:23,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:23,906 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:23,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:23,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:23,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:23,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:04:23,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:23,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:23,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:23,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432820230] [2024-10-11 20:04:23,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432820230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:23,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:23,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:04:23,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988040040] [2024-10-11 20:04:23,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:23,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:23,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:23,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:23,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:23,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-10-11 20:04:23,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 112 transitions, 746 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 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) [2024-10-11 20:04:23,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:23,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-10-11 20:04:23,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:24,446 INFO L124 PetriNetUnfolderBase]: 1628/2692 cut-off events. [2024-10-11 20:04:24,447 INFO L125 PetriNetUnfolderBase]: For 2946/2946 co-relation queries the response was YES. [2024-10-11 20:04:24,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8495 conditions, 2692 events. 1628/2692 cut-off events. For 2946/2946 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13372 event pairs, 799 based on Foata normal form. 96/2788 useless extension candidates. Maximal degree in co-relation 8438. Up to 1963 conditions per place. [2024-10-11 20:04:24,461 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 138 selfloop transitions, 15 changer transitions 0/155 dead transitions. [2024-10-11 20:04:24,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 155 transitions, 1263 flow [2024-10-11 20:04:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:04:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:04:24,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-10-11 20:04:24,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-10-11 20:04:24,462 INFO L175 Difference]: Start difference. First operand has 87 places, 112 transitions, 746 flow. Second operand 5 states and 169 transitions. [2024-10-11 20:04:24,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 155 transitions, 1263 flow [2024-10-11 20:04:24,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 155 transitions, 1199 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:24,470 INFO L231 Difference]: Finished difference. Result has 92 places, 104 transitions, 693 flow [2024-10-11 20:04:24,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=693, PETRI_PLACES=92, PETRI_TRANSITIONS=104} [2024-10-11 20:04:24,470 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-10-11 20:04:24,471 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 104 transitions, 693 flow [2024-10-11 20:04:24,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 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) [2024-10-11 20:04:24,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:24,471 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:24,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:24,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:24,672 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:24,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:24,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1692167682, now seen corresponding path program 1 times [2024-10-11 20:04:24,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:24,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777400185] [2024-10-11 20:04:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:24,673 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 [2024-10-11 20:04:24,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:24,674 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:24,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:24,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:04:24,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:24,793 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:24,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:24,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777400185] [2024-10-11 20:04:24,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777400185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:24,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:24,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:04:24,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557365636] [2024-10-11 20:04:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:24,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:24,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:24,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-10-11 20:04:24,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 104 transitions, 693 flow. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 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) [2024-10-11 20:04:24,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:24,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-10-11 20:04:24,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:25,265 INFO L124 PetriNetUnfolderBase]: 1784/3058 cut-off events. [2024-10-11 20:04:25,265 INFO L125 PetriNetUnfolderBase]: For 3848/3848 co-relation queries the response was YES. [2024-10-11 20:04:25,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 3058 events. 1784/3058 cut-off events. For 3848/3848 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 17124 event pairs, 582 based on Foata normal form. 42/3100 useless extension candidates. Maximal degree in co-relation 10070. Up to 1426 conditions per place. [2024-10-11 20:04:25,280 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 173 selfloop transitions, 24 changer transitions 0/202 dead transitions. [2024-10-11 20:04:25,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 202 transitions, 1614 flow [2024-10-11 20:04:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-10-11 20:04:25,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6815476190476191 [2024-10-11 20:04:25,281 INFO L175 Difference]: Start difference. First operand has 92 places, 104 transitions, 693 flow. Second operand 6 states and 229 transitions. [2024-10-11 20:04:25,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 202 transitions, 1614 flow [2024-10-11 20:04:25,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 202 transitions, 1566 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:25,292 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 897 flow [2024-10-11 20:04:25,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=897, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2024-10-11 20:04:25,292 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-10-11 20:04:25,292 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 897 flow [2024-10-11 20:04:25,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 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) [2024-10-11 20:04:25,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:25,293 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:25,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:25,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:25,494 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:25,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:25,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1736274200, now seen corresponding path program 2 times [2024-10-11 20:04:25,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:25,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440547461] [2024-10-11 20:04:25,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:25,494 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 [2024-10-11 20:04:25,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:25,497 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:25,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:25,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:25,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:25,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:04:25,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:25,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:25,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:25,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440547461] [2024-10-11 20:04:25,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440547461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:25,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:25,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 20:04:25,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103485524] [2024-10-11 20:04:25,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:25,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:04:25,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:25,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:04:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 20:04:25,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-10-11 20:04:25,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 897 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-10-11 20:04:25,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:25,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-10-11 20:04:25,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:26,069 INFO L124 PetriNetUnfolderBase]: 1991/3334 cut-off events. [2024-10-11 20:04:26,070 INFO L125 PetriNetUnfolderBase]: For 6549/6549 co-relation queries the response was YES. [2024-10-11 20:04:26,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12115 conditions, 3334 events. 1991/3334 cut-off events. For 6549/6549 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17597 event pairs, 828 based on Foata normal form. 69/3403 useless extension candidates. Maximal degree in co-relation 12053. Up to 2044 conditions per place. [2024-10-11 20:04:26,089 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 168 selfloop transitions, 24 changer transitions 2/196 dead transitions. [2024-10-11 20:04:26,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 196 transitions, 1791 flow [2024-10-11 20:04:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-10-11 20:04:26,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-10-11 20:04:26,093 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 897 flow. Second operand 6 states and 198 transitions. [2024-10-11 20:04:26,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 196 transitions, 1791 flow [2024-10-11 20:04:26,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 196 transitions, 1731 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:26,111 INFO L231 Difference]: Finished difference. Result has 104 places, 122 transitions, 945 flow [2024-10-11 20:04:26,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=945, PETRI_PLACES=104, PETRI_TRANSITIONS=122} [2024-10-11 20:04:26,112 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-10-11 20:04:26,116 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 122 transitions, 945 flow [2024-10-11 20:04:26,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-10-11 20:04:26,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:26,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:26,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:26,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:26,319 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:26,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:26,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2048993509, now seen corresponding path program 1 times [2024-10-11 20:04:26,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:26,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749757728] [2024-10-11 20:04:26,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:26,320 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 [2024-10-11 20:04:26,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:26,321 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:26,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 20:04:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:26,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:04:26,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:26,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:26,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:26,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749757728] [2024-10-11 20:04:26,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749757728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:26,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:26,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 20:04:26,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544331932] [2024-10-11 20:04:26,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:26,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 20:04:26,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:26,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 20:04:26,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 20:04:26,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-10-11 20:04:26,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 122 transitions, 945 flow. Second operand has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 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) [2024-10-11 20:04:26,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:26,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-10-11 20:04:26,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:27,207 INFO L124 PetriNetUnfolderBase]: 2232/3881 cut-off events. [2024-10-11 20:04:27,207 INFO L125 PetriNetUnfolderBase]: For 8503/8503 co-relation queries the response was YES. [2024-10-11 20:04:27,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13978 conditions, 3881 events. 2232/3881 cut-off events. For 8503/8503 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 22343 event pairs, 698 based on Foata normal form. 48/3903 useless extension candidates. Maximal degree in co-relation 13915. Up to 1657 conditions per place. [2024-10-11 20:04:27,231 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 232 selfloop transitions, 51 changer transitions 2/290 dead transitions. [2024-10-11 20:04:27,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 290 transitions, 2575 flow [2024-10-11 20:04:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 20:04:27,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 20:04:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 433 transitions. [2024-10-11 20:04:27,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5947802197802198 [2024-10-11 20:04:27,232 INFO L175 Difference]: Start difference. First operand has 104 places, 122 transitions, 945 flow. Second operand 13 states and 433 transitions. [2024-10-11 20:04:27,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 290 transitions, 2575 flow [2024-10-11 20:04:27,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 290 transitions, 2521 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:04:27,287 INFO L231 Difference]: Finished difference. Result has 122 places, 149 transitions, 1379 flow [2024-10-11 20:04:27,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1379, PETRI_PLACES=122, PETRI_TRANSITIONS=149} [2024-10-11 20:04:27,288 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-10-11 20:04:27,288 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 149 transitions, 1379 flow [2024-10-11 20:04:27,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 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) [2024-10-11 20:04:27,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:27,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:27,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)] Ended with exit code 0 [2024-10-11 20:04:27,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:27,490 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:27,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash 819143669, now seen corresponding path program 2 times [2024-10-11 20:04:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:27,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871471596] [2024-10-11 20:04:27,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:27,491 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 [2024-10-11 20:04:27,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:27,492 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:27,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (19)] Waiting until timeout for monitored process [2024-10-11 20:04:27,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:27,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:27,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:04:27,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:27,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:27,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:27,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871471596] [2024-10-11 20:04:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871471596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:27,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:27,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 20:04:27,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377176516] [2024-10-11 20:04:27,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:27,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 20:04:27,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 20:04:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 20:04:27,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-10-11 20:04:27,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 149 transitions, 1379 flow. Second operand has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 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) [2024-10-11 20:04:27,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:27,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-10-11 20:04:27,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:28,488 INFO L124 PetriNetUnfolderBase]: 2243/3970 cut-off events. [2024-10-11 20:04:28,488 INFO L125 PetriNetUnfolderBase]: For 19173/19173 co-relation queries the response was YES. [2024-10-11 20:04:28,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16542 conditions, 3970 events. 2243/3970 cut-off events. For 19173/19173 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23381 event pairs, 1078 based on Foata normal form. 48/4018 useless extension candidates. Maximal degree in co-relation 16469. Up to 2698 conditions per place. [2024-10-11 20:04:28,509 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 190 selfloop transitions, 79 changer transitions 3/277 dead transitions. [2024-10-11 20:04:28,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 277 transitions, 3016 flow [2024-10-11 20:04:28,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:04:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:04:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 341 transitions. [2024-10-11 20:04:28,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6089285714285714 [2024-10-11 20:04:28,511 INFO L175 Difference]: Start difference. First operand has 122 places, 149 transitions, 1379 flow. Second operand 10 states and 341 transitions. [2024-10-11 20:04:28,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 277 transitions, 3016 flow [2024-10-11 20:04:28,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 277 transitions, 2883 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-10-11 20:04:28,547 INFO L231 Difference]: Finished difference. Result has 134 places, 205 transitions, 2356 flow [2024-10-11 20:04:28,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2356, PETRI_PLACES=134, PETRI_TRANSITIONS=205} [2024-10-11 20:04:28,548 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2024-10-11 20:04:28,548 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 205 transitions, 2356 flow [2024-10-11 20:04:28,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 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) [2024-10-11 20:04:28,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:28,548 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 20:04:28,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (19)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:28,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:28,751 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:28,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash -743637049, now seen corresponding path program 3 times [2024-10-11 20:04:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343689731] [2024-10-11 20:04:28,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:04:28,752 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 [2024-10-11 20:04:28,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:28,753 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:28,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (20)] Waiting until timeout for monitored process [2024-10-11 20:04:28,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 20:04:28,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:28,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:04:28,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:28,932 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 [2024-10-11 20:04:29,328 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:29,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:31,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343689731] [2024-10-11 20:04:31,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343689731] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:31,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:31,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 20:04:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247165478] [2024-10-11 20:04:31,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:31,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 20:04:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 20:04:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 20:04:35,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-10-11 20:04:35,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 205 transitions, 2356 flow. Second operand has 26 states, 26 states have (on average 25.76923076923077) internal successors, (670), 26 states have internal predecessors, (670), 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) [2024-10-11 20:04:35,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:35,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-10-11 20:04:35,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:50,660 INFO L124 PetriNetUnfolderBase]: 2255/4006 cut-off events. [2024-10-11 20:04:50,660 INFO L125 PetriNetUnfolderBase]: For 26048/26048 co-relation queries the response was YES. [2024-10-11 20:04:50,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18225 conditions, 4006 events. 2255/4006 cut-off events. For 26048/26048 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23372 event pairs, 1570 based on Foata normal form. 12/4018 useless extension candidates. Maximal degree in co-relation 17963. Up to 3810 conditions per place. [2024-10-11 20:04:50,681 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 172 selfloop transitions, 65 changer transitions 0/241 dead transitions. [2024-10-11 20:04:50,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 241 transitions, 3142 flow [2024-10-11 20:04:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-11 20:04:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-10-11 20:04:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1187 transitions. [2024-10-11 20:04:50,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.471031746031746 [2024-10-11 20:04:50,683 INFO L175 Difference]: Start difference. First operand has 134 places, 205 transitions, 2356 flow. Second operand 45 states and 1187 transitions. [2024-10-11 20:04:50,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 241 transitions, 3142 flow [2024-10-11 20:04:50,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 241 transitions, 3048 flow, removed 47 selfloop flow, removed 0 redundant places. [2024-10-11 20:04:50,735 INFO L231 Difference]: Finished difference. Result has 190 places, 241 transitions, 2758 flow [2024-10-11 20:04:50,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2758, PETRI_PLACES=190, PETRI_TRANSITIONS=241} [2024-10-11 20:04:50,736 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-10-11 20:04:50,736 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 241 transitions, 2758 flow [2024-10-11 20:04:50,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 25.76923076923077) internal successors, (670), 26 states have internal predecessors, (670), 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) [2024-10-11 20:04:50,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:50,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:50,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (20)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:50,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:50,937 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:50,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1874002737, now seen corresponding path program 1 times [2024-10-11 20:04:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:50,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976252054] [2024-10-11 20:04:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:50,937 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 [2024-10-11 20:04:50,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:50,938 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:50,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (21)] Waiting until timeout for monitored process [2024-10-11 20:04:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:51,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 20:04:51,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:51,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:51,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:51,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976252054] [2024-10-11 20:04:51,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976252054] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:51,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:51,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-10-11 20:04:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126862633] [2024-10-11 20:04:51,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:51,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:04:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:51,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:04:51,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:04:51,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-10-11 20:04:51,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 241 transitions, 2758 flow. Second operand has 14 states, 14 states have (on average 24.714285714285715) internal successors, (346), 14 states have internal predecessors, (346), 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) [2024-10-11 20:04:51,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:51,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-10-11 20:04:51,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:54,411 INFO L124 PetriNetUnfolderBase]: 5279/9379 cut-off events. [2024-10-11 20:04:54,411 INFO L125 PetriNetUnfolderBase]: For 34400/34400 co-relation queries the response was YES. [2024-10-11 20:04:54,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36812 conditions, 9379 events. 5279/9379 cut-off events. For 34400/34400 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 65705 event pairs, 1047 based on Foata normal form. 45/9424 useless extension candidates. Maximal degree in co-relation 36697. Up to 1927 conditions per place. [2024-10-11 20:04:54,583 INFO L140 encePairwiseOnDemand]: 38/56 looper letters, 480 selfloop transitions, 203 changer transitions 51/736 dead transitions. [2024-10-11 20:04:54,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 736 transitions, 7204 flow [2024-10-11 20:04:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 20:04:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 20:04:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 887 transitions. [2024-10-11 20:04:54,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5866402116402116 [2024-10-11 20:04:54,585 INFO L175 Difference]: Start difference. First operand has 190 places, 241 transitions, 2758 flow. Second operand 27 states and 887 transitions. [2024-10-11 20:04:54,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 736 transitions, 7204 flow [2024-10-11 20:04:54,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 736 transitions, 7020 flow, removed 63 selfloop flow, removed 20 redundant places. [2024-10-11 20:04:54,735 INFO L231 Difference]: Finished difference. Result has 219 places, 397 transitions, 4772 flow [2024-10-11 20:04:54,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4772, PETRI_PLACES=219, PETRI_TRANSITIONS=397} [2024-10-11 20:04:54,735 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 165 predicate places. [2024-10-11 20:04:54,736 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 397 transitions, 4772 flow [2024-10-11 20:04:54,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.714285714285715) internal successors, (346), 14 states have internal predecessors, (346), 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) [2024-10-11 20:04:54,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:54,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:54,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (21)] Ended with exit code 0 [2024-10-11 20:04:54,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/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 [2024-10-11 20:04:54,936 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-10-11 20:04:54,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash 273317107, now seen corresponding path program 2 times [2024-10-11 20:04:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:54,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22097035] [2024-10-11 20:04:54,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:54,937 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 [2024-10-11 20:04:54,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:54,939 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/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) [2024-10-11 20:04:54,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (22)] Waiting until timeout for monitored process [2024-10-11 20:04:55,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:04:55,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:55,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:04:55,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:55,481 INFO L349 Elim1Store]: treesize reduction 164, result has 7.3 percent of original size [2024-10-11 20:04:55,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 99 [2024-10-11 20:04:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:55,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:58,023 INFO L349 Elim1Store]: treesize reduction 1015, result has 19.3 percent of original size [2024-10-11 20:04:58,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 24 new quantified variables, introduced 120 case distinctions, treesize of input 996 treesize of output 395