./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:42:42,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:42:42,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:42:43,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:42:43,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:42:43,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:42:43,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:42:43,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:42:43,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:42:43,023 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:42:43,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:42:43,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:42:43,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:42:43,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:42:43,025 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:42:43,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:42:43,026 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:42:43,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:42:43,026 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:42:43,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:42:43,027 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:42:43,030 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:42:43,031 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:42:43,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:42:43,031 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:42:43,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:42:43,031 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:42:43,032 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:42:43,032 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:42:43,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:42:43,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:42:43,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:42:43,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:42:43,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:43,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:42:43,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:42:43,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:42:43,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:42:43,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:42:43,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:42:43,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:42:43,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:42:43,036 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 [2024-10-13 12:42:43,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:42:43,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:42:43,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:42:43,336 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:42:43,337 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:42:43,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-13 12:42:44,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:42:44,872 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:42:44,872 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-13 12:42:44,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb649c24/d1d7e1bd189e43c6ace1f685ea10d02c/FLAG1d1ecf7df [2024-10-13 12:42:45,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb649c24/d1d7e1bd189e43c6ace1f685ea10d02c [2024-10-13 12:42:45,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:42:45,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:42:45,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:45,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:42:45,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:42:45,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:45" (1/1) ... [2024-10-13 12:42:45,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6d2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:45, skipping insertion in model container [2024-10-13 12:42:45,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:45" (1/1) ... [2024-10-13 12:42:45,278 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:42:45,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:45,529 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) [2024-10-13 12:42:45,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74574766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:45, skipping insertion in model container [2024-10-13 12:42:45,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:45,530 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:42:45,532 INFO L158 Benchmark]: Toolchain (without parser) took 286.96ms. Allocated memory is still 169.9MB. Free memory was 135.4MB in the beginning and 123.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 12:42:45,532 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:42:45,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.02ms. Allocated memory is still 169.9MB. Free memory was 135.4MB in the beginning and 123.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 12:42:45,535 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.02ms. Allocated memory is still 169.9MB. Free memory was 135.4MB in the beginning and 123.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 113]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:42:47,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:42:47,656 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:42:47,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:42:47,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:42:47,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:42:47,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:42:47,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:42:47,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:42:47,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:42:47,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:42:47,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:42:47,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:42:47,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:42:47,695 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:42:47,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:42:47,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:42:47,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:42:47,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:42:47,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:42:47,697 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:42:47,700 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:42:47,700 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:42:47,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:42:47,701 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:42:47,701 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:42:47,701 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:42:47,701 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:42:47,702 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:42:47,702 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:42:47,702 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:42:47,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:42:47,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:42:47,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:42:47,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:42:47,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:47,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:42:47,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:42:47,704 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:42:47,704 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:42:47,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:42:47,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:42:47,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:42:47,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:42:47,706 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:42:47,706 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 [2024-10-13 12:42:48,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:42:48,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:42:48,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:42:48,062 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:42:48,062 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:42:48,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-13 12:42:49,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:42:49,863 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:42:49,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-13 12:42:49,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3345d2d00/a79e90c66daf435680a2a157e6b1eda0/FLAG704a87ec0 [2024-10-13 12:42:49,891 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3345d2d00/a79e90c66daf435680a2a157e6b1eda0 [2024-10-13 12:42:49,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:42:49,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:42:49,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:49,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:42:49,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:42:49,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:49" (1/1) ... [2024-10-13 12:42:49,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8659ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:49, skipping insertion in model container [2024-10-13 12:42:49,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:49" (1/1) ... [2024-10-13 12:42:49,934 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:42:50,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:50,199 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:42:50,204 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:42:50,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:50,240 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:42:50,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:50,302 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:42:50,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50 WrapperNode [2024-10-13 12:42:50,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:50,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:42:50,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:42:50,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:42:50,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,323 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,363 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 190 [2024-10-13 12:42:50,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:42:50,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:42:50,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:42:50,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:42:50,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,382 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,407 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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]. [2024-10-13 12:42:50,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:42:50,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:42:50,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:42:50,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:42:50,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (1/1) ... [2024-10-13 12:42:50,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:50,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:50,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:42:50,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:42:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:42:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:42:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:42:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:42:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:42:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:42:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:42:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:42:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:42:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:42:50,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:42:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:42:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:42:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:42:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:42:50,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:42:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:42:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:42:50,527 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:42:50,652 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:42:50,654 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:42:51,150 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:42:51,151 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:42:51,501 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:42:51,503 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 12:42:51,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:51 BoogieIcfgContainer [2024-10-13 12:42:51,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:42:51,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:42:51,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:42:51,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:42:51,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:42:49" (1/3) ... [2024-10-13 12:42:51,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c1b756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:51, skipping insertion in model container [2024-10-13 12:42:51,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:50" (2/3) ... [2024-10-13 12:42:51,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c1b756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:51, skipping insertion in model container [2024-10-13 12:42:51,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:51" (3/3) ... [2024-10-13 12:42:51,514 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2024-10-13 12:42:51,531 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:42:51,532 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-13 12:42:51,532 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:42:51,594 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:42:51,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-10-13 12:42:51,658 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-10-13 12:42:51,659 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:42:51,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-13 12:42:51,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-10-13 12:42:51,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 43 transitions, 104 flow [2024-10-13 12:42:51,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:42:51,686 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;@cc95572, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:42:51,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-13 12:42:51,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:42:51,691 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:42:51,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:42:51,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:51,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:42:51,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:42:51,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:51,698 INFO L85 PathProgramCache]: Analyzing trace with hash 607647, now seen corresponding path program 1 times [2024-10-13 12:42:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:51,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783606872] [2024-10-13 12:42:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:51,718 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 [2024-10-13 12:42:51,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:51,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:51,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-13 12:42:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:51,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:42:51,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:51,886 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 [2024-10-13 12:42:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:51,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:42:51,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:51,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783606872] [2024-10-13 12:42:51,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783606872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:51,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:51,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:42:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146740309] [2024-10-13 12:42:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:51,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:42:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:42:51,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:42:51,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:42:51,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:51,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:51,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:42:51,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:52,459 INFO L124 PetriNetUnfolderBase]: 1316/1969 cut-off events. [2024-10-13 12:42:52,460 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-13 12:42:52,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3982 conditions, 1969 events. 1316/1969 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10408 event pairs, 1060 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 3676. Up to 1877 conditions per place. [2024-10-13 12:42:52,479 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 30 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-10-13 12:42:52,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 162 flow [2024-10-13 12:42:52,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:42:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:42:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-10-13 12:42:52,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-10-13 12:42:52,494 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 104 flow. Second operand 3 states and 70 transitions. [2024-10-13 12:42:52,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 162 flow [2024-10-13 12:42:52,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:42:52,506 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 90 flow [2024-10-13 12:42:52,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-10-13 12:42:52,512 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -7 predicate places. [2024-10-13 12:42:52,513 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 90 flow [2024-10-13 12:42:52,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:52,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:52,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:42:52,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-13 12:42:52,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:52,717 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:42:52,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:52,718 INFO L85 PathProgramCache]: Analyzing trace with hash 607648, now seen corresponding path program 1 times [2024-10-13 12:42:52,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:52,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133659296] [2024-10-13 12:42:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:52,719 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 [2024-10-13 12:42:52,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:52,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:52,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-13 12:42:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:52,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:42:52,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:52,797 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 [2024-10-13 12:42:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:52,879 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:42:52,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133659296] [2024-10-13 12:42:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133659296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:52,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:52,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:42:52,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095326111] [2024-10-13 12:42:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:52,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:42:52,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:52,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:42:52,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:42:52,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:42:52,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-13 12:42:52,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:52,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:42:52,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:53,420 INFO L124 PetriNetUnfolderBase]: 1317/1972 cut-off events. [2024-10-13 12:42:53,421 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 12:42:53,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 1972 events. 1317/1972 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10372 event pairs, 1060 based on Foata normal form. 0/1375 useless extension candidates. Maximal degree in co-relation 3882. Up to 1882 conditions per place. [2024-10-13 12:42:53,433 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-10-13 12:42:53,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 170 flow [2024-10-13 12:42:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:42:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:42:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-10-13 12:42:53,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4521276595744681 [2024-10-13 12:42:53,436 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 90 flow. Second operand 4 states and 85 transitions. [2024-10-13 12:42:53,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 170 flow [2024-10-13 12:42:53,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:42:53,438 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 113 flow [2024-10-13 12:42:53,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-10-13 12:42:53,439 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-10-13 12:42:53,439 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 113 flow [2024-10-13 12:42:53,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-13 12:42:53,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:53,440 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:42:53,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-13 12:42:53,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:53,641 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:42:53,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:53,641 INFO L85 PathProgramCache]: Analyzing trace with hash 583968283, now seen corresponding path program 1 times [2024-10-13 12:42:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:53,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795173129] [2024-10-13 12:42:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:53,642 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 [2024-10-13 12:42:53,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:53,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:53,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-13 12:42:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:53,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:42:53,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:53,720 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 [2024-10-13 12:42:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:53,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:54,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:54,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795173129] [2024-10-13 12:42:54,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795173129] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:54,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:42:54,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:42:54,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562699057] [2024-10-13 12:42:54,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:54,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:42:54,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:54,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:42:54,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:42:54,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:42:54,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 113 flow. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 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) [2024-10-13 12:42:54,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:54,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:42:54,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:55,008 INFO L124 PetriNetUnfolderBase]: 1320/1981 cut-off events. [2024-10-13 12:42:55,008 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 12:42:55,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3941 conditions, 1981 events. 1320/1981 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10491 event pairs, 1060 based on Foata normal form. 0/1380 useless extension candidates. Maximal degree in co-relation 3889. Up to 1885 conditions per place. [2024-10-13 12:42:55,024 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-10-13 12:42:55,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 239 flow [2024-10-13 12:42:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:42:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:42:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-10-13 12:42:55,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3574468085106383 [2024-10-13 12:42:55,027 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 113 flow. Second operand 10 states and 168 transitions. [2024-10-13 12:42:55,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 239 flow [2024-10-13 12:42:55,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:42:55,029 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 190 flow [2024-10-13 12:42:55,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=190, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-10-13 12:42:55,030 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-10-13 12:42:55,031 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 190 flow [2024-10-13 12:42:55,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 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) [2024-10-13 12:42:55,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:55,031 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:42:55,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-13 12:42:55,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:55,234 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:42:55,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:55,235 INFO L85 PathProgramCache]: Analyzing trace with hash 925181097, now seen corresponding path program 1 times [2024-10-13 12:42:55,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:55,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045195622] [2024-10-13 12:42:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:55,236 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 [2024-10-13 12:42:55,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:55,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:55,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-13 12:42:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:55,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:42:55,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:55,296 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 [2024-10-13 12:42:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:55,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:42:55,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045195622] [2024-10-13 12:42:55,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045195622] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:55,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:55,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:42:55,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802219688] [2024-10-13 12:42:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:55,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:42:55,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:42:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:42:55,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:42:55,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-10-13 12:42:55,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:55,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:42:55,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:55,560 INFO L124 PetriNetUnfolderBase]: 796/1215 cut-off events. [2024-10-13 12:42:55,560 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-13 12:42:55,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1215 events. 796/1215 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5751 event pairs, 608 based on Foata normal form. 0/969 useless extension candidates. Maximal degree in co-relation 2409. Up to 1138 conditions per place. [2024-10-13 12:42:55,568 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 35 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2024-10-13 12:42:55,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 266 flow [2024-10-13 12:42:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:42:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:42:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-10-13 12:42:55,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-10-13 12:42:55,569 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 190 flow. Second operand 4 states and 80 transitions. [2024-10-13 12:42:55,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 266 flow [2024-10-13 12:42:55,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 236 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-13 12:42:55,572 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 166 flow [2024-10-13 12:42:55,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-10-13 12:42:55,573 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-10-13 12:42:55,573 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 166 flow [2024-10-13 12:42:55,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-10-13 12:42:55,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:55,573 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:42:55,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-13 12:42:55,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:55,776 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:42:55,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash 925181098, now seen corresponding path program 1 times [2024-10-13 12:42:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95483092] [2024-10-13 12:42:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:55,777 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 [2024-10-13 12:42:55,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:55,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:55,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-13 12:42:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:55,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:42:55,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:55,869 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 [2024-10-13 12:42:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:56,018 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:42:56,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:56,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95483092] [2024-10-13 12:42:56,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95483092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:56,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:56,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:42:56,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038857405] [2024-10-13 12:42:56,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:56,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:42:56,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:56,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:42:56,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:42:56,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:42:56,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-10-13 12:42:56,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:56,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:42:56,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:56,625 INFO L124 PetriNetUnfolderBase]: 1582/2433 cut-off events. [2024-10-13 12:42:56,625 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-13 12:42:56,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 2433 events. 1582/2433 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12832 event pairs, 614 based on Foata normal form. 0/1975 useless extension candidates. Maximal degree in co-relation 4739. Up to 1409 conditions per place. [2024-10-13 12:42:56,662 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 65 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-10-13 12:42:56,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 394 flow [2024-10-13 12:42:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:42:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:42:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-10-13 12:42:56,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-10-13 12:42:56,664 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 166 flow. Second operand 6 states and 139 transitions. [2024-10-13 12:42:56,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 394 flow [2024-10-13 12:42:56,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 387 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:42:56,668 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 216 flow [2024-10-13 12:42:56,668 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-10-13 12:42:56,669 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-10-13 12:42:56,669 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 216 flow [2024-10-13 12:42:56,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-10-13 12:42:56,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:56,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:56,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-13 12:42:56,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:56,870 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:42:56,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash 24055492, now seen corresponding path program 1 times [2024-10-13 12:42:56,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:56,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972014192] [2024-10-13 12:42:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:56,872 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 [2024-10-13 12:42:56,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:56,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:56,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-13 12:42:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:56,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 12:42:56,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:56,963 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 [2024-10-13 12:42:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:57,207 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:42:57,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:57,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972014192] [2024-10-13 12:42:57,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972014192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:57,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:57,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:42:57,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572277902] [2024-10-13 12:42:57,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:57,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:42:57,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:57,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:42:57,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:42:57,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:42:57,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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) [2024-10-13 12:42:57,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:57,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:42:57,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:58,153 INFO L124 PetriNetUnfolderBase]: 3045/4541 cut-off events. [2024-10-13 12:42:58,154 INFO L125 PetriNetUnfolderBase]: For 1511/1672 co-relation queries the response was YES. [2024-10-13 12:42:58,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10625 conditions, 4541 events. 3045/4541 cut-off events. For 1511/1672 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 24784 event pairs, 1261 based on Foata normal form. 193/4257 useless extension candidates. Maximal degree in co-relation 10591. Up to 2636 conditions per place. [2024-10-13 12:42:58,185 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 73 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2024-10-13 12:42:58,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 528 flow [2024-10-13 12:42:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:42:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:42:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-10-13 12:42:58,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-10-13 12:42:58,188 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 216 flow. Second operand 6 states and 137 transitions. [2024-10-13 12:42:58,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 528 flow [2024-10-13 12:42:58,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 507 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:42:58,200 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 275 flow [2024-10-13 12:42:58,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-10-13 12:42:58,201 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2024-10-13 12:42:58,202 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 275 flow [2024-10-13 12:42:58,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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) [2024-10-13 12:42:58,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:58,202 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:58,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-13 12:42:58,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:58,403 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:42:58,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash 577988239, now seen corresponding path program 1 times [2024-10-13 12:42:58,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:58,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943913415] [2024-10-13 12:42:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:58,404 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 [2024-10-13 12:42:58,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:58,407 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:58,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-13 12:42:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:58,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 12:42:58,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:58,494 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 [2024-10-13 12:42:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:58,626 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:42:58,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:58,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943913415] [2024-10-13 12:42:58,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943913415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:58,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:58,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:42:58,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240785281] [2024-10-13 12:42:58,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:58,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:58,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:58,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:58,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:58,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-13 12:42:58,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2024-10-13 12:42:58,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:58,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-13 12:42:58,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:59,444 INFO L124 PetriNetUnfolderBase]: 3157/4667 cut-off events. [2024-10-13 12:42:59,444 INFO L125 PetriNetUnfolderBase]: For 4247/4630 co-relation queries the response was YES. [2024-10-13 12:42:59,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13006 conditions, 4667 events. 3157/4667 cut-off events. For 4247/4630 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 25315 event pairs, 2080 based on Foata normal form. 389/4805 useless extension candidates. Maximal degree in co-relation 12970. Up to 4057 conditions per place. [2024-10-13 12:42:59,478 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 73 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2024-10-13 12:42:59,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 509 flow [2024-10-13 12:42:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:42:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:42:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-13 12:42:59,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.548936170212766 [2024-10-13 12:42:59,480 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 275 flow. Second operand 5 states and 129 transitions. [2024-10-13 12:42:59,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 509 flow [2024-10-13 12:42:59,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:42:59,485 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 317 flow [2024-10-13 12:42:59,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-10-13 12:42:59,486 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2024-10-13 12:42:59,487 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 317 flow [2024-10-13 12:42:59,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2024-10-13 12:42:59,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:59,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:59,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-13 12:42:59,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:59,688 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:42:59,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:59,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1634798638, now seen corresponding path program 1 times [2024-10-13 12:42:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:59,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27003467] [2024-10-13 12:42:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:59,689 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 [2024-10-13 12:42:59,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:59,692 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:59,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-13 12:42:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:59,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:42:59,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:59,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:42:59,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:59,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27003467] [2024-10-13 12:42:59,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27003467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:59,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:59,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:42:59,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330034115] [2024-10-13 12:42:59,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:59,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:59,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:59,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:42:59,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:59,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:59,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:42:59,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:00,572 INFO L124 PetriNetUnfolderBase]: 3545/5136 cut-off events. [2024-10-13 12:43:00,572 INFO L125 PetriNetUnfolderBase]: For 8549/8988 co-relation queries the response was YES. [2024-10-13 12:43:00,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16414 conditions, 5136 events. 3545/5136 cut-off events. For 8549/8988 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 26815 event pairs, 2433 based on Foata normal form. 324/5072 useless extension candidates. Maximal degree in co-relation 16376. Up to 4618 conditions per place. [2024-10-13 12:43:00,618 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 70 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2024-10-13 12:43:00,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 84 transitions, 541 flow [2024-10-13 12:43:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:43:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:43:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-10-13 12:43:00,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-10-13 12:43:00,621 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 317 flow. Second operand 5 states and 117 transitions. [2024-10-13 12:43:00,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 84 transitions, 541 flow [2024-10-13 12:43:00,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:43:00,629 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 337 flow [2024-10-13 12:43:00,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-10-13 12:43:00,631 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2024-10-13 12:43:00,632 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 337 flow [2024-10-13 12:43:00,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:43:00,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:00,633 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-13 12:43:00,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-10-13 12:43:00,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:00,834 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:43:00,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash 762599180, now seen corresponding path program 2 times [2024-10-13 12:43:00,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:00,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345287510] [2024-10-13 12:43:00,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:43:00,835 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 [2024-10-13 12:43:00,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:00,837 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:00,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-13 12:43:00,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:43:00,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:43:00,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:43:00,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:00,933 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 [2024-10-13 12:43:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:01,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:01,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:01,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345287510] [2024-10-13 12:43:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345287510] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:01,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:43:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939964780] [2024-10-13 12:43:01,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:01,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:43:01,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:43:01,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:43:01,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:43:01,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 337 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2024-10-13 12:43:01,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:01,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:43:01,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:04,664 INFO L124 PetriNetUnfolderBase]: 3028/4614 cut-off events. [2024-10-13 12:43:04,664 INFO L125 PetriNetUnfolderBase]: For 8268/8674 co-relation queries the response was YES. [2024-10-13 12:43:04,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15029 conditions, 4614 events. 3028/4614 cut-off events. For 8268/8674 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 25604 event pairs, 2085 based on Foata normal form. 272/4652 useless extension candidates. Maximal degree in co-relation 14916. Up to 4095 conditions per place. [2024-10-13 12:43:04,701 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 43 selfloop transitions, 31 changer transitions 0/83 dead transitions. [2024-10-13 12:43:04,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 581 flow [2024-10-13 12:43:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:43:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:43:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 330 transitions. [2024-10-13 12:43:04,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3191489361702128 [2024-10-13 12:43:04,706 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 337 flow. Second operand 22 states and 330 transitions. [2024-10-13 12:43:04,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 581 flow [2024-10-13 12:43:04,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:43:04,720 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 520 flow [2024-10-13 12:43:04,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=520, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2024-10-13 12:43:04,721 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 46 predicate places. [2024-10-13 12:43:04,722 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 520 flow [2024-10-13 12:43:04,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2024-10-13 12:43:04,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:04,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:04,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-13 12:43:04,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:04,923 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:43:04,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash -519029933, now seen corresponding path program 1 times [2024-10-13 12:43:04,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:04,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99584510] [2024-10-13 12:43:04,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:04,924 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 [2024-10-13 12:43:04,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:04,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:04,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-13 12:43:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:04,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 12:43:04,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:05,007 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 [2024-10-13 12:43:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:05,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:06,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99584510] [2024-10-13 12:43:06,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99584510] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:06,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:06,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:43:06,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084786026] [2024-10-13 12:43:06,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:06,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:43:06,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:43:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:43:06,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-10-13 12:43:06,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 520 flow. Second operand has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 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) [2024-10-13 12:43:06,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:06,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-10-13 12:43:06,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:10,840 INFO L124 PetriNetUnfolderBase]: 10996/15841 cut-off events. [2024-10-13 12:43:10,840 INFO L125 PetriNetUnfolderBase]: For 26597/27640 co-relation queries the response was YES. [2024-10-13 12:43:10,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52787 conditions, 15841 events. 10996/15841 cut-off events. For 26597/27640 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 95571 event pairs, 5041 based on Foata normal form. 1074/15679 useless extension candidates. Maximal degree in co-relation 52728. Up to 3984 conditions per place. [2024-10-13 12:43:10,979 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 228 selfloop transitions, 43 changer transitions 0/279 dead transitions. [2024-10-13 12:43:10,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 279 transitions, 2038 flow [2024-10-13 12:43:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 12:43:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 12:43:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 362 transitions. [2024-10-13 12:43:10,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2024-10-13 12:43:10,982 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 520 flow. Second operand 16 states and 362 transitions. [2024-10-13 12:43:10,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 279 transitions, 2038 flow [2024-10-13 12:43:11,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 279 transitions, 1958 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-13 12:43:11,063 INFO L231 Difference]: Finished difference. Result has 107 places, 99 transitions, 717 flow [2024-10-13 12:43:11,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=717, PETRI_PLACES=107, PETRI_TRANSITIONS=99} [2024-10-13 12:43:11,064 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 58 predicate places. [2024-10-13 12:43:11,064 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 99 transitions, 717 flow [2024-10-13 12:43:11,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 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) [2024-10-13 12:43:11,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:11,065 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:11,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-13 12:43:11,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:11,266 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:43:11,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1575840332, now seen corresponding path program 1 times [2024-10-13 12:43:11,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:11,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702549208] [2024-10-13 12:43:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:11,267 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 [2024-10-13 12:43:11,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:11,268 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:11,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-13 12:43:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:11,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 12:43:11,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:11,357 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 [2024-10-13 12:43:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:11,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:12,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:12,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702549208] [2024-10-13 12:43:12,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702549208] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:12,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:12,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:43:12,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845195230] [2024-10-13 12:43:12,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:12,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:43:12,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:43:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:43:12,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:43:12,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 717 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2024-10-13 12:43:12,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:12,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:43:12,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:16,583 INFO L124 PetriNetUnfolderBase]: 18644/27433 cut-off events. [2024-10-13 12:43:16,583 INFO L125 PetriNetUnfolderBase]: For 71097/77089 co-relation queries the response was YES. [2024-10-13 12:43:16,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100914 conditions, 27433 events. 18644/27433 cut-off events. For 71097/77089 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 175245 event pairs, 3387 based on Foata normal form. 2848/29864 useless extension candidates. Maximal degree in co-relation 100851. Up to 7251 conditions per place. [2024-10-13 12:43:17,063 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 332 selfloop transitions, 36 changer transitions 2/380 dead transitions. [2024-10-13 12:43:17,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 380 transitions, 3381 flow [2024-10-13 12:43:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 12:43:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 12:43:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 344 transitions. [2024-10-13 12:43:17,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.563011456628478 [2024-10-13 12:43:17,068 INFO L175 Difference]: Start difference. First operand has 107 places, 99 transitions, 717 flow. Second operand 13 states and 344 transitions. [2024-10-13 12:43:17,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 380 transitions, 3381 flow [2024-10-13 12:43:17,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 380 transitions, 3240 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-10-13 12:43:17,283 INFO L231 Difference]: Finished difference. Result has 116 places, 110 transitions, 854 flow [2024-10-13 12:43:17,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=854, PETRI_PLACES=116, PETRI_TRANSITIONS=110} [2024-10-13 12:43:17,283 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 67 predicate places. [2024-10-13 12:43:17,284 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 854 flow [2024-10-13 12:43:17,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2024-10-13 12:43:17,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:17,284 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:17,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-10-13 12:43:17,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:17,485 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:43:17,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1749389426, now seen corresponding path program 1 times [2024-10-13 12:43:17,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:17,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772752765] [2024-10-13 12:43:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:17,486 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 [2024-10-13 12:43:17,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:17,487 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:17,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-13 12:43:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:17,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:43:17,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:17,587 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 [2024-10-13 12:43:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:17,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:18,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:18,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772752765] [2024-10-13 12:43:18,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772752765] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:18,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:18,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:43:18,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707135704] [2024-10-13 12:43:18,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:18,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:43:18,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:43:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:43:18,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:43:18,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 110 transitions, 854 flow. Second operand has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 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) [2024-10-13 12:43:18,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:18,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:43:18,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:25,915 INFO L124 PetriNetUnfolderBase]: 32946/48236 cut-off events. [2024-10-13 12:43:25,916 INFO L125 PetriNetUnfolderBase]: For 168468/179741 co-relation queries the response was YES. [2024-10-13 12:43:26,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192747 conditions, 48236 events. 32946/48236 cut-off events. For 168468/179741 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 321542 event pairs, 6357 based on Foata normal form. 5615/52579 useless extension candidates. Maximal degree in co-relation 192679. Up to 13796 conditions per place. [2024-10-13 12:43:26,698 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 369 selfloop transitions, 37 changer transitions 4/424 dead transitions. [2024-10-13 12:43:26,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 424 transitions, 4096 flow [2024-10-13 12:43:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 12:43:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 12:43:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 332 transitions. [2024-10-13 12:43:26,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5433715220949263 [2024-10-13 12:43:26,701 INFO L175 Difference]: Start difference. First operand has 116 places, 110 transitions, 854 flow. Second operand 13 states and 332 transitions. [2024-10-13 12:43:26,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 424 transitions, 4096 flow [2024-10-13 12:43:26,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 424 transitions, 3855 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-10-13 12:43:27,000 INFO L231 Difference]: Finished difference. Result has 128 places, 121 transitions, 976 flow [2024-10-13 12:43:27,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=976, PETRI_PLACES=128, PETRI_TRANSITIONS=121} [2024-10-13 12:43:27,001 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 79 predicate places. [2024-10-13 12:43:27,001 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 121 transitions, 976 flow [2024-10-13 12:43:27,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 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) [2024-10-13 12:43:27,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:27,001 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:27,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-13 12:43:27,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:27,202 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-13 12:43:27,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:27,202 INFO L85 PathProgramCache]: Analyzing trace with hash 348062749, now seen corresponding path program 1 times [2024-10-13 12:43:27,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:27,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902340383] [2024-10-13 12:43:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:27,203 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 [2024-10-13 12:43:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:27,206 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:27,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-13 12:43:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:27,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 12:43:27,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:27,293 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 [2024-10-13 12:43:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:27,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:29,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:29,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902340383] [2024-10-13 12:43:29,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902340383] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:29,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:29,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-10-13 12:43:29,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142771740] [2024-10-13 12:43:29,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:29,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:43:29,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:29,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:43:29,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:43:29,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:43:29,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 121 transitions, 976 flow. Second operand has 18 states, 18 states have (on average 13.88888888888889) internal successors, (250), 18 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) [2024-10-13 12:43:29,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:29,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:43:29,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand