./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/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 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/chl-name-comparator-subst.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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:15:53,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:15:53,422 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:15:53,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:15:53,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:15:53,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:15:53,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:15:53,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:15:53,455 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:15:53,456 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:15:53,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:15:53,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:15:53,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:15:53,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:15:53,459 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:15:53,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:15:53,460 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:15:53,460 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:15:53,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:15:53,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:15:53,461 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:15:53,461 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:15:53,463 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:15:53,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:15:53,464 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:15:53,464 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:15:53,464 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:15:53,464 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:15:53,465 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:15:53,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:15:53,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:15:53,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:15:53,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:15:53,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:15:53,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:15:53,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:15:53,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:15:53,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:15:53,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:15:53,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:15:53,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:15:53,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:15:53,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-10-24 19:15:53,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:15:53,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:15:53,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:15:53,710 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:15:53,711 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:15:53,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-24 19:15:55,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:15:55,195 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:15:55,195 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-24 19:15:55,204 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c6920d7/71cfd17cc3744e47ba7c5a113e2f26e9/FLAGd1a7f736e [2024-10-24 19:15:55,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c6920d7/71cfd17cc3744e47ba7c5a113e2f26e9 [2024-10-24 19:15:55,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:15:55,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:15:55,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:15:55,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:15:55,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:15:55,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:15:55" (1/1) ... [2024-10-24 19:15:55,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e356ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:55, skipping insertion in model container [2024-10-24 19:15:55,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:15:55" (1/1) ... [2024-10-24 19:15:55,257 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:15:55,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:15:55,502 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) [2024-10-24 19:15:55,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@526dbd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:55, skipping insertion in model container [2024-10-24 19:15:55,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:15:55,504 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:15:55,506 INFO L158 Benchmark]: Toolchain (without parser) took 282.28ms. Allocated memory is still 155.2MB. Free memory was 81.4MB in the beginning and 69.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:15:55,506 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 155.2MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:15:55,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.11ms. Allocated memory is still 155.2MB. Free memory was 81.2MB in the beginning and 69.2MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:15:55,508 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 155.2MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.11ms. Allocated memory is still 155.2MB. Free memory was 81.2MB in the beginning and 69.2MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 151]: 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/chl-name-comparator-subst.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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:15:57,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:15:57,436 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:15:57,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:15:57,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:15:57,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:15:57,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:15:57,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:15:57,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:15:57,478 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:15:57,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:15:57,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:15:57,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:15:57,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:15:57,481 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:15:57,481 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:15:57,482 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:15:57,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:15:57,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:15:57,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:15:57,485 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:15:57,485 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:15:57,486 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:15:57,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:15:57,486 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:15:57,486 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:15:57,486 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:15:57,486 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:15:57,487 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:15:57,487 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:15:57,487 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:15:57,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:15:57,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:15:57,487 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:15:57,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:15:57,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:15:57,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:15:57,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:15:57,488 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:15:57,488 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:15:57,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:15:57,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:15:57,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:15:57,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:15:57,491 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:15:57,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-10-24 19:15:57,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:15:57,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:15:57,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:15:57,831 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:15:57,831 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:15:57,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-24 19:15:59,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:15:59,570 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:15:59,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-24 19:15:59,582 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39b477f3/d47251eb32b444b8878dad34f2c7b25f/FLAG3c07d859d [2024-10-24 19:15:59,594 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39b477f3/d47251eb32b444b8878dad34f2c7b25f [2024-10-24 19:15:59,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:15:59,597 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:15:59,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:15:59,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:15:59,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:15:59,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:15:59,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcb7fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59, skipping insertion in model container [2024-10-24 19:15:59,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:15:59,629 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:15:59,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:15:59,842 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:15:59,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:15:59,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:15:59,897 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:15:59,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:15:59,950 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:15:59,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59 WrapperNode [2024-10-24 19:15:59,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:15:59,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:15:59,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:15:59,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:15:59,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:15:59,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:15:59,997 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 287 [2024-10-24 19:16:00,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:16:00,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:16:00,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:16:00,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:16:00,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,044 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]. [2024-10-24 19:16:00,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:16:00,061 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:16:00,061 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:16:00,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:16:00,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (1/1) ... [2024-10-24 19:16:00,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:16:00,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:16:00,090 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) [2024-10-24 19:16:00,095 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 [2024-10-24 19:16:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:16:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:16:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:16:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:16:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:16:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:16:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:16:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:16:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:16:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 19:16:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 19:16:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:16:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:16:00,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:16:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:16:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:16:00,137 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:16:00,247 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:16:00,249 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:16:00,738 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:16:00,742 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:16:01,062 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:16:01,062 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 19:16:01,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:16:01 BoogieIcfgContainer [2024-10-24 19:16:01,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:16:01,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:16:01,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:16:01,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:16:01,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:15:59" (1/3) ... [2024-10-24 19:16:01,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368c9851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:16:01, skipping insertion in model container [2024-10-24 19:16:01,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:15:59" (2/3) ... [2024-10-24 19:16:01,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368c9851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:16:01, skipping insertion in model container [2024-10-24 19:16:01,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:16:01" (3/3) ... [2024-10-24 19:16:01,068 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-10-24 19:16:01,081 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:16:01,082 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-24 19:16:01,082 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:16:01,134 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 19:16:01,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 121 flow [2024-10-24 19:16:01,179 INFO L124 PetriNetUnfolderBase]: 7/47 cut-off events. [2024-10-24 19:16:01,179 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 19:16:01,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 7/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-24 19:16:01,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 121 flow [2024-10-24 19:16:01,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 46 transitions, 110 flow [2024-10-24 19:16:01,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:16:01,195 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;@3ba25eae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:16:01,195 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-24 19:16:01,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:16:01,198 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:16:01,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:16:01,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:01,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:16:01,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:01,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:01,203 INFO L85 PathProgramCache]: Analyzing trace with hash 888093, now seen corresponding path program 1 times [2024-10-24 19:16:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:01,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131015066] [2024-10-24 19:16:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:01,212 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 [2024-10-24 19:16:01,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:01,215 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) [2024-10-24 19:16:01,223 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 [2024-10-24 19:16:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:01,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:16:01,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:01,333 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 [2024-10-24 19:16:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:16:01,344 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:16:01,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:01,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131015066] [2024-10-24 19:16:01,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131015066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:16:01,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:16:01,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:16:01,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63311421] [2024-10-24 19:16:01,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:16:01,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:16:01,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:16:01,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:16:01,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:01,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 110 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) [2024-10-24 19:16:01,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:01,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:01,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:01,764 INFO L124 PetriNetUnfolderBase]: 1316/2067 cut-off events. [2024-10-24 19:16:01,765 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-10-24 19:16:01,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4080 conditions, 2067 events. 1316/2067 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9537 event pairs, 1060 based on Foata normal form. 1/1719 useless extension candidates. Maximal degree in co-relation 3774. Up to 1877 conditions per place. [2024-10-24 19:16:01,780 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 30 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-10-24 19:16:01,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 162 flow [2024-10-24 19:16:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:16:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:16:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-24 19:16:01,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4866666666666667 [2024-10-24 19:16:01,793 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 110 flow. Second operand 3 states and 73 transitions. [2024-10-24 19:16:01,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 162 flow [2024-10-24 19:16:01,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 19:16:01,800 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 90 flow [2024-10-24 19:16:01,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, 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} [2024-10-24 19:16:01,806 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -7 predicate places. [2024-10-24 19:16:01,807 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 90 flow [2024-10-24 19:16:01,807 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) [2024-10-24 19:16:01,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:01,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:16:01,810 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 (2)] Forceful destruction successful, exit code 0 [2024-10-24 19:16:02,009 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 [2024-10-24 19:16:02,011 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:02,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:02,012 INFO L85 PathProgramCache]: Analyzing trace with hash 888094, now seen corresponding path program 1 times [2024-10-24 19:16:02,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:02,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091905528] [2024-10-24 19:16:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:02,013 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 [2024-10-24 19:16:02,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:02,019 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) [2024-10-24 19:16:02,020 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 [2024-10-24 19:16:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:02,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:16:02,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:02,113 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 5 [2024-10-24 19:16:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:16:02,141 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:16:02,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091905528] [2024-10-24 19:16:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091905528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:16:02,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:16:02,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:16:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856509190] [2024-10-24 19:16:02,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:16:02,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:16:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:16:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:16:02,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:02,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 90 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) [2024-10-24 19:16:02,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:02,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:02,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:02,448 INFO L124 PetriNetUnfolderBase]: 1317/2070 cut-off events. [2024-10-24 19:16:02,449 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-24 19:16:02,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4002 conditions, 2070 events. 1317/2070 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9557 event pairs, 1060 based on Foata normal form. 0/1721 useless extension candidates. Maximal degree in co-relation 3980. Up to 1882 conditions per place. [2024-10-24 19:16:02,457 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 33 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-10-24 19:16:02,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 170 flow [2024-10-24 19:16:02,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:16:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:16:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-24 19:16:02,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4866666666666667 [2024-10-24 19:16:02,460 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 90 flow. Second operand 3 states and 73 transitions. [2024-10-24 19:16:02,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 170 flow [2024-10-24 19:16:02,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:16:02,462 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 105 flow [2024-10-24 19:16:02,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, 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=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2024-10-24 19:16:02,464 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2024-10-24 19:16:02,464 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 105 flow [2024-10-24 19:16:02,466 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) [2024-10-24 19:16:02,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:02,466 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:16:02,473 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 (3)] Forceful destruction successful, exit code 0 [2024-10-24 19:16:02,667 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 [2024-10-24 19:16:02,668 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:02,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash 853486333, now seen corresponding path program 1 times [2024-10-24 19:16:02,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:02,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222015397] [2024-10-24 19:16:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:02,669 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 [2024-10-24 19:16:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:02,672 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) [2024-10-24 19:16:02,673 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 [2024-10-24 19:16:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:02,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:16:02,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:02,731 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 5 [2024-10-24 19:16:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:16:02,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:16:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:16:02,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:02,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222015397] [2024-10-24 19:16:02,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222015397] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:16:02,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:16:02,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2024-10-24 19:16:02,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540942162] [2024-10-24 19:16:02,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:16:02,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:16:02,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:02,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:16:02,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:16:03,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:03,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-10-24 19:16:03,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:03,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:03,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:03,527 INFO L124 PetriNetUnfolderBase]: 1319/2076 cut-off events. [2024-10-24 19:16:03,528 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-24 19:16:03,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4024 conditions, 2076 events. 1319/2076 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9597 event pairs, 1060 based on Foata normal form. 0/1727 useless extension candidates. Maximal degree in co-relation 3980. Up to 1884 conditions per place. [2024-10-24 19:16:03,540 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 35 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2024-10-24 19:16:03,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 211 flow [2024-10-24 19:16:03,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:16:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:16:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-24 19:16:03,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.416 [2024-10-24 19:16:03,542 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 105 flow. Second operand 5 states and 104 transitions. [2024-10-24 19:16:03,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 211 flow [2024-10-24 19:16:03,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:16:03,544 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 146 flow [2024-10-24 19:16:03,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-10-24 19:16:03,545 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2024-10-24 19:16:03,545 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 146 flow [2024-10-24 19:16:03,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-10-24 19:16:03,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:03,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:03,554 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 [2024-10-24 19:16:03,746 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 [2024-10-24 19:16:03,747 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:03,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash -58133287, now seen corresponding path program 1 times [2024-10-24 19:16:03,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:03,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085367640] [2024-10-24 19:16:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:03,748 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 [2024-10-24 19:16:03,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:03,753 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) [2024-10-24 19:16:03,753 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 [2024-10-24 19:16:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:03,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:16:03,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:16:03,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:16:03,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085367640] [2024-10-24 19:16:03,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085367640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:16:03,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:16:03,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:16:03,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424557714] [2024-10-24 19:16:03,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:16:03,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:16:03,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:16:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:16:03,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-10-24 19:16:03,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-24 19:16:03,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:03,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-10-24 19:16:03,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:04,300 INFO L124 PetriNetUnfolderBase]: 1318/2075 cut-off events. [2024-10-24 19:16:04,300 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-24 19:16:04,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 2075 events. 1318/2075 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9548 event pairs, 1060 based on Foata normal form. 1/1728 useless extension candidates. Maximal degree in co-relation 3997. Up to 1886 conditions per place. [2024-10-24 19:16:04,309 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 36 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-10-24 19:16:04,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 218 flow [2024-10-24 19:16:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:16:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:16:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-10-24 19:16:04,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-10-24 19:16:04,311 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 146 flow. Second operand 3 states and 74 transitions. [2024-10-24 19:16:04,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 218 flow [2024-10-24 19:16:04,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 208 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-24 19:16:04,313 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 134 flow [2024-10-24 19:16:04,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-24 19:16:04,314 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-10-24 19:16:04,314 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 134 flow [2024-10-24 19:16:04,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-24 19:16:04,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:04,315 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1] [2024-10-24 19:16:04,321 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 [2024-10-24 19:16:04,517 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 [2024-10-24 19:16:04,518 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:04,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:04,519 INFO L85 PathProgramCache]: Analyzing trace with hash 180511611, now seen corresponding path program 2 times [2024-10-24 19:16:04,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:04,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592718734] [2024-10-24 19:16:04,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:16:04,519 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 [2024-10-24 19:16:04,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:04,522 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) [2024-10-24 19:16:04,526 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 [2024-10-24 19:16:04,647 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:16:04,647 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:16:04,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:16:04,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:04,696 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 5 [2024-10-24 19:16:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:16:04,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:16:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:16:05,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:05,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592718734] [2024-10-24 19:16:05,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592718734] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:16:05,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:16:05,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-24 19:16:05,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333296982] [2024-10-24 19:16:05,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:16:05,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:16:05,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:16:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:16:05,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:05,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 134 flow. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 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) [2024-10-24 19:16:05,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:05,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:05,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:06,119 INFO L124 PetriNetUnfolderBase]: 1315/2070 cut-off events. [2024-10-24 19:16:06,120 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-24 19:16:06,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 2070 events. 1315/2070 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9528 event pairs, 1060 based on Foata normal form. 3/1725 useless extension candidates. Maximal degree in co-relation 3996. Up to 1877 conditions per place. [2024-10-24 19:16:06,130 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 31 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2024-10-24 19:16:06,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 186 flow [2024-10-24 19:16:06,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:16:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:16:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-10-24 19:16:06,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-10-24 19:16:06,135 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 134 flow. Second operand 6 states and 111 transitions. [2024-10-24 19:16:06,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 186 flow [2024-10-24 19:16:06,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 174 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-24 19:16:06,137 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 112 flow [2024-10-24 19:16:06,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-10-24 19:16:06,138 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-10-24 19:16:06,138 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 112 flow [2024-10-24 19:16:06,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 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) [2024-10-24 19:16:06,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:06,139 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:06,142 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 (6)] Forceful destruction successful, exit code 0 [2024-10-24 19:16:06,340 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 [2024-10-24 19:16:06,341 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:06,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:06,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1510036662, now seen corresponding path program 1 times [2024-10-24 19:16:06,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:06,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579736619] [2024-10-24 19:16:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:06,347 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 [2024-10-24 19:16:06,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:06,351 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) [2024-10-24 19:16:06,352 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 [2024-10-24 19:16:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:06,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:16:06,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:06,435 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 5 [2024-10-24 19:16:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:06,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:16:06,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579736619] [2024-10-24 19:16:06,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579736619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:16:06,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:16:06,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:16:06,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830073394] [2024-10-24 19:16:06,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:16:06,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:16:06,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:06,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:16:06,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:16:06,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:06,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-10-24 19:16:06,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:06,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:06,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:07,039 INFO L124 PetriNetUnfolderBase]: 2629/4063 cut-off events. [2024-10-24 19:16:07,040 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-24 19:16:07,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7924 conditions, 4063 events. 2629/4063 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 21205 event pairs, 1240 based on Foata normal form. 0/3374 useless extension candidates. Maximal degree in co-relation 7889. Up to 2168 conditions per place. [2024-10-24 19:16:07,081 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 57 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-10-24 19:16:07,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 291 flow [2024-10-24 19:16:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:16:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:16:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-24 19:16:07,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-10-24 19:16:07,082 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 112 flow. Second operand 5 states and 120 transitions. [2024-10-24 19:16:07,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 291 flow [2024-10-24 19:16:07,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 279 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-24 19:16:07,085 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 116 flow [2024-10-24 19:16:07,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-10-24 19:16:07,085 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-10-24 19:16:07,086 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 116 flow [2024-10-24 19:16:07,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-10-24 19:16:07,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:07,086 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:07,090 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 [2024-10-24 19:16:07,289 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 [2024-10-24 19:16:07,290 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:07,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:07,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1510036661, now seen corresponding path program 1 times [2024-10-24 19:16:07,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:07,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659109840] [2024-10-24 19:16:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:07,291 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 [2024-10-24 19:16:07,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:07,295 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) [2024-10-24 19:16:07,296 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 [2024-10-24 19:16:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:07,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:16:07,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:07,402 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 [2024-10-24 19:16:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:07,471 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:16:07,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659109840] [2024-10-24 19:16:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659109840] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:16:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:16:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:16:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894959445] [2024-10-24 19:16:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:16:07,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:16:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:16:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:16:07,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-24 19:16:07,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-24 19:16:07,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:07,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-24 19:16:07,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:07,912 INFO L124 PetriNetUnfolderBase]: 2423/3638 cut-off events. [2024-10-24 19:16:07,912 INFO L125 PetriNetUnfolderBase]: For 481/557 co-relation queries the response was YES. [2024-10-24 19:16:07,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7546 conditions, 3638 events. 2423/3638 cut-off events. For 481/557 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16865 event pairs, 2025 based on Foata normal form. 172/3326 useless extension candidates. Maximal degree in co-relation 7515. Up to 3458 conditions per place. [2024-10-24 19:16:07,941 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-10-24 19:16:07,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 180 flow [2024-10-24 19:16:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:16:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:16:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-10-24 19:16:07,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.355 [2024-10-24 19:16:07,943 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 116 flow. Second operand 4 states and 71 transitions. [2024-10-24 19:16:07,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 180 flow [2024-10-24 19:16:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:16:07,946 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2024-10-24 19:16:07,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-10-24 19:16:07,947 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2024-10-24 19:16:07,947 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2024-10-24 19:16:07,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-24 19:16:07,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:07,948 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:07,952 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 (8)] Forceful destruction successful, exit code 0 [2024-10-24 19:16:08,148 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 [2024-10-24 19:16:08,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:08,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1043028666, now seen corresponding path program 1 times [2024-10-24 19:16:08,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:08,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037107016] [2024-10-24 19:16:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:08,150 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 [2024-10-24 19:16:08,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:08,151 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) [2024-10-24 19:16:08,153 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 [2024-10-24 19:16:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:08,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:16:08,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:08,264 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 5 [2024-10-24 19:16:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:08,439 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:16:08,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:08,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037107016] [2024-10-24 19:16:08,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037107016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:16:08,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:16:08,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:16:08,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017412627] [2024-10-24 19:16:08,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:16:08,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:16:08,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:08,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:16:08,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:16:08,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:08,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-24 19:16:08,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:08,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:08,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:09,242 INFO L124 PetriNetUnfolderBase]: 4823/6955 cut-off events. [2024-10-24 19:16:09,242 INFO L125 PetriNetUnfolderBase]: For 635/787 co-relation queries the response was YES. [2024-10-24 19:16:09,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14509 conditions, 6955 events. 4823/6955 cut-off events. For 635/787 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 34662 event pairs, 2385 based on Foata normal form. 0/5825 useless extension candidates. Maximal degree in co-relation 14478. Up to 4022 conditions per place. [2024-10-24 19:16:09,257 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 57 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2024-10-24 19:16:09,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 290 flow [2024-10-24 19:16:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:16:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:16:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-10-24 19:16:09,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.472 [2024-10-24 19:16:09,259 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 5 states and 118 transitions. [2024-10-24 19:16:09,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 290 flow [2024-10-24 19:16:09,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:16:09,260 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 121 flow [2024-10-24 19:16:09,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-10-24 19:16:09,261 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-10-24 19:16:09,261 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 121 flow [2024-10-24 19:16:09,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-24 19:16:09,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:09,265 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:09,269 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 [2024-10-24 19:16:09,465 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 [2024-10-24 19:16:09,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:09,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash 15636116, now seen corresponding path program 1 times [2024-10-24 19:16:09,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:09,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859501337] [2024-10-24 19:16:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:09,467 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 [2024-10-24 19:16:09,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:09,470 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) [2024-10-24 19:16:09,470 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 [2024-10-24 19:16:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:09,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:16:09,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:09,540 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 5 [2024-10-24 19:16:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:09,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:16:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:09,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:09,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859501337] [2024-10-24 19:16:09,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859501337] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:16:09,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:16:09,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:16:09,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977862681] [2024-10-24 19:16:09,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:16:09,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:16:09,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:09,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:16:09,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:16:10,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:10,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 121 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 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) [2024-10-24 19:16:10,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:10,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:10,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:11,615 INFO L124 PetriNetUnfolderBase]: 8849/12685 cut-off events. [2024-10-24 19:16:11,616 INFO L125 PetriNetUnfolderBase]: For 1783/2083 co-relation queries the response was YES. [2024-10-24 19:16:11,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27864 conditions, 12685 events. 8849/12685 cut-off events. For 1783/2083 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 66272 event pairs, 2350 based on Foata normal form. 0/10705 useless extension candidates. Maximal degree in co-relation 27831. Up to 3952 conditions per place. [2024-10-24 19:16:11,650 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 111 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2024-10-24 19:16:11,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 120 transitions, 558 flow [2024-10-24 19:16:11,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 19:16:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 19:16:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-10-24 19:16:11,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5628571428571428 [2024-10-24 19:16:11,652 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 121 flow. Second operand 7 states and 197 transitions. [2024-10-24 19:16:11,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 120 transitions, 558 flow [2024-10-24 19:16:11,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 120 transitions, 546 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:16:11,654 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 145 flow [2024-10-24 19:16:11,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=145, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-10-24 19:16:11,655 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2024-10-24 19:16:11,655 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 145 flow [2024-10-24 19:16:11,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 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) [2024-10-24 19:16:11,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:11,656 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:11,664 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 [2024-10-24 19:16:11,859 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 [2024-10-24 19:16:11,859 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:11,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1517549606, now seen corresponding path program 1 times [2024-10-24 19:16:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798366320] [2024-10-24 19:16:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:11,860 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 [2024-10-24 19:16:11,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:11,862 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) [2024-10-24 19:16:11,863 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 [2024-10-24 19:16:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:11,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:16:11,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:11,948 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 5 [2024-10-24 19:16:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:12,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:16:12,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798366320] [2024-10-24 19:16:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798366320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:16:12,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:16:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:16:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293050139] [2024-10-24 19:16:12,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:16:12,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:16:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:16:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:16:12,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:12,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-10-24 19:16:12,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:12,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:12,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:13,972 INFO L124 PetriNetUnfolderBase]: 15979/22907 cut-off events. [2024-10-24 19:16:13,972 INFO L125 PetriNetUnfolderBase]: For 8242/8808 co-relation queries the response was YES. [2024-10-24 19:16:13,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51576 conditions, 22907 events. 15979/22907 cut-off events. For 8242/8808 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 129454 event pairs, 8668 based on Foata normal form. 0/19025 useless extension candidates. Maximal degree in co-relation 51541. Up to 13843 conditions per place. [2024-10-24 19:16:14,041 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 61 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-10-24 19:16:14,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 360 flow [2024-10-24 19:16:14,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:16:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:16:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-24 19:16:14,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.464 [2024-10-24 19:16:14,042 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 145 flow. Second operand 5 states and 116 transitions. [2024-10-24 19:16:14,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 360 flow [2024-10-24 19:16:14,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 345 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-24 19:16:14,046 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 152 flow [2024-10-24 19:16:14,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-10-24 19:16:14,047 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-10-24 19:16:14,047 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 152 flow [2024-10-24 19:16:14,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-10-24 19:16:14,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:14,048 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:14,051 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 (11)] Forceful destruction successful, exit code 0 [2024-10-24 19:16:14,250 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 [2024-10-24 19:16:14,251 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:14,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:14,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1222303469, now seen corresponding path program 1 times [2024-10-24 19:16:14,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:14,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194049881] [2024-10-24 19:16:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:14,252 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 [2024-10-24 19:16:14,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:14,253 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) [2024-10-24 19:16:14,254 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 [2024-10-24 19:16:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:14,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:16:14,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:14,327 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 5 [2024-10-24 19:16:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:14,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:16:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:14,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194049881] [2024-10-24 19:16:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194049881] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:16:14,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:16:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:16:14,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414332087] [2024-10-24 19:16:14,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:16:14,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:16:14,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:14,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:16:14,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:16:14,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:14,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 152 flow. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:16:14,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:14,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:14,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:19,030 INFO L124 PetriNetUnfolderBase]: 29413/41905 cut-off events. [2024-10-24 19:16:19,030 INFO L125 PetriNetUnfolderBase]: For 13802/15156 co-relation queries the response was YES. [2024-10-24 19:16:19,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96553 conditions, 41905 events. 29413/41905 cut-off events. For 13802/15156 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 250481 event pairs, 8332 based on Foata normal form. 0/34989 useless extension candidates. Maximal degree in co-relation 96516. Up to 13315 conditions per place. [2024-10-24 19:16:19,194 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 117 selfloop transitions, 6 changer transitions 0/126 dead transitions. [2024-10-24 19:16:19,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 658 flow [2024-10-24 19:16:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 19:16:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 19:16:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-10-24 19:16:19,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5457142857142857 [2024-10-24 19:16:19,195 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 152 flow. Second operand 7 states and 191 transitions. [2024-10-24 19:16:19,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 658 flow [2024-10-24 19:16:19,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 126 transitions, 646 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:16:19,206 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 176 flow [2024-10-24 19:16:19,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=176, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2024-10-24 19:16:19,207 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-10-24 19:16:19,207 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 176 flow [2024-10-24 19:16:19,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:16:19,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:19,207 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:19,211 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 [2024-10-24 19:16:19,407 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 [2024-10-24 19:16:19,408 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:19,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash 495469302, now seen corresponding path program 1 times [2024-10-24 19:16:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:19,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43192569] [2024-10-24 19:16:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:16:19,409 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 [2024-10-24 19:16:19,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:19,411 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) [2024-10-24 19:16:19,412 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 [2024-10-24 19:16:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:16:19,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:16:19,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:19,489 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 5 [2024-10-24 19:16:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:19,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:16:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:19,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:19,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43192569] [2024-10-24 19:16:19,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43192569] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:16:19,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:16:19,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:16:19,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347643705] [2024-10-24 19:16:19,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:16:19,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:16:19,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:19,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:16:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:16:19,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:19,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 176 flow. Second operand has 10 states, 10 states have (on average 15.2) internal successors, (152), 10 states have internal predecessors, (152), 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) [2024-10-24 19:16:19,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:19,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:19,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:28,090 INFO L124 PetriNetUnfolderBase]: 54365/77325 cut-off events. [2024-10-24 19:16:28,091 INFO L125 PetriNetUnfolderBase]: For 38256/39962 co-relation queries the response was YES. [2024-10-24 19:16:28,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182788 conditions, 77325 events. 54365/77325 cut-off events. For 38256/39962 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 485829 event pairs, 16846 based on Foata normal form. 0/64327 useless extension candidates. Maximal degree in co-relation 182749. Up to 26361 conditions per place. [2024-10-24 19:16:28,586 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 119 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2024-10-24 19:16:28,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 128 transitions, 731 flow [2024-10-24 19:16:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 19:16:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 19:16:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-10-24 19:16:28,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-10-24 19:16:28,589 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 176 flow. Second operand 7 states and 185 transitions. [2024-10-24 19:16:28,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 128 transitions, 731 flow [2024-10-24 19:16:28,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 128 transitions, 704 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-24 19:16:28,633 INFO L231 Difference]: Finished difference. Result has 66 places, 47 transitions, 197 flow [2024-10-24 19:16:28,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=66, PETRI_TRANSITIONS=47} [2024-10-24 19:16:28,635 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2024-10-24 19:16:28,635 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 47 transitions, 197 flow [2024-10-24 19:16:28,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.2) internal successors, (152), 10 states have internal predecessors, (152), 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) [2024-10-24 19:16:28,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:28,635 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-10-24 19:16:28,641 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 [2024-10-24 19:16:28,836 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 [2024-10-24 19:16:28,836 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:28,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:28,836 INFO L85 PathProgramCache]: Analyzing trace with hash -894270636, now seen corresponding path program 2 times [2024-10-24 19:16:28,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:28,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444147817] [2024-10-24 19:16:28,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:16:28,837 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 [2024-10-24 19:16:28,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:28,840 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) [2024-10-24 19:16:28,841 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 [2024-10-24 19:16:28,921 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:16:28,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:16:28,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 19:16:28,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:28,929 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 5 [2024-10-24 19:16:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:29,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:16:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:29,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:29,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444147817] [2024-10-24 19:16:29,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444147817] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:16:29,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:16:29,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-10-24 19:16:29,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606910415] [2024-10-24 19:16:29,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:16:29,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:16:29,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:29,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:16:29,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:16:29,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:29,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 47 transitions, 197 flow. Second operand has 13 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 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) [2024-10-24 19:16:29,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:29,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:29,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:37,123 INFO L124 PetriNetUnfolderBase]: 48759/69655 cut-off events. [2024-10-24 19:16:37,125 INFO L125 PetriNetUnfolderBase]: For 37586/39336 co-relation queries the response was YES. [2024-10-24 19:16:37,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166303 conditions, 69655 events. 48759/69655 cut-off events. For 37586/39336 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 449681 event pairs, 1280 based on Foata normal form. 0/59261 useless extension candidates. Maximal degree in co-relation 166261. Up to 17608 conditions per place. [2024-10-24 19:16:37,678 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 151 selfloop transitions, 6 changer transitions 0/160 dead transitions. [2024-10-24 19:16:37,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 160 transitions, 912 flow [2024-10-24 19:16:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:16:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:16:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-10-24 19:16:37,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-10-24 19:16:37,680 INFO L175 Difference]: Start difference. First operand has 66 places, 47 transitions, 197 flow. Second operand 8 states and 222 transitions. [2024-10-24 19:16:37,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 160 transitions, 912 flow [2024-10-24 19:16:38,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 160 transitions, 870 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-10-24 19:16:38,374 INFO L231 Difference]: Finished difference. Result has 66 places, 45 transitions, 180 flow [2024-10-24 19:16:38,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=180, PETRI_PLACES=66, PETRI_TRANSITIONS=45} [2024-10-24 19:16:38,375 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2024-10-24 19:16:38,376 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 45 transitions, 180 flow [2024-10-24 19:16:38,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 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) [2024-10-24 19:16:38,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:38,376 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:38,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-24 19:16:38,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:16:38,580 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:38,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:38,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1506668467, now seen corresponding path program 2 times [2024-10-24 19:16:38,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:38,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237004888] [2024-10-24 19:16:38,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:16:38,584 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 [2024-10-24 19:16:38,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:38,588 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:16:38,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-24 19:16:38,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:16:38,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:16:38,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 19:16:38,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:38,719 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 5 [2024-10-24 19:16:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:38,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:16:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:39,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:39,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237004888] [2024-10-24 19:16:39,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237004888] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:16:39,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:16:39,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-10-24 19:16:39,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269588965] [2024-10-24 19:16:39,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:16:39,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:16:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:16:39,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:16:39,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:39,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 45 transitions, 180 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 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) [2024-10-24 19:16:39,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:39,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:39,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:16:45,860 INFO L124 PetriNetUnfolderBase]: 45491/65391 cut-off events. [2024-10-24 19:16:45,860 INFO L125 PetriNetUnfolderBase]: For 32817/33625 co-relation queries the response was YES. [2024-10-24 19:16:46,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154883 conditions, 65391 events. 45491/65391 cut-off events. For 32817/33625 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 420966 event pairs, 1335 based on Foata normal form. 0/58915 useless extension candidates. Maximal degree in co-relation 154843. Up to 16540 conditions per place. [2024-10-24 19:16:46,179 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 139 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-10-24 19:16:46,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 147 transitions, 818 flow [2024-10-24 19:16:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:16:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:16:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-10-24 19:16:46,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-24 19:16:46,181 INFO L175 Difference]: Start difference. First operand has 66 places, 45 transitions, 180 flow. Second operand 8 states and 215 transitions. [2024-10-24 19:16:46,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 147 transitions, 818 flow [2024-10-24 19:16:46,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 147 transitions, 770 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-24 19:16:46,527 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 161 flow [2024-10-24 19:16:46,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=161, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2024-10-24 19:16:46,528 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2024-10-24 19:16:46,528 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 161 flow [2024-10-24 19:16:46,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 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) [2024-10-24 19:16:46,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:16:46,528 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:16:46,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-24 19:16:46,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:16:46,733 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:16:46,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:16:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1614492918, now seen corresponding path program 2 times [2024-10-24 19:16:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:16:46,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690740119] [2024-10-24 19:16:46,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:16:46,734 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 [2024-10-24 19:16:46,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:16:46,736 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:16:46,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-24 19:16:46,827 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:16:46,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:16:46,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 19:16:46,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:16:46,837 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 5 [2024-10-24 19:16:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:46,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:16:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 19:16:47,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:16:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690740119] [2024-10-24 19:16:47,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690740119] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:16:47,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:16:47,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-10-24 19:16:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270749336] [2024-10-24 19:16:47,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:16:47,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:16:47,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:16:47,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:16:47,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:16:47,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 19:16:47,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 161 flow. Second operand has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 13 states have internal predecessors, (200), 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) [2024-10-24 19:16:47,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:16:47,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 19:16:47,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand