./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/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:49:36,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:49:36,948 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:49:36,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:49:36,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:49:36,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:49:36,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:49:36,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:49:36,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:49:36,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:49:36,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:49:36,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:49:36,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:49:36,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:49:36,983 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:49:36,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:49:36,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:49:36,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:49:36,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:49:36,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:49:36,985 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:49:36,986 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:49:36,986 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:49:36,987 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:49:36,987 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:49:36,987 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:49:36,987 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:49:36,988 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:49:36,988 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:49:36,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:49:36,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:49:36,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:49:36,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:49:36,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:49:36,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:49:36,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:49:36,989 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:49:36,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:49:36,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:49:36,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:49:36,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:49:36,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:49:36,991 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-10-11 19:49:37,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:49:37,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:49:37,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:49:37,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:49:37,240 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:49:37,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-10-11 19:49:38,381 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:49:38,544 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:49:38,545 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-10-11 19:49:38,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/78d495402/e75364c6cb164dd09edb7f9229db1569/FLAG27de89f84 [2024-10-11 19:49:38,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/78d495402/e75364c6cb164dd09edb7f9229db1569 [2024-10-11 19:49:38,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:49:38,950 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:49:38,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:49:38,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:49:38,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:49:38,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:49:38" (1/1) ... [2024-10-11 19:49:38,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0300a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:38, skipping insertion in model container [2024-10-11 19:49:38,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:49:38" (1/1) ... [2024-10-11 19:49:38,984 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:49:39,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:49:39,165 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:49:39,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@255b271d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:39, skipping insertion in model container [2024-10-11 19:49:39,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:49:39,167 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:49:39,168 INFO L158 Benchmark]: Toolchain (without parser) took 217.18ms. Allocated memory is still 169.9MB. Free memory was 138.4MB in the beginning and 131.6MB in the end (delta: 6.9MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-10-11 19:49:39,168 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 139.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:49:39,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.60ms. Allocated memory is still 169.9MB. Free memory was 138.2MB in the beginning and 131.6MB in the end (delta: 6.7MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-10-11 19:49:39,170 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 139.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.60ms. Allocated memory is still 169.9MB. Free memory was 138.2MB in the beginning and 131.6MB in the end (delta: 6.7MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 111]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:49:40,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:49:40,770 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:49:40,773 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:49:40,773 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:49:40,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:49:40,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:49:40,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:49:40,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:49:40,798 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:49:40,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:49:40,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:49:40,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:49:40,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:49:40,801 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:49:40,802 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:49:40,802 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:49:40,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:49:40,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:49:40,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:49:40,802 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:49:40,803 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:49:40,803 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:49:40,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:49:40,803 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:49:40,804 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:49:40,804 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:49:40,804 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:49:40,805 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:49:40,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:49:40,805 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:49:40,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:49:40,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:49:40,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:49:40,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:49:40,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:49:40,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:49:40,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:49:40,807 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:49:40,808 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:49:40,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:49:40,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:49:40,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:49:40,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:49:40,808 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:49:40,809 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-10-11 19:49:41,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:49:41,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:49:41,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:49:41,056 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:49:41,057 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:49:41,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-10-11 19:49:42,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:49:42,469 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:49:42,469 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-10-11 19:49:42,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fe6edb7c7/f1bb575bad46475eb3da1b9d99c361fd/FLAG2b3946ff7 [2024-10-11 19:49:42,486 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fe6edb7c7/f1bb575bad46475eb3da1b9d99c361fd [2024-10-11 19:49:42,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:49:42,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:49:42,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:49:42,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:49:42,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:49:42,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a33b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42, skipping insertion in model container [2024-10-11 19:49:42,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:49:42,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:49:42,734 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:49:42,737 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:49:42,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:49:42,762 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:49:42,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:49:42,809 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:49:42,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42 WrapperNode [2024-10-11 19:49:42,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:49:42,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:49:42,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:49:42,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:49:42,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,849 INFO L138 Inliner]: procedures = 25, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 190 [2024-10-11 19:49:42,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:49:42,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:49:42,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:49:42,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:49:42,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,893 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-11 19:49:42,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:49:42,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:49:42,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:49:42,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:49:42,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (1/1) ... [2024-10-11 19:49:42,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:49:42,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:49:42,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:49:42,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:49:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:49:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:49:42,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:49:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:49:42,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:49:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:49:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:49:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:49:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:49:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:49:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:49:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:49:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:49:43,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:49:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:49:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:49:43,003 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:49:43,106 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:49:43,107 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:49:43,599 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:49:43,599 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:49:43,824 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:49:43,824 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 19:49:43,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:49:43 BoogieIcfgContainer [2024-10-11 19:49:43,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:49:43,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:49:43,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:49:43,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:49:43,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:49:42" (1/3) ... [2024-10-11 19:49:43,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3855dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:49:43, skipping insertion in model container [2024-10-11 19:49:43,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:42" (2/3) ... [2024-10-11 19:49:43,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3855dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:49:43, skipping insertion in model container [2024-10-11 19:49:43,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:49:43" (3/3) ... [2024-10-11 19:49:43,830 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-10-11 19:49:43,842 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:49:43,842 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-11 19:49:43,842 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:49:43,908 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:49:43,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 105 transitions, 231 flow [2024-10-11 19:49:43,971 INFO L124 PetriNetUnfolderBase]: 15/102 cut-off events. [2024-10-11 19:49:43,971 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:49:43,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 15/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 297 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-10-11 19:49:43,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 105 transitions, 231 flow [2024-10-11 19:49:43,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 101 transitions, 220 flow [2024-10-11 19:49:43,988 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:49:43,994 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;@2231c4c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:49:43,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-10-11 19:49:43,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:49:43,996 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:49:43,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:49:43,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:49:43,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:49:43,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:49:44,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:49:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash 760181, now seen corresponding path program 1 times [2024-10-11 19:49:44,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:49:44,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119568350] [2024-10-11 19:49:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:49:44,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:44,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:49:44,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:49:44,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:49:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:49:44,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:49:44,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:49:44,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:49:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:49:44,137 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:49:44,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:49:44,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119568350] [2024-10-11 19:49:44,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119568350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:49:44,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:49:44,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:49:44,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983293836] [2024-10-11 19:49:44,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:49:44,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:49:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:49:44,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:49:44,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:49:44,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 105 [2024-10-11 19:49:44,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 101 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:44,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:49:44,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 105 [2024-10-11 19:49:44,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:49:44,486 INFO L124 PetriNetUnfolderBase]: 703/1193 cut-off events. [2024-10-11 19:49:44,486 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-11 19:49:44,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 1193 events. 703/1193 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5747 event pairs, 266 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 1879. Up to 878 conditions per place. [2024-10-11 19:49:44,499 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 38 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-10-11 19:49:44,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 96 transitions, 290 flow [2024-10-11 19:49:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:49:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:49:44,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-10-11 19:49:44,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-10-11 19:49:44,513 INFO L175 Difference]: Start difference. First operand has 96 places, 101 transitions, 220 flow. Second operand 3 states and 224 transitions. [2024-10-11 19:49:44,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 96 transitions, 290 flow [2024-10-11 19:49:44,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 96 transitions, 278 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:49:44,521 INFO L231 Difference]: Finished difference. Result has 87 places, 96 transitions, 202 flow [2024-10-11 19:49:44,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=87, PETRI_TRANSITIONS=96} [2024-10-11 19:49:44,526 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -9 predicate places. [2024-10-11 19:49:44,527 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 96 transitions, 202 flow [2024-10-11 19:49:44,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:44,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:49:44,527 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:49:44,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-11 19:49:44,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:44,730 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:49:44,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:49:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash 760182, now seen corresponding path program 1 times [2024-10-11 19:49:44,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:49:44,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508946591] [2024-10-11 19:49:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:49:44,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:44,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:49:44,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:49:44,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:49:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:49:44,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:49:44,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:49:44,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:49:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:49:44,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:49:44,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:49:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508946591] [2024-10-11 19:49:44,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508946591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:49:44,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:49:44,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:49:44,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134841445] [2024-10-11 19:49:44,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:49:44,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:49:44,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:49:44,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:49:44,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:49:45,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 105 [2024-10-11 19:49:45,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 96 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:45,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:49:45,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 105 [2024-10-11 19:49:45,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:49:45,407 INFO L124 PetriNetUnfolderBase]: 706/1202 cut-off events. [2024-10-11 19:49:45,408 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 19:49:45,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 1202 events. 706/1202 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5764 event pairs, 266 based on Foata normal form. 0/738 useless extension candidates. Maximal degree in co-relation 2077. Up to 891 conditions per place. [2024-10-11 19:49:45,428 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 42 selfloop transitions, 10 changer transitions 0/105 dead transitions. [2024-10-11 19:49:45,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 326 flow [2024-10-11 19:49:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:49:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:49:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2024-10-11 19:49:45,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-10-11 19:49:45,435 INFO L175 Difference]: Start difference. First operand has 87 places, 96 transitions, 202 flow. Second operand 4 states and 295 transitions. [2024-10-11 19:49:45,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 326 flow [2024-10-11 19:49:45,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 105 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:49:45,439 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 280 flow [2024-10-11 19:49:45,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2024-10-11 19:49:45,440 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -5 predicate places. [2024-10-11 19:49:45,440 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 280 flow [2024-10-11 19:49:45,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:45,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:49:45,442 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:49:45,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 19:49:45,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:45,644 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:49:45,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:49:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash 730558958, now seen corresponding path program 1 times [2024-10-11 19:49:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:49:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506540271] [2024-10-11 19:49:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:49:45,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:45,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:49:45,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:49:45,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:49:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:49:45,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:49:45,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:49:45,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:49:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:49:45,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:49:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:49:46,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:49:46,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506540271] [2024-10-11 19:49:46,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506540271] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:49:46,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:49:46,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:49:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947135976] [2024-10-11 19:49:46,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:49:46,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:49:46,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:49:46,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:49:46,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:49:46,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 105 [2024-10-11 19:49:46,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 280 flow. Second operand has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:46,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:49:46,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 105 [2024-10-11 19:49:46,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:49:48,061 INFO L124 PetriNetUnfolderBase]: 715/1229 cut-off events. [2024-10-11 19:49:48,061 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-11 19:49:48,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 1229 events. 715/1229 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5937 event pairs, 266 based on Foata normal form. 0/765 useless extension candidates. Maximal degree in co-relation 2091. Up to 894 conditions per place. [2024-10-11 19:49:48,070 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 42 selfloop transitions, 37 changer transitions 0/132 dead transitions. [2024-10-11 19:49:48,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 132 transitions, 558 flow [2024-10-11 19:49:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:49:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:49:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 688 transitions. [2024-10-11 19:49:48,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6552380952380953 [2024-10-11 19:49:48,074 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 280 flow. Second operand 10 states and 688 transitions. [2024-10-11 19:49:48,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 132 transitions, 558 flow [2024-10-11 19:49:48,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 132 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:49:48,077 INFO L231 Difference]: Finished difference. Result has 103 places, 132 transitions, 524 flow [2024-10-11 19:49:48,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=524, PETRI_PLACES=103, PETRI_TRANSITIONS=132} [2024-10-11 19:49:48,077 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 7 predicate places. [2024-10-11 19:49:48,077 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 132 transitions, 524 flow [2024-10-11 19:49:48,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:48,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:49:48,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:49:48,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:49:48,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:48,279 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:49:48,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:49:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1540906127, now seen corresponding path program 1 times [2024-10-11 19:49:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:49:48,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025206424] [2024-10-11 19:49:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:49:48,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:48,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:49:48,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:49:48,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:49:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:49:48,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:49:48,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:49:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:49:48,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:49:48,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:49:48,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025206424] [2024-10-11 19:49:48,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025206424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:49:48,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:49:48,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:49:48,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834115846] [2024-10-11 19:49:48,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:49:48,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:49:48,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:49:48,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:49:48,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:49:48,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 105 [2024-10-11 19:49:48,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 132 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:48,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:49:48,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 105 [2024-10-11 19:49:48,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:49:48,751 INFO L124 PetriNetUnfolderBase]: 1238/2234 cut-off events. [2024-10-11 19:49:48,751 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-10-11 19:49:48,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 2234 events. 1238/2234 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12957 event pairs, 533 based on Foata normal form. 0/1407 useless extension candidates. Maximal degree in co-relation 3995. Up to 1050 conditions per place. [2024-10-11 19:49:48,763 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 132 selfloop transitions, 3 changer transitions 0/190 dead transitions. [2024-10-11 19:49:48,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 190 transitions, 1064 flow [2024-10-11 19:49:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:49:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:49:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-10-11 19:49:48,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7785714285714286 [2024-10-11 19:49:48,765 INFO L175 Difference]: Start difference. First operand has 103 places, 132 transitions, 524 flow. Second operand 4 states and 327 transitions. [2024-10-11 19:49:48,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 190 transitions, 1064 flow [2024-10-11 19:49:48,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 190 transitions, 908 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-11 19:49:48,770 INFO L231 Difference]: Finished difference. Result has 103 places, 132 transitions, 438 flow [2024-10-11 19:49:48,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=103, PETRI_TRANSITIONS=132} [2024-10-11 19:49:48,771 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 7 predicate places. [2024-10-11 19:49:48,771 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 132 transitions, 438 flow [2024-10-11 19:49:48,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:48,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:49:48,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:49:48,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:49:48,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:48,973 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:49:48,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:49:48,973 INFO L85 PathProgramCache]: Analyzing trace with hash 877382757, now seen corresponding path program 1 times [2024-10-11 19:49:48,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:49:48,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040134234] [2024-10-11 19:49:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:49:48,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:48,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:49:48,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:49:48,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:49:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:49:49,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:49:49,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:49:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:49:49,125 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:49:49,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:49:49,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040134234] [2024-10-11 19:49:49,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040134234] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:49:49,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:49:49,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:49:49,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440644554] [2024-10-11 19:49:49,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:49:49,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:49:49,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:49:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:49:49,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:49:49,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 105 [2024-10-11 19:49:49,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 132 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:49,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:49:49,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 105 [2024-10-11 19:49:49,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:49:49,851 INFO L124 PetriNetUnfolderBase]: 2795/5159 cut-off events. [2024-10-11 19:49:49,852 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-10-11 19:49:49,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9218 conditions, 5159 events. 2795/5159 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 36127 event pairs, 840 based on Foata normal form. 0/3346 useless extension candidates. Maximal degree in co-relation 9052. Up to 1512 conditions per place. [2024-10-11 19:49:49,891 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 139 selfloop transitions, 9 changer transitions 0/203 dead transitions. [2024-10-11 19:49:49,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 203 transitions, 928 flow [2024-10-11 19:49:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:49:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:49:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2024-10-11 19:49:49,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7885714285714286 [2024-10-11 19:49:49,894 INFO L175 Difference]: Start difference. First operand has 103 places, 132 transitions, 438 flow. Second operand 5 states and 414 transitions. [2024-10-11 19:49:49,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 203 transitions, 928 flow [2024-10-11 19:49:49,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 203 transitions, 924 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:49:49,899 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 467 flow [2024-10-11 19:49:49,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=467, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2024-10-11 19:49:49,900 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 12 predicate places. [2024-10-11 19:49:49,900 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 467 flow [2024-10-11 19:49:49,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:49,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:49:49,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:49:49,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:49:50,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:50,104 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:49:50,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:49:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash 865359353, now seen corresponding path program 1 times [2024-10-11 19:49:50,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:49:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082430015] [2024-10-11 19:49:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:49:50,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:50,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:49:50,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:49:50,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:49:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:49:50,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:49:50,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:49:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:49:50,238 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:49:50,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:49:50,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082430015] [2024-10-11 19:49:50,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082430015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:49:50,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:49:50,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:49:50,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79433149] [2024-10-11 19:49:50,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:49:50,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:49:50,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:49:50,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:49:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:49:50,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 105 [2024-10-11 19:49:50,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 467 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:50,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:49:50,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 105 [2024-10-11 19:49:50,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:49:50,939 INFO L124 PetriNetUnfolderBase]: 2908/5444 cut-off events. [2024-10-11 19:49:50,939 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2024-10-11 19:49:50,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10209 conditions, 5444 events. 2908/5444 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 37979 event pairs, 1057 based on Foata normal form. 30/3928 useless extension candidates. Maximal degree in co-relation 10039. Up to 1943 conditions per place. [2024-10-11 19:49:50,964 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 141 selfloop transitions, 9 changer transitions 0/205 dead transitions. [2024-10-11 19:49:50,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 205 transitions, 971 flow [2024-10-11 19:49:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:49:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:49:50,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2024-10-11 19:49:50,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7885714285714286 [2024-10-11 19:49:50,967 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 467 flow. Second operand 5 states and 414 transitions. [2024-10-11 19:49:50,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 205 transitions, 971 flow [2024-10-11 19:49:50,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 205 transitions, 966 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:49:50,972 INFO L231 Difference]: Finished difference. Result has 113 places, 134 transitions, 496 flow [2024-10-11 19:49:50,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=113, PETRI_TRANSITIONS=134} [2024-10-11 19:49:50,974 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 17 predicate places. [2024-10-11 19:49:50,975 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 134 transitions, 496 flow [2024-10-11 19:49:50,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:50,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:49:50,975 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:49:50,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 19:49:51,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:51,176 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:49:51,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:49:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash 319784790, now seen corresponding path program 2 times [2024-10-11 19:49:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:49:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908127181] [2024-10-11 19:49:51,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:49:51,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:49:51,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:49:51,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:49:51,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:49:51,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:49:51,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:49:51,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:49:51,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:49:51,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:49:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:49:51,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:49:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:49:51,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:49:51,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908127181] [2024-10-11 19:49:51,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908127181] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:49:51,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:49:51,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:49:51,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390157684] [2024-10-11 19:49:51,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:49:51,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:49:51,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:49:51,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:49:51,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:49:54,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 105 [2024-10-11 19:49:54,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 134 transitions, 496 flow. Second operand has 14 states, 14 states have (on average 61.57142857142857) internal successors, (862), 14 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:49:54,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:49:54,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 105 [2024-10-11 19:49:54,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:07,389 INFO L124 PetriNetUnfolderBase]: 2540/4673 cut-off events. [2024-10-11 19:50:07,389 INFO L125 PetriNetUnfolderBase]: For 699/699 co-relation queries the response was YES. [2024-10-11 19:50:07,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9153 conditions, 4673 events. 2540/4673 cut-off events. For 699/699 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 31064 event pairs, 1336 based on Foata normal form. 42/3394 useless extension candidates. Maximal degree in co-relation 8510. Up to 3410 conditions per place. [2024-10-11 19:50:07,406 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 44 selfloop transitions, 91 changer transitions 0/188 dead transitions. [2024-10-11 19:50:07,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 188 transitions, 1066 flow [2024-10-11 19:50:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:50:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:50:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1471 transitions. [2024-10-11 19:50:07,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6367965367965368 [2024-10-11 19:50:07,413 INFO L175 Difference]: Start difference. First operand has 113 places, 134 transitions, 496 flow. Second operand 22 states and 1471 transitions. [2024-10-11 19:50:07,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 188 transitions, 1066 flow [2024-10-11 19:50:07,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 188 transitions, 1026 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:50:07,419 INFO L231 Difference]: Finished difference. Result has 137 places, 188 transitions, 1024 flow [2024-10-11 19:50:07,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1024, PETRI_PLACES=137, PETRI_TRANSITIONS=188} [2024-10-11 19:50:07,420 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 41 predicate places. [2024-10-11 19:50:07,420 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 188 transitions, 1024 flow [2024-10-11 19:50:07,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 61.57142857142857) internal successors, (862), 14 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:07,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:07,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:07,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 19:50:07,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:07,625 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:50:07,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1763626706, now seen corresponding path program 1 times [2024-10-11 19:50:07,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207215942] [2024-10-11 19:50:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:07,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:07,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:07,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:50:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:07,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:50:07,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:50:07,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:07,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:07,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207215942] [2024-10-11 19:50:07,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207215942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:07,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:07,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:50:07,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158897380] [2024-10-11 19:50:07,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:07,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:50:07,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:07,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:50:07,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:50:07,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 105 [2024-10-11 19:50:07,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 188 transitions, 1024 flow. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:07,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:07,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 105 [2024-10-11 19:50:07,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:08,522 INFO L124 PetriNetUnfolderBase]: 4444/8627 cut-off events. [2024-10-11 19:50:08,522 INFO L125 PetriNetUnfolderBase]: For 1075/1075 co-relation queries the response was YES. [2024-10-11 19:50:08,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16358 conditions, 8627 events. 4444/8627 cut-off events. For 1075/1075 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 67883 event pairs, 1729 based on Foata normal form. 84/6439 useless extension candidates. Maximal degree in co-relation 16098. Up to 2469 conditions per place. [2024-10-11 19:50:08,566 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 175 selfloop transitions, 15 changer transitions 0/245 dead transitions. [2024-10-11 19:50:08,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 245 transitions, 1538 flow [2024-10-11 19:50:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:08,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:08,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2024-10-11 19:50:08,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7828571428571428 [2024-10-11 19:50:08,569 INFO L175 Difference]: Start difference. First operand has 137 places, 188 transitions, 1024 flow. Second operand 5 states and 411 transitions. [2024-10-11 19:50:08,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 245 transitions, 1538 flow [2024-10-11 19:50:08,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 245 transitions, 1306 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-10-11 19:50:08,580 INFO L231 Difference]: Finished difference. Result has 133 places, 188 transitions, 825 flow [2024-10-11 19:50:08,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=825, PETRI_PLACES=133, PETRI_TRANSITIONS=188} [2024-10-11 19:50:08,581 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 37 predicate places. [2024-10-11 19:50:08,581 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 188 transitions, 825 flow [2024-10-11 19:50:08,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:08,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:08,582 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:08,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:50:08,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:08,783 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:50:08,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1326189274, now seen corresponding path program 1 times [2024-10-11 19:50:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98417856] [2024-10-11 19:50:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:08,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:08,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:08,786 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:08,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:50:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:08,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:50:08,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:08,909 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:08,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:08,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98417856] [2024-10-11 19:50:08,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98417856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:08,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:08,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:50:08,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141358635] [2024-10-11 19:50:08,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:08,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:08,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:08,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:08,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:08,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 105 [2024-10-11 19:50:08,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 188 transitions, 825 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:08,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:08,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 105 [2024-10-11 19:50:08,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:09,426 INFO L124 PetriNetUnfolderBase]: 3555/6112 cut-off events. [2024-10-11 19:50:09,426 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2024-10-11 19:50:09,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12517 conditions, 6112 events. 3555/6112 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 40002 event pairs, 2300 based on Foata normal form. 0/4924 useless extension candidates. Maximal degree in co-relation 12296. Up to 3907 conditions per place. [2024-10-11 19:50:09,449 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 223 selfloop transitions, 3 changer transitions 0/281 dead transitions. [2024-10-11 19:50:09,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 281 transitions, 1686 flow [2024-10-11 19:50:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:50:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:50:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2024-10-11 19:50:09,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2024-10-11 19:50:09,451 INFO L175 Difference]: Start difference. First operand has 133 places, 188 transitions, 825 flow. Second operand 4 states and 325 transitions. [2024-10-11 19:50:09,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 281 transitions, 1686 flow [2024-10-11 19:50:09,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 281 transitions, 1683 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:50:09,458 INFO L231 Difference]: Finished difference. Result has 136 places, 188 transitions, 832 flow [2024-10-11 19:50:09,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=832, PETRI_PLACES=136, PETRI_TRANSITIONS=188} [2024-10-11 19:50:09,459 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 40 predicate places. [2024-10-11 19:50:09,459 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 188 transitions, 832 flow [2024-10-11 19:50:09,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:09,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:09,459 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:09,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 19:50:09,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:09,660 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:50:09,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2009344254, now seen corresponding path program 1 times [2024-10-11 19:50:09,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:09,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025082184] [2024-10-11 19:50:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:09,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:09,662 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:09,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:50:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:09,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:50:09,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:09,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:50:09,783 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:50:09,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:50:09,810 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 19:50:09,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 19:50:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:50:09,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:09,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:09,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025082184] [2024-10-11 19:50:09,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025082184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:09,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:09,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:50:09,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981602692] [2024-10-11 19:50:09,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:09,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:09,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:09,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:09,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-10-11 19:50:09,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 188 transitions, 832 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:09,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:09,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-10-11 19:50:09,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:10,519 INFO L124 PetriNetUnfolderBase]: 4159/7214 cut-off events. [2024-10-11 19:50:10,519 INFO L125 PetriNetUnfolderBase]: For 1183/1183 co-relation queries the response was YES. [2024-10-11 19:50:10,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14650 conditions, 7214 events. 4159/7214 cut-off events. For 1183/1183 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 49206 event pairs, 2731 based on Foata normal form. 0/6212 useless extension candidates. Maximal degree in co-relation 14428. Up to 5887 conditions per place. [2024-10-11 19:50:10,547 INFO L140 encePairwiseOnDemand]: 98/105 looper letters, 113 selfloop transitions, 23 changer transitions 0/184 dead transitions. [2024-10-11 19:50:10,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 184 transitions, 1096 flow [2024-10-11 19:50:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 308 transitions. [2024-10-11 19:50:10,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-10-11 19:50:10,549 INFO L175 Difference]: Start difference. First operand has 136 places, 188 transitions, 832 flow. Second operand 5 states and 308 transitions. [2024-10-11 19:50:10,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 184 transitions, 1096 flow [2024-10-11 19:50:10,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 184 transitions, 1091 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:50:10,555 INFO L231 Difference]: Finished difference. Result has 134 places, 184 transitions, 865 flow [2024-10-11 19:50:10,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=865, PETRI_PLACES=134, PETRI_TRANSITIONS=184} [2024-10-11 19:50:10,556 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 38 predicate places. [2024-10-11 19:50:10,556 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 184 transitions, 865 flow [2024-10-11 19:50:10,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:10,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:10,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:10,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-11 19:50:10,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:10,757 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:50:10,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:10,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2009344253, now seen corresponding path program 1 times [2024-10-11 19:50:10,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:10,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814813781] [2024-10-11 19:50:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:10,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:10,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:10,760 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:10,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:50:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:10,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:50:10,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:10,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:50:10,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:50:10,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:50:10,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:50:10,997 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:50:10,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:50:11,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:50:11,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:50:11,073 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:50:11,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:50:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:50:11,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:50:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:50:12,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:12,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814813781] [2024-10-11 19:50:12,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814813781] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:50:12,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:50:12,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:50:12,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122456878] [2024-10-11 19:50:12,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:50:12,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:50:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:50:12,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:50:17,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 19:50:24,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:50:28,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 19:50:32,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:50:37,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 19:50:37,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 105 [2024-10-11 19:50:37,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 184 transitions, 865 flow. Second operand has 12 states, 12 states have (on average 36.666666666666664) internal successors, (440), 12 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:37,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:37,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 105 [2024-10-11 19:50:37,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:43,655 INFO L124 PetriNetUnfolderBase]: 14918/24719 cut-off events. [2024-10-11 19:50:43,655 INFO L125 PetriNetUnfolderBase]: For 2960/2960 co-relation queries the response was YES. [2024-10-11 19:50:43,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49701 conditions, 24719 events. 14918/24719 cut-off events. For 2960/2960 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 200002 event pairs, 8916 based on Foata normal form. 0/21685 useless extension candidates. Maximal degree in co-relation 49287. Up to 8683 conditions per place. [2024-10-11 19:50:43,770 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 213 selfloop transitions, 183 changer transitions 0/428 dead transitions. [2024-10-11 19:50:43,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 428 transitions, 2802 flow [2024-10-11 19:50:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:50:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:50:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 744 transitions. [2024-10-11 19:50:43,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4723809523809524 [2024-10-11 19:50:43,773 INFO L175 Difference]: Start difference. First operand has 134 places, 184 transitions, 865 flow. Second operand 15 states and 744 transitions. [2024-10-11 19:50:43,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 428 transitions, 2802 flow [2024-10-11 19:50:43,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 428 transitions, 2741 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:50:43,786 INFO L231 Difference]: Finished difference. Result has 156 places, 304 transitions, 2219 flow [2024-10-11 19:50:43,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2219, PETRI_PLACES=156, PETRI_TRANSITIONS=304} [2024-10-11 19:50:43,786 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 60 predicate places. [2024-10-11 19:50:43,786 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 304 transitions, 2219 flow [2024-10-11 19:50:43,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.666666666666664) internal successors, (440), 12 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:43,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:43,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:43,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 19:50:43,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:43,988 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:50:43,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2134838336, now seen corresponding path program 1 times [2024-10-11 19:50:43,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:43,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125182098] [2024-10-11 19:50:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:43,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:43,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:43,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:43,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:50:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:44,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 19:50:44,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:44,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:50:44,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:50:44,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:50:44,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:50:44,208 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:50:44,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:50:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:50:44,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:50:44,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:50:44,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 62 [2024-10-11 19:50:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:50:44,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:44,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125182098] [2024-10-11 19:50:44,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125182098] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:50:44,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:50:44,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:50:44,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172632847] [2024-10-11 19:50:44,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:50:44,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:50:44,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:50:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:50:47,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 105 [2024-10-11 19:50:47,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 304 transitions, 2219 flow. Second operand has 12 states, 12 states have (on average 55.666666666666664) internal successors, (668), 12 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:47,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:47,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 105 [2024-10-11 19:50:47,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:52,072 INFO L124 PetriNetUnfolderBase]: 15315/27914 cut-off events. [2024-10-11 19:50:52,072 INFO L125 PetriNetUnfolderBase]: For 6249/6249 co-relation queries the response was YES. [2024-10-11 19:50:52,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56622 conditions, 27914 events. 15315/27914 cut-off events. For 6249/6249 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 246480 event pairs, 7541 based on Foata normal form. 0/21775 useless extension candidates. Maximal degree in co-relation 55796. Up to 7567 conditions per place. [2024-10-11 19:50:52,364 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 216 selfloop transitions, 334 changer transitions 0/598 dead transitions. [2024-10-11 19:50:52,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 598 transitions, 5114 flow [2024-10-11 19:50:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 19:50:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 19:50:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1366 transitions. [2024-10-11 19:50:52,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6195011337868481 [2024-10-11 19:50:52,369 INFO L175 Difference]: Start difference. First operand has 156 places, 304 transitions, 2219 flow. Second operand 21 states and 1366 transitions. [2024-10-11 19:50:52,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 598 transitions, 5114 flow [2024-10-11 19:50:52,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 598 transitions, 5114 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:50:52,407 INFO L231 Difference]: Finished difference. Result has 181 places, 448 transitions, 4423 flow [2024-10-11 19:50:52,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4423, PETRI_PLACES=181, PETRI_TRANSITIONS=448} [2024-10-11 19:50:52,408 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 85 predicate places. [2024-10-11 19:50:52,408 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 448 transitions, 4423 flow [2024-10-11 19:50:52,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.666666666666664) internal successors, (668), 12 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:52,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:52,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:52,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 19:50:52,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:52,610 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:50:52,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:52,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2134838335, now seen corresponding path program 1 times [2024-10-11 19:50:52,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:52,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037175133] [2024-10-11 19:50:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:52,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:52,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:52,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:52,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 19:50:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:52,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:50:52,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:52,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:50:52,713 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 19:50:52,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 19:50:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:50:52,746 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:52,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037175133] [2024-10-11 19:50:52,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037175133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:52,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:52,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:50:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416531304] [2024-10-11 19:50:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:52,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:52,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:52,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:52,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-10-11 19:50:52,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 448 transitions, 4423 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:52,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:52,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-10-11 19:50:52,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:55,766 INFO L124 PetriNetUnfolderBase]: 17091/30563 cut-off events. [2024-10-11 19:50:55,766 INFO L125 PetriNetUnfolderBase]: For 13592/13790 co-relation queries the response was YES. [2024-10-11 19:50:55,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65852 conditions, 30563 events. 17091/30563 cut-off events. For 13592/13790 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 269282 event pairs, 10186 based on Foata normal form. 771/25148 useless extension candidates. Maximal degree in co-relation 64906. Up to 23747 conditions per place. [2024-10-11 19:50:56,006 INFO L140 encePairwiseOnDemand]: 98/105 looper letters, 333 selfloop transitions, 64 changer transitions 0/444 dead transitions. [2024-10-11 19:50:56,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 444 transitions, 5209 flow [2024-10-11 19:50:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 312 transitions. [2024-10-11 19:50:56,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942857142857143 [2024-10-11 19:50:56,008 INFO L175 Difference]: Start difference. First operand has 181 places, 448 transitions, 4423 flow. Second operand 5 states and 312 transitions. [2024-10-11 19:50:56,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 444 transitions, 5209 flow [2024-10-11 19:50:56,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 444 transitions, 5091 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-11 19:50:56,088 INFO L231 Difference]: Finished difference. Result has 178 places, 444 transitions, 4425 flow [2024-10-11 19:50:56,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=4297, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4425, PETRI_PLACES=178, PETRI_TRANSITIONS=444} [2024-10-11 19:50:56,089 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 82 predicate places. [2024-10-11 19:50:56,090 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 444 transitions, 4425 flow [2024-10-11 19:50:56,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:56,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:56,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:56,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 19:50:56,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:56,291 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:50:56,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:56,291 INFO L85 PathProgramCache]: Analyzing trace with hash 474757475, now seen corresponding path program 1 times [2024-10-11 19:50:56,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:56,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953174220] [2024-10-11 19:50:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:56,291 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 [2024-10-11 19:50:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:56,294 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:56,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 19:50:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:56,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:50:56,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:50:56,434 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:56,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:56,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953174220] [2024-10-11 19:50:56,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953174220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:56,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:56,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:50:56,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167887911] [2024-10-11 19:50:56,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:56,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:50:56,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:56,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:50:56,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:50:56,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 105 [2024-10-11 19:50:56,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 444 transitions, 4425 flow. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:56,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:56,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 105 [2024-10-11 19:50:56,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:59,573 INFO L124 PetriNetUnfolderBase]: 17394/31512 cut-off events. [2024-10-11 19:50:59,573 INFO L125 PetriNetUnfolderBase]: For 16026/17050 co-relation queries the response was YES. [2024-10-11 19:50:59,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66572 conditions, 31512 events. 17394/31512 cut-off events. For 16026/17050 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 276725 event pairs, 7563 based on Foata normal form. 220/26780 useless extension candidates. Maximal degree in co-relation 65612. Up to 11959 conditions per place. [2024-10-11 19:50:59,847 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 413 selfloop transitions, 45 changer transitions 0/509 dead transitions. [2024-10-11 19:50:59,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 509 transitions, 5599 flow [2024-10-11 19:50:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 407 transitions. [2024-10-11 19:50:59,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7752380952380953 [2024-10-11 19:50:59,849 INFO L175 Difference]: Start difference. First operand has 178 places, 444 transitions, 4425 flow. Second operand 5 states and 407 transitions. [2024-10-11 19:50:59,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 509 transitions, 5599 flow [2024-10-11 19:51:00,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 509 transitions, 5510 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:51:00,028 INFO L231 Difference]: Finished difference. Result has 181 places, 445 transitions, 4477 flow [2024-10-11 19:51:00,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=4336, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4477, PETRI_PLACES=181, PETRI_TRANSITIONS=445} [2024-10-11 19:51:00,029 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 85 predicate places. [2024-10-11 19:51:00,029 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 445 transitions, 4477 flow [2024-10-11 19:51:00,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:51:00,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:51:00,029 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:51:00,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-10-11 19:51:00,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:00,230 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:51:00,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:51:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash -824873245, now seen corresponding path program 1 times [2024-10-11 19:51:00,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:51:00,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897012913] [2024-10-11 19:51:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:51:00,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:00,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:51:00,232 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:51:00,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 19:51:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:51:00,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 19:51:00,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:51:00,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:51:00,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:51:00,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:51:00,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:51:00,487 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:51:00,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:51:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:51:00,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:51:00,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:51:00,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 62 [2024-10-11 19:51:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:51:01,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:51:01,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897012913] [2024-10-11 19:51:01,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897012913] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:51:01,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:51:01,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:51:01,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233616217] [2024-10-11 19:51:01,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:51:01,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:51:01,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:51:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:51:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:51:04,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-10-11 19:51:04,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 445 transitions, 4477 flow. Second operand has 12 states, 12 states have (on average 55.0) internal successors, (660), 12 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:51:04,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:51:04,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-10-11 19:51:04,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:51:10,716 INFO L124 PetriNetUnfolderBase]: 27075/47871 cut-off events. [2024-10-11 19:51:10,716 INFO L125 PetriNetUnfolderBase]: For 30556/32380 co-relation queries the response was YES. [2024-10-11 19:51:11,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105011 conditions, 47871 events. 27075/47871 cut-off events. For 30556/32380 co-relation queries the response was YES. Maximal size of possible extension queue 1808. Compared 435437 event pairs, 9868 based on Foata normal form. 0/41446 useless extension candidates. Maximal degree in co-relation 104024. Up to 9709 conditions per place. [2024-10-11 19:51:11,116 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 238 selfloop transitions, 332 changer transitions 0/615 dead transitions. [2024-10-11 19:51:11,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 615 transitions, 6382 flow [2024-10-11 19:51:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 19:51:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 19:51:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1344 transitions. [2024-10-11 19:51:11,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-10-11 19:51:11,119 INFO L175 Difference]: Start difference. First operand has 181 places, 445 transitions, 4477 flow. Second operand 21 states and 1344 transitions. [2024-10-11 19:51:11,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 615 transitions, 6382 flow [2024-10-11 19:51:11,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 615 transitions, 6333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:51:11,174 INFO L231 Difference]: Finished difference. Result has 204 places, 450 transitions, 5390 flow [2024-10-11 19:51:11,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=4432, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5390, PETRI_PLACES=204, PETRI_TRANSITIONS=450} [2024-10-11 19:51:11,175 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 108 predicate places. [2024-10-11 19:51:11,175 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 450 transitions, 5390 flow [2024-10-11 19:51:11,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.0) internal successors, (660), 12 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:51:11,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:51:11,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:51:11,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-11 19:51:11,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:11,376 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:51:11,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:51:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash 198733931, now seen corresponding path program 1 times [2024-10-11 19:51:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:51:11,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690677104] [2024-10-11 19:51:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:51:11,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:11,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:51:11,378 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:51:11,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 19:51:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:51:11,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:51:11,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:51:11,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:51:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:51:11,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:51:11,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:51:11,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690677104] [2024-10-11 19:51:11,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690677104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:51:11,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:51:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:51:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503026660] [2024-10-11 19:51:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:51:11,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:51:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:51:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:51:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:51:11,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 105 [2024-10-11 19:51:11,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 450 transitions, 5390 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:51:11,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:51:11,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 105 [2024-10-11 19:51:11,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand