./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.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 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:03:54,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:03:54,098 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:03:54,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:03:54,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:03:54,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:03:54,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:03:54,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:03:54,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:03:54,135 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:03:54,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:03:54,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:03:54,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:03:54,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:03:54,141 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:03:54,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:03:54,141 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:03:54,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:03:54,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:03:54,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:03:54,142 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:03:54,143 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:03:54,143 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:03:54,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:03:54,144 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:03:54,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:03:54,144 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:03:54,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:03:54,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:03:54,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:03:54,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:03:54,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:03:54,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:03:54,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:54,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:03:54,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:03:54,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:03:54,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:03:54,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:03:54,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:03:54,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:03:54,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:03:54,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2024-10-11 20:03:54,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:03:54,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:03:54,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:03:54,403 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:03:54,404 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:03:54,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-11 20:03:55,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:03:56,087 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:03:56,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-11 20:03:56,095 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/75d5014fa/12b50928b2ce4698b14816ef2a61db8c/FLAG25dd25977 [2024-10-11 20:03:56,107 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/75d5014fa/12b50928b2ce4698b14816ef2a61db8c [2024-10-11 20:03:56,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:03:56,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:03:56,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:56,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:03:56,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:03:56,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:56" (1/1) ... [2024-10-11 20:03:56,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502ab78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:56, skipping insertion in model container [2024-10-11 20:03:56,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:56" (1/1) ... [2024-10-11 20:03:56,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:56,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:56,414 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 20:03:56,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30bfa140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:56, skipping insertion in model container [2024-10-11 20:03:56,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:56,416 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 20:03:56,417 INFO L158 Benchmark]: Toolchain (without parser) took 306.18ms. Allocated memory is still 153.1MB. Free memory was 95.2MB in the beginning and 126.3MB in the end (delta: -31.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:03:56,418 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:03:56,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.09ms. Allocated memory is still 153.1MB. Free memory was 94.9MB in the beginning and 126.3MB in the end (delta: -31.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:03:56,420 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.09ms. Allocated memory is still 153.1MB. Free memory was 94.9MB in the beginning and 126.3MB in the end (delta: -31.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 124]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.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 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:03:58,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:03:58,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 20:03:58,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:03:58,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:03:58,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:03:58,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:03:58,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:03:58,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:03:58,477 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:03:58,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:03:58,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:03:58,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:03:58,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:03:58,479 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:03:58,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:03:58,480 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:03:58,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:03:58,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:03:58,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:03:58,481 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:03:58,487 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:03:58,487 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:03:58,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:03:58,488 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:03:58,488 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 20:03:58,488 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:03:58,489 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 20:03:58,489 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:03:58,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:03:58,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:03:58,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:03:58,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:03:58,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:03:58,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:03:58,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:58,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:03:58,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:03:58,493 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 20:03:58,493 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 20:03:58,494 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:03:58,494 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:03:58,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:03:58,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:03:58,495 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 20:03:58,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2024-10-11 20:03:58,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:03:58,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:03:58,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:03:58,874 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:03:58,875 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:03:58,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-11 20:04:00,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:04:00,569 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:04:00,570 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-11 20:04:00,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c6d268f6c/62659f031563400187e4fc3735b6ebb1/FLAGa9ef36d70 [2024-10-11 20:04:00,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c6d268f6c/62659f031563400187e4fc3735b6ebb1 [2024-10-11 20:04:00,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:04:00,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:04:00,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:04:00,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:04:00,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:04:00,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:04:00" (1/1) ... [2024-10-11 20:04:00,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dbff0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:00, skipping insertion in model container [2024-10-11 20:04:00,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:04:00" (1/1) ... [2024-10-11 20:04:00,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:04:01,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:04:01,254 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 20:04:01,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:04:01,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:04:01,304 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:04:01,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:04:01,356 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:04:01,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01 WrapperNode [2024-10-11 20:04:01,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:04:01,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:04:01,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:04:01,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:04:01,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,416 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 197 [2024-10-11 20:04:01,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:04:01,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:04:01,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:04:01,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:04:01,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,461 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 20:04:01,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:04:01,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:04:01,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:04:01,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:04:01,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (1/1) ... [2024-10-11 20:04:01,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:04:01,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:04:01,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 20:04:01,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 20:04:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:04:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:04:01,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:04:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:04:01,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:04:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 20:04:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 20:04:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 20:04:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 20:04:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 20:04:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:04:01,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:04:01,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 20:04:01,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 20:04:01,591 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 20:04:01,705 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:04:01,708 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:04:02,276 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:04:02,276 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:04:02,633 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:04:02,634 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 20:04:02,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:04:02 BoogieIcfgContainer [2024-10-11 20:04:02,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:04:02,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:04:02,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:04:02,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:04:02,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:04:00" (1/3) ... [2024-10-11 20:04:02,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4954aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:04:02, skipping insertion in model container [2024-10-11 20:04:02,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:04:01" (2/3) ... [2024-10-11 20:04:02,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4954aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:04:02, skipping insertion in model container [2024-10-11 20:04:02,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:04:02" (3/3) ... [2024-10-11 20:04:02,646 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2024-10-11 20:04:02,664 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:04:02,665 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-11 20:04:02,665 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:04:02,742 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 20:04:02,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 64 transitions, 142 flow [2024-10-11 20:04:02,811 INFO L124 PetriNetUnfolderBase]: 7/62 cut-off events. [2024-10-11 20:04:02,812 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 20:04:02,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 62 events. 7/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 179 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-10-11 20:04:02,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 64 transitions, 142 flow [2024-10-11 20:04:02,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 61 transitions, 134 flow [2024-10-11 20:04:02,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:04:02,843 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;@31b64efa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:04:02,844 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-10-11 20:04:02,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:04:02,847 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 20:04:02,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 20:04:02,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:02,848 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:04:02,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:02,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash 667349, now seen corresponding path program 1 times [2024-10-11 20:04:02,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:02,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160425376] [2024-10-11 20:04:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:02,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:02,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:02,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:02,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 20:04:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:02,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:04:02,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:03,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:04:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:03,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:03,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:03,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160425376] [2024-10-11 20:04:03,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160425376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:03,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:03,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:04:03,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840457860] [2024-10-11 20:04:03,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:03,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:04:03,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:04:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:04:03,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-11 20:04:03,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:03,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:03,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-11 20:04:03,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:03,365 INFO L124 PetriNetUnfolderBase]: 218/540 cut-off events. [2024-10-11 20:04:03,365 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-11 20:04:03,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 540 events. 218/540 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3143 event pairs, 141 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 804. Up to 347 conditions per place. [2024-10-11 20:04:03,373 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 30 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-11 20:04:03,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 192 flow [2024-10-11 20:04:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:04:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:04:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-10-11 20:04:03,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-10-11 20:04:03,388 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 134 flow. Second operand 3 states and 121 transitions. [2024-10-11 20:04:03,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 192 flow [2024-10-11 20:04:03,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:04:03,397 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 124 flow [2024-10-11 20:04:03,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-10-11 20:04:03,404 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-10-11 20:04:03,405 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 124 flow [2024-10-11 20:04:03,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:03,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:03,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:04:03,408 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 (2)] Ended with exit code 0 [2024-10-11 20:04:03,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:03,606 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:03,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:03,607 INFO L85 PathProgramCache]: Analyzing trace with hash 667350, now seen corresponding path program 1 times [2024-10-11 20:04:03,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:03,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749861355] [2024-10-11 20:04:03,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:03,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:03,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:03,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:03,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 20:04:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:03,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 20:04:03,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:03,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:04:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:03,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:03,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:03,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749861355] [2024-10-11 20:04:03,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749861355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:03,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:03,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:04:03,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524764291] [2024-10-11 20:04:03,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:03,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:04:03,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:03,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:04:03,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:04:04,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-11 20:04:04,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:04,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:04,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-11 20:04:04,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:04,355 INFO L124 PetriNetUnfolderBase]: 218/542 cut-off events. [2024-10-11 20:04:04,356 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-11 20:04:04,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 542 events. 218/542 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3142 event pairs, 141 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 885. Up to 351 conditions per place. [2024-10-11 20:04:04,361 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 33 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-11 20:04:04,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 198 flow [2024-10-11 20:04:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:04:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:04:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-10-11 20:04:04,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-10-11 20:04:04,366 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 124 flow. Second operand 3 states and 124 transitions. [2024-10-11 20:04:04,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 198 flow [2024-10-11 20:04:04,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:04,369 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 134 flow [2024-10-11 20:04:04,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2024-10-11 20:04:04,371 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-10-11 20:04:04,372 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 134 flow [2024-10-11 20:04:04,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:04,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:04,373 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 20:04:04,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 20:04:04,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:04,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:04,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 641344908, now seen corresponding path program 1 times [2024-10-11 20:04:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:04,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185071333] [2024-10-11 20:04:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:04,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:04,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:04,578 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:04,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 20:04:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:04,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:04:04,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:04,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:04:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:04,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:05,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:05,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185071333] [2024-10-11 20:04:05,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185071333] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:05,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:05,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:04:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344855424] [2024-10-11 20:04:05,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:05,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:04:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:04:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:04:05,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-11 20:04:05,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 134 flow. Second operand has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:05,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:05,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-11 20:04:05,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:06,244 INFO L124 PetriNetUnfolderBase]: 221/551 cut-off events. [2024-10-11 20:04:06,244 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-11 20:04:06,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 551 events. 221/551 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3212 event pairs, 141 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 920. Up to 354 conditions per place. [2024-10-11 20:04:06,249 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 33 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-10-11 20:04:06,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 254 flow [2024-10-11 20:04:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 20:04:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 20:04:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions. [2024-10-11 20:04:06,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-10-11 20:04:06,253 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 134 flow. Second operand 9 states and 308 transitions. [2024-10-11 20:04:06,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 254 flow [2024-10-11 20:04:06,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:06,256 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 206 flow [2024-10-11 20:04:06,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=206, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-10-11 20:04:06,257 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-10-11 20:04:06,257 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 206 flow [2024-10-11 20:04:06,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:06,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:06,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:06,264 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 20:04:06,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:06,459 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:06,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1999930623, now seen corresponding path program 1 times [2024-10-11 20:04:06,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:06,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369339566] [2024-10-11 20:04:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:06,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:06,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:06,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:06,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 20:04:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:06,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:04:06,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:06,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:04:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:06,545 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:06,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:06,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369339566] [2024-10-11 20:04:06,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369339566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:06,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:06,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:04:06,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166246839] [2024-10-11 20:04:06,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:06,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:04:06,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:06,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:04:06,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:04:06,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2024-10-11 20:04:06,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:06,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:06,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2024-10-11 20:04:06,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:06,818 INFO L124 PetriNetUnfolderBase]: 221/474 cut-off events. [2024-10-11 20:04:06,819 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-11 20:04:06,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 474 events. 221/474 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2291 event pairs, 141 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 847. Up to 349 conditions per place. [2024-10-11 20:04:06,821 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 38 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-10-11 20:04:06,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 272 flow [2024-10-11 20:04:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:04:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:04:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-10-11 20:04:06,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-10-11 20:04:06,827 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 206 flow. Second operand 4 states and 118 transitions. [2024-10-11 20:04:06,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 272 flow [2024-10-11 20:04:06,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 258 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:06,830 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 182 flow [2024-10-11 20:04:06,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2024-10-11 20:04:06,831 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2024-10-11 20:04:06,831 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 182 flow [2024-10-11 20:04:06,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:06,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:06,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:06,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:07,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:07,035 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:07,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1999930622, now seen corresponding path program 1 times [2024-10-11 20:04:07,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:07,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104755697] [2024-10-11 20:04:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:07,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:07,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:07,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:07,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 20:04:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:07,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:04:07,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:07,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:07,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-11 20:04:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:07,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:07,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104755697] [2024-10-11 20:04:07,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104755697] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:07,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:07,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:04:07,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640136169] [2024-10-11 20:04:07,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:07,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:04:07,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:07,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:04:07,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:04:08,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-11 20:04:08,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:08,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:08,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-11 20:04:08,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:08,539 INFO L124 PetriNetUnfolderBase]: 513/928 cut-off events. [2024-10-11 20:04:08,539 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-11 20:04:08,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 928 events. 513/928 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4777 event pairs, 169 based on Foata normal form. 0/789 useless extension candidates. Maximal degree in co-relation 1731. Up to 457 conditions per place. [2024-10-11 20:04:08,544 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 62 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2024-10-11 20:04:08,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 377 flow [2024-10-11 20:04:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2024-10-11 20:04:08,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6223958333333334 [2024-10-11 20:04:08,546 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 182 flow. Second operand 6 states and 239 transitions. [2024-10-11 20:04:08,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 377 flow [2024-10-11 20:04:08,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:08,549 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 203 flow [2024-10-11 20:04:08,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-10-11 20:04:08,550 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2024-10-11 20:04:08,550 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 203 flow [2024-10-11 20:04:08,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:08,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:08,551 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:08,557 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 (6)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:08,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:08,754 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:08,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2082923706, now seen corresponding path program 1 times [2024-10-11 20:04:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:08,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533069163] [2024-10-11 20:04:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:08,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:08,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:08,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:08,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 20:04:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:08,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:04:08,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:08,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:04:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:09,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:09,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:09,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533069163] [2024-10-11 20:04:09,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533069163] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:09,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:09,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-11 20:04:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870652077] [2024-10-11 20:04:09,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:09,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:04:09,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:04:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:04:13,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-11 20:04:13,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 203 flow. Second operand has 11 states, 11 states have (on average 29.818181818181817) internal successors, (328), 11 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:13,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:13,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-11 20:04:13,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:15,259 INFO L124 PetriNetUnfolderBase]: 1285/2545 cut-off events. [2024-10-11 20:04:15,260 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-10-11 20:04:15,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 2545 events. 1285/2545 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16274 event pairs, 697 based on Foata normal form. 0/2275 useless extension candidates. Maximal degree in co-relation 3348. Up to 705 conditions per place. [2024-10-11 20:04:15,276 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 128 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-10-11 20:04:15,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 158 transitions, 707 flow [2024-10-11 20:04:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:04:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:04:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 422 transitions. [2024-10-11 20:04:15,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.659375 [2024-10-11 20:04:15,280 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 203 flow. Second operand 10 states and 422 transitions. [2024-10-11 20:04:15,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 158 transitions, 707 flow [2024-10-11 20:04:15,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 158 transitions, 698 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:04:15,309 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 264 flow [2024-10-11 20:04:15,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-10-11 20:04:15,312 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-10-11 20:04:15,312 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 264 flow [2024-10-11 20:04:15,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.818181818181817) internal successors, (328), 11 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:15,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:15,313 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:15,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 20:04:15,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:15,514 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:15,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:15,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2126774872, now seen corresponding path program 1 times [2024-10-11 20:04:15,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:15,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140420351] [2024-10-11 20:04:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:15,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:15,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:15,516 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:15,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 20:04:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:15,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:04:15,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:15,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:15,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-11 20:04:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:15,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:15,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140420351] [2024-10-11 20:04:15,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140420351] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:15,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:15,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:04:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384061692] [2024-10-11 20:04:15,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:15,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:04:15,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:15,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:04:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:04:16,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-10-11 20:04:16,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:16,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:16,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-10-11 20:04:16,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:17,177 INFO L124 PetriNetUnfolderBase]: 2777/4625 cut-off events. [2024-10-11 20:04:17,178 INFO L125 PetriNetUnfolderBase]: For 2145/2185 co-relation queries the response was YES. [2024-10-11 20:04:17,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10600 conditions, 4625 events. 2777/4625 cut-off events. For 2145/2185 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 26979 event pairs, 558 based on Foata normal form. 0/4045 useless extension candidates. Maximal degree in co-relation 8159. Up to 3178 conditions per place. [2024-10-11 20:04:17,206 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 74 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-10-11 20:04:17,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 93 transitions, 528 flow [2024-10-11 20:04:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-10-11 20:04:17,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-10-11 20:04:17,209 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 264 flow. Second operand 6 states and 197 transitions. [2024-10-11 20:04:17,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 93 transitions, 528 flow [2024-10-11 20:04:17,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 520 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:04:17,220 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 319 flow [2024-10-11 20:04:17,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-10-11 20:04:17,222 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-10-11 20:04:17,222 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 319 flow [2024-10-11 20:04:17,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:17,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:17,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:17,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:17,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:17,428 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:17,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:17,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1505510862, now seen corresponding path program 1 times [2024-10-11 20:04:17,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:17,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743089257] [2024-10-11 20:04:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:17,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:17,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:17,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:17,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 20:04:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:17,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:04:17,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:17,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:04:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:17,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:18,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:18,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743089257] [2024-10-11 20:04:18,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743089257] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:18,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:18,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-11 20:04:18,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808033466] [2024-10-11 20:04:18,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:18,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:04:18,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:18,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:04:18,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:04:20,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 64 [2024-10-11 20:04:20,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 319 flow. Second operand has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:20,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:20,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 64 [2024-10-11 20:04:20,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:22,432 INFO L124 PetriNetUnfolderBase]: 2347/3954 cut-off events. [2024-10-11 20:04:22,433 INFO L125 PetriNetUnfolderBase]: For 1936/2001 co-relation queries the response was YES. [2024-10-11 20:04:22,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9695 conditions, 3954 events. 2347/3954 cut-off events. For 1936/2001 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21905 event pairs, 1167 based on Foata normal form. 0/3696 useless extension candidates. Maximal degree in co-relation 7733. Up to 1431 conditions per place. [2024-10-11 20:04:22,457 INFO L140 encePairwiseOnDemand]: 41/64 looper letters, 103 selfloop transitions, 38 changer transitions 0/147 dead transitions. [2024-10-11 20:04:22,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 147 transitions, 839 flow [2024-10-11 20:04:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:04:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:04:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 338 transitions. [2024-10-11 20:04:22,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528125 [2024-10-11 20:04:22,460 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 319 flow. Second operand 10 states and 338 transitions. [2024-10-11 20:04:22,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 147 transitions, 839 flow [2024-10-11 20:04:22,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 147 transitions, 814 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:04:22,464 INFO L231 Difference]: Finished difference. Result has 81 places, 99 transitions, 560 flow [2024-10-11 20:04:22,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=560, PETRI_PLACES=81, PETRI_TRANSITIONS=99} [2024-10-11 20:04:22,465 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 20 predicate places. [2024-10-11 20:04:22,465 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 99 transitions, 560 flow [2024-10-11 20:04:22,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:22,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:22,466 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:04:22,471 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 20:04:22,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:22,667 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:22,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:22,668 INFO L85 PathProgramCache]: Analyzing trace with hash -350320466, now seen corresponding path program 2 times [2024-10-11 20:04:22,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:22,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808651874] [2024-10-11 20:04:22,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:22,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:22,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:22,669 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:22,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 20:04:22,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:04:22,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:22,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:04:22,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:22,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:04:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:23,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:23,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:23,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808651874] [2024-10-11 20:04:23,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808651874] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:23,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:23,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:04:23,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051459570] [2024-10-11 20:04:23,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:23,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:04:23,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:23,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:04:23,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:04:24,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-11 20:04:24,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 99 transitions, 560 flow. Second operand has 14 states, 14 states have (on average 30.571428571428573) internal successors, (428), 14 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:24,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:24,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-11 20:04:24,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:27,162 INFO L124 PetriNetUnfolderBase]: 2162/3730 cut-off events. [2024-10-11 20:04:27,162 INFO L125 PetriNetUnfolderBase]: For 2660/2694 co-relation queries the response was YES. [2024-10-11 20:04:27,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10398 conditions, 3730 events. 2162/3730 cut-off events. For 2660/2694 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 21686 event pairs, 1566 based on Foata normal form. 6/3684 useless extension candidates. Maximal degree in co-relation 8203. Up to 3243 conditions per place. [2024-10-11 20:04:27,181 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 73 selfloop transitions, 29 changer transitions 0/117 dead transitions. [2024-10-11 20:04:27,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 117 transitions, 944 flow [2024-10-11 20:04:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 20:04:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 20:04:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 677 transitions. [2024-10-11 20:04:27,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037202380952381 [2024-10-11 20:04:27,185 INFO L175 Difference]: Start difference. First operand has 81 places, 99 transitions, 560 flow. Second operand 21 states and 677 transitions. [2024-10-11 20:04:27,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 117 transitions, 944 flow [2024-10-11 20:04:27,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 117 transitions, 919 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:04:27,192 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 803 flow [2024-10-11 20:04:27,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=803, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2024-10-11 20:04:27,193 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-10-11 20:04:27,193 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 803 flow [2024-10-11 20:04:27,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.571428571428573) internal successors, (428), 14 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:27,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:27,194 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:27,199 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 20:04:27,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:27,395 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:27,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:27,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1463770468, now seen corresponding path program 2 times [2024-10-11 20:04:27,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:27,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964028659] [2024-10-11 20:04:27,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:27,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:27,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:27,398 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:27,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 20:04:27,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:27,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:27,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:04:27,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:27,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:04:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 20:04:27,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 20:04:28,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:28,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964028659] [2024-10-11 20:04:28,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964028659] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:28,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:28,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:04:28,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625413047] [2024-10-11 20:04:28,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:28,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:04:28,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:28,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:04:28,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:04:30,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-11 20:04:30,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 803 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:30,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:30,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-11 20:04:30,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:31,067 INFO L124 PetriNetUnfolderBase]: 2114/3614 cut-off events. [2024-10-11 20:04:31,067 INFO L125 PetriNetUnfolderBase]: For 2364/2364 co-relation queries the response was YES. [2024-10-11 20:04:31,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10181 conditions, 3614 events. 2114/3614 cut-off events. For 2364/2364 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 21132 event pairs, 1116 based on Foata normal form. 52/3628 useless extension candidates. Maximal degree in co-relation 10115. Up to 2416 conditions per place. [2024-10-11 20:04:31,082 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 134 selfloop transitions, 20 changer transitions 0/169 dead transitions. [2024-10-11 20:04:31,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 169 transitions, 1374 flow [2024-10-11 20:04:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:04:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:04:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-10-11 20:04:31,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61875 [2024-10-11 20:04:31,085 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 803 flow. Second operand 5 states and 198 transitions. [2024-10-11 20:04:31,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 169 transitions, 1374 flow [2024-10-11 20:04:31,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 169 transitions, 1280 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-11 20:04:31,100 INFO L231 Difference]: Finished difference. Result has 96 places, 116 transitions, 741 flow [2024-10-11 20:04:31,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=741, PETRI_PLACES=96, PETRI_TRANSITIONS=116} [2024-10-11 20:04:31,101 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-10-11 20:04:31,101 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 116 transitions, 741 flow [2024-10-11 20:04:31,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:31,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:31,102 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:31,109 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 (11)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:31,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:31,303 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:31,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1067826132, now seen corresponding path program 2 times [2024-10-11 20:04:31,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:31,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060039725] [2024-10-11 20:04:31,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:31,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:31,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:31,305 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:31,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 20:04:31,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:31,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:31,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:04:31,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:31,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:04:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 20:04:31,554 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:31,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:31,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060039725] [2024-10-11 20:04:31,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060039725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:31,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:31,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:04:31,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396465016] [2024-10-11 20:04:31,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:31,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:31,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:31,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-10-11 20:04:31,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 116 transitions, 741 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:31,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:31,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-10-11 20:04:31,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:32,184 INFO L124 PetriNetUnfolderBase]: 2114/3522 cut-off events. [2024-10-11 20:04:32,185 INFO L125 PetriNetUnfolderBase]: For 3430/3430 co-relation queries the response was YES. [2024-10-11 20:04:32,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10194 conditions, 3522 events. 2114/3522 cut-off events. For 3430/3430 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19463 event pairs, 684 based on Foata normal form. 144/3614 useless extension candidates. Maximal degree in co-relation 10138. Up to 1686 conditions per place. [2024-10-11 20:04:32,197 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 61 selfloop transitions, 53 changer transitions 0/120 dead transitions. [2024-10-11 20:04:32,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 980 flow [2024-10-11 20:04:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:04:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:04:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-10-11 20:04:32,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-11 20:04:32,199 INFO L175 Difference]: Start difference. First operand has 96 places, 116 transitions, 741 flow. Second operand 5 states and 152 transitions. [2024-10-11 20:04:32,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 980 flow [2024-10-11 20:04:32,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 120 transitions, 894 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 20:04:32,206 INFO L231 Difference]: Finished difference. Result has 85 places, 107 transitions, 715 flow [2024-10-11 20:04:32,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=715, PETRI_PLACES=85, PETRI_TRANSITIONS=107} [2024-10-11 20:04:32,207 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 24 predicate places. [2024-10-11 20:04:32,207 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 107 transitions, 715 flow [2024-10-11 20:04:32,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:32,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:32,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:32,211 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 20:04:32,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:32,408 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:32,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:32,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1968742034, now seen corresponding path program 1 times [2024-10-11 20:04:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:32,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365583096] [2024-10-11 20:04:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:32,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:32,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:32,410 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:32,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 20:04:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:32,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:04:32,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:32,544 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:32,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:32,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365583096] [2024-10-11 20:04:32,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365583096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:32,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:32,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:04:32,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386832366] [2024-10-11 20:04:32,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:32,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:04:32,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:32,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:04:32,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:04:32,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-11 20:04:32,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 107 transitions, 715 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:32,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:32,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-11 20:04:32,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:32,989 INFO L124 PetriNetUnfolderBase]: 2139/3517 cut-off events. [2024-10-11 20:04:32,990 INFO L125 PetriNetUnfolderBase]: For 2475/2475 co-relation queries the response was YES. [2024-10-11 20:04:32,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10149 conditions, 3517 events. 2139/3517 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 19104 event pairs, 544 based on Foata normal form. 3/3467 useless extension candidates. Maximal degree in co-relation 10095. Up to 2642 conditions per place. [2024-10-11 20:04:33,005 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 127 selfloop transitions, 17 changer transitions 1/151 dead transitions. [2024-10-11 20:04:33,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 151 transitions, 1248 flow [2024-10-11 20:04:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:04:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:04:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-10-11 20:04:33,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2024-10-11 20:04:33,007 INFO L175 Difference]: Start difference. First operand has 85 places, 107 transitions, 715 flow. Second operand 3 states and 145 transitions. [2024-10-11 20:04:33,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 151 transitions, 1248 flow [2024-10-11 20:04:33,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 1088 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:04:33,017 INFO L231 Difference]: Finished difference. Result has 84 places, 123 transitions, 788 flow [2024-10-11 20:04:33,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=788, PETRI_PLACES=84, PETRI_TRANSITIONS=123} [2024-10-11 20:04:33,017 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-10-11 20:04:33,018 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 123 transitions, 788 flow [2024-10-11 20:04:33,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:33,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:33,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:33,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 20:04:33,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:33,219 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:33,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash 391690304, now seen corresponding path program 1 times [2024-10-11 20:04:33,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:33,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219725674] [2024-10-11 20:04:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:33,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:33,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:33,221 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:33,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 20:04:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:33,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:04:33,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:33,306 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:33,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219725674] [2024-10-11 20:04:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219725674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:33,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:33,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:04:33,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461470638] [2024-10-11 20:04:33,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:33,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:33,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:33,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-11 20:04:33,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 123 transitions, 788 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:33,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:33,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-11 20:04:33,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:33,815 INFO L124 PetriNetUnfolderBase]: 2342/3824 cut-off events. [2024-10-11 20:04:33,815 INFO L125 PetriNetUnfolderBase]: For 2169/2169 co-relation queries the response was YES. [2024-10-11 20:04:33,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10839 conditions, 3824 events. 2342/3824 cut-off events. For 2169/2169 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 21509 event pairs, 840 based on Foata normal form. 27/3848 useless extension candidates. Maximal degree in co-relation 10785. Up to 2134 conditions per place. [2024-10-11 20:04:33,832 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 232 selfloop transitions, 10 changer transitions 0/245 dead transitions. [2024-10-11 20:04:33,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 245 transitions, 1884 flow [2024-10-11 20:04:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:04:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:04:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-10-11 20:04:33,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.709375 [2024-10-11 20:04:33,834 INFO L175 Difference]: Start difference. First operand has 84 places, 123 transitions, 788 flow. Second operand 5 states and 227 transitions. [2024-10-11 20:04:33,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 245 transitions, 1884 flow [2024-10-11 20:04:33,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 245 transitions, 1840 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:33,844 INFO L231 Difference]: Finished difference. Result has 90 places, 126 transitions, 828 flow [2024-10-11 20:04:33,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=828, PETRI_PLACES=90, PETRI_TRANSITIONS=126} [2024-10-11 20:04:33,845 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-10-11 20:04:33,846 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 126 transitions, 828 flow [2024-10-11 20:04:33,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:33,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:33,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:33,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 20:04:34,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:34,047 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:34,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:34,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1122483587, now seen corresponding path program 1 times [2024-10-11 20:04:34,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:34,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916187324] [2024-10-11 20:04:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:34,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:34,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:34,051 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:34,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 20:04:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:34,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:04:34,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:34,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:34,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:34,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916187324] [2024-10-11 20:04:34,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916187324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:34,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:34,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:04:34,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946344819] [2024-10-11 20:04:34,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:34,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:34,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-11 20:04:34,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 126 transitions, 828 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:34,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:34,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-11 20:04:34,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:34,887 INFO L124 PetriNetUnfolderBase]: 2825/4903 cut-off events. [2024-10-11 20:04:34,888 INFO L125 PetriNetUnfolderBase]: For 5749/5749 co-relation queries the response was YES. [2024-10-11 20:04:34,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14951 conditions, 4903 events. 2825/4903 cut-off events. For 5749/5749 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 29453 event pairs, 787 based on Foata normal form. 84/4969 useless extension candidates. Maximal degree in co-relation 14894. Up to 1846 conditions per place. [2024-10-11 20:04:34,908 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 210 selfloop transitions, 50 changer transitions 0/266 dead transitions. [2024-10-11 20:04:34,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 266 transitions, 2125 flow [2024-10-11 20:04:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 20:04:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 20:04:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2024-10-11 20:04:34,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6852678571428571 [2024-10-11 20:04:34,910 INFO L175 Difference]: Start difference. First operand has 90 places, 126 transitions, 828 flow. Second operand 7 states and 307 transitions. [2024-10-11 20:04:34,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 266 transitions, 2125 flow [2024-10-11 20:04:34,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 266 transitions, 2069 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:34,921 INFO L231 Difference]: Finished difference. Result has 99 places, 147 transitions, 1184 flow [2024-10-11 20:04:34,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1184, PETRI_PLACES=99, PETRI_TRANSITIONS=147} [2024-10-11 20:04:34,922 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 38 predicate places. [2024-10-11 20:04:34,922 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 147 transitions, 1184 flow [2024-10-11 20:04:34,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:34,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:34,922 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:34,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 20:04:35,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:35,123 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:35,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:35,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1328117010, now seen corresponding path program 2 times [2024-10-11 20:04:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:35,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778927762] [2024-10-11 20:04:35,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:35,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:35,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:35,126 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:35,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 20:04:35,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:35,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:35,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:04:35,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:35,212 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:35,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:35,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778927762] [2024-10-11 20:04:35,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778927762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:35,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:35,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:04:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720537292] [2024-10-11 20:04:35,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:35,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:35,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:35,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-11 20:04:35,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 147 transitions, 1184 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:35,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:35,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-11 20:04:35,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:35,974 INFO L124 PetriNetUnfolderBase]: 3857/6277 cut-off events. [2024-10-11 20:04:35,975 INFO L125 PetriNetUnfolderBase]: For 12309/12309 co-relation queries the response was YES. [2024-10-11 20:04:35,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22221 conditions, 6277 events. 3857/6277 cut-off events. For 12309/12309 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 36840 event pairs, 1367 based on Foata normal form. 60/6337 useless extension candidates. Maximal degree in co-relation 22160. Up to 2983 conditions per place. [2024-10-11 20:04:35,996 INFO L140 encePairwiseOnDemand]: 49/64 looper letters, 236 selfloop transitions, 52 changer transitions 3/293 dead transitions. [2024-10-11 20:04:35,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 293 transitions, 2714 flow [2024-10-11 20:04:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2024-10-11 20:04:35,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-11 20:04:35,998 INFO L175 Difference]: Start difference. First operand has 99 places, 147 transitions, 1184 flow. Second operand 6 states and 270 transitions. [2024-10-11 20:04:35,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 293 transitions, 2714 flow [2024-10-11 20:04:36,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 293 transitions, 2607 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:36,031 INFO L231 Difference]: Finished difference. Result has 106 places, 182 transitions, 1756 flow [2024-10-11 20:04:36,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1756, PETRI_PLACES=106, PETRI_TRANSITIONS=182} [2024-10-11 20:04:36,031 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 45 predicate places. [2024-10-11 20:04:36,032 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 182 transitions, 1756 flow [2024-10-11 20:04:36,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:36,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:36,032 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:36,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-11 20:04:36,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:36,233 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:36,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:36,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1017754465, now seen corresponding path program 2 times [2024-10-11 20:04:36,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:36,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098979350] [2024-10-11 20:04:36,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:36,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:36,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:36,237 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:36,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 20:04:36,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:36,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:36,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:04:36,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:36,339 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:36,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:36,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098979350] [2024-10-11 20:04:36,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098979350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:36,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:36,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:04:36,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310215304] [2024-10-11 20:04:36,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:36,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:36,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:36,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-11 20:04:36,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 182 transitions, 1756 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:36,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:36,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-11 20:04:36,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:37,210 INFO L124 PetriNetUnfolderBase]: 3357/5909 cut-off events. [2024-10-11 20:04:37,211 INFO L125 PetriNetUnfolderBase]: For 20651/20681 co-relation queries the response was YES. [2024-10-11 20:04:37,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23684 conditions, 5909 events. 3357/5909 cut-off events. For 20651/20681 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 38150 event pairs, 1305 based on Foata normal form. 120/6019 useless extension candidates. Maximal degree in co-relation 23620. Up to 3309 conditions per place. [2024-10-11 20:04:37,242 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 196 selfloop transitions, 96 changer transitions 2/301 dead transitions. [2024-10-11 20:04:37,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 301 transitions, 3153 flow [2024-10-11 20:04:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 278 transitions. [2024-10-11 20:04:37,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2024-10-11 20:04:37,245 INFO L175 Difference]: Start difference. First operand has 106 places, 182 transitions, 1756 flow. Second operand 6 states and 278 transitions. [2024-10-11 20:04:37,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 301 transitions, 3153 flow [2024-10-11 20:04:37,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 301 transitions, 3113 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:37,297 INFO L231 Difference]: Finished difference. Result has 114 places, 206 transitions, 2388 flow [2024-10-11 20:04:37,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2388, PETRI_PLACES=114, PETRI_TRANSITIONS=206} [2024-10-11 20:04:37,300 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 53 predicate places. [2024-10-11 20:04:37,300 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 206 transitions, 2388 flow [2024-10-11 20:04:37,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:37,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:37,301 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:37,304 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 (17)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:37,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:37,501 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:37,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:37,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1141052828, now seen corresponding path program 3 times [2024-10-11 20:04:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:37,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764760933] [2024-10-11 20:04:37,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:04:37,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:37,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:37,503 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:37,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-11 20:04:37,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 20:04:37,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:37,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:04:37,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:37,602 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:37,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:37,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764760933] [2024-10-11 20:04:37,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764760933] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:37,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:37,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:04:37,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827449944] [2024-10-11 20:04:37,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:37,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:37,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:37,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:37,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-11 20:04:37,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 206 transitions, 2388 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:37,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:37,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-11 20:04:37,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:38,350 INFO L124 PetriNetUnfolderBase]: 3355/5708 cut-off events. [2024-10-11 20:04:38,350 INFO L125 PetriNetUnfolderBase]: For 24787/24865 co-relation queries the response was YES. [2024-10-11 20:04:38,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23858 conditions, 5708 events. 3355/5708 cut-off events. For 24787/24865 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35202 event pairs, 1146 based on Foata normal form. 162/5843 useless extension candidates. Maximal degree in co-relation 23790. Up to 2485 conditions per place. [2024-10-11 20:04:38,381 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 232 selfloop transitions, 55 changer transitions 0/294 dead transitions. [2024-10-11 20:04:38,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 294 transitions, 3290 flow [2024-10-11 20:04:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2024-10-11 20:04:38,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-11 20:04:38,383 INFO L175 Difference]: Start difference. First operand has 114 places, 206 transitions, 2388 flow. Second operand 6 states and 270 transitions. [2024-10-11 20:04:38,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 294 transitions, 3290 flow [2024-10-11 20:04:38,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 294 transitions, 3266 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-11 20:04:38,416 INFO L231 Difference]: Finished difference. Result has 122 places, 201 transitions, 2399 flow [2024-10-11 20:04:38,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2399, PETRI_PLACES=122, PETRI_TRANSITIONS=201} [2024-10-11 20:04:38,417 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 61 predicate places. [2024-10-11 20:04:38,418 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 201 transitions, 2399 flow [2024-10-11 20:04:38,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:38,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:38,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:38,422 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 (18)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:38,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:38,619 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:38,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:38,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1753859258, now seen corresponding path program 4 times [2024-10-11 20:04:38,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:38,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194612995] [2024-10-11 20:04:38,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:04:38,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:38,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:38,621 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:38,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-11 20:04:38,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:04:38,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:38,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:04:38,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:38,710 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:38,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194612995] [2024-10-11 20:04:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194612995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:38,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:38,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:04:38,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995922814] [2024-10-11 20:04:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:38,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:38,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:04:38,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-11 20:04:38,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 201 transitions, 2399 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:38,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:38,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-11 20:04:38,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:39,451 INFO L124 PetriNetUnfolderBase]: 3626/5875 cut-off events. [2024-10-11 20:04:39,451 INFO L125 PetriNetUnfolderBase]: For 31166/31166 co-relation queries the response was YES. [2024-10-11 20:04:39,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26468 conditions, 5875 events. 3626/5875 cut-off events. For 31166/31166 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 33215 event pairs, 1518 based on Foata normal form. 45/5920 useless extension candidates. Maximal degree in co-relation 26396. Up to 3967 conditions per place. [2024-10-11 20:04:39,476 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 182 selfloop transitions, 91 changer transitions 1/276 dead transitions. [2024-10-11 20:04:39,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 276 transitions, 3407 flow [2024-10-11 20:04:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:39,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2024-10-11 20:04:39,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-10-11 20:04:39,478 INFO L175 Difference]: Start difference. First operand has 122 places, 201 transitions, 2399 flow. Second operand 6 states and 249 transitions. [2024-10-11 20:04:39,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 276 transitions, 3407 flow [2024-10-11 20:04:39,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 276 transitions, 3281 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:39,531 INFO L231 Difference]: Finished difference. Result has 128 places, 211 transitions, 2688 flow [2024-10-11 20:04:39,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2688, PETRI_PLACES=128, PETRI_TRANSITIONS=211} [2024-10-11 20:04:39,531 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 67 predicate places. [2024-10-11 20:04:39,531 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 211 transitions, 2688 flow [2024-10-11 20:04:39,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:39,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:39,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:39,535 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 (19)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:39,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:39,732 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:39,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:39,733 INFO L85 PathProgramCache]: Analyzing trace with hash -608684058, now seen corresponding path program 1 times [2024-10-11 20:04:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:39,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692394530] [2024-10-11 20:04:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:39,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:39,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:39,734 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:39,735 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 (20)] Waiting until timeout for monitored process [2024-10-11 20:04:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:39,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:04:39,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:39,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:39,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:39,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692394530] [2024-10-11 20:04:39,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692394530] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:39,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:39,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-11 20:04:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390733131] [2024-10-11 20:04:39,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:39,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:04:39,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:39,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:04:39,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:04:39,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-11 20:04:39,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 211 transitions, 2688 flow. Second operand has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:39,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:39,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-11 20:04:39,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:42,263 INFO L124 PetriNetUnfolderBase]: 7105/11864 cut-off events. [2024-10-11 20:04:42,263 INFO L125 PetriNetUnfolderBase]: For 53475/53517 co-relation queries the response was YES. [2024-10-11 20:04:42,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49842 conditions, 11864 events. 7105/11864 cut-off events. For 53475/53517 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 78801 event pairs, 1003 based on Foata normal form. 53/11899 useless extension candidates. Maximal degree in co-relation 49767. Up to 2353 conditions per place. [2024-10-11 20:04:42,339 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 672 selfloop transitions, 164 changer transitions 0/843 dead transitions. [2024-10-11 20:04:42,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 843 transitions, 8685 flow [2024-10-11 20:04:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:04:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:04:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 947 transitions. [2024-10-11 20:04:42,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725852272727273 [2024-10-11 20:04:42,342 INFO L175 Difference]: Start difference. First operand has 128 places, 211 transitions, 2688 flow. Second operand 22 states and 947 transitions. [2024-10-11 20:04:42,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 843 transitions, 8685 flow [2024-10-11 20:04:42,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 843 transitions, 8389 flow, removed 71 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:42,435 INFO L231 Difference]: Finished difference. Result has 160 places, 335 transitions, 4037 flow [2024-10-11 20:04:42,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4037, PETRI_PLACES=160, PETRI_TRANSITIONS=335} [2024-10-11 20:04:42,436 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 99 predicate places. [2024-10-11 20:04:42,436 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 335 transitions, 4037 flow [2024-10-11 20:04:42,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:42,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:42,436 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:42,440 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 (20)] Ended with exit code 0 [2024-10-11 20:04:42,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:42,637 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:42,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1519702470, now seen corresponding path program 2 times [2024-10-11 20:04:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:42,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530576873] [2024-10-11 20:04:42,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:42,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:42,640 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:42,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-10-11 20:04:42,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:04:42,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:42,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:04:42,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:42,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:42,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:42,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530576873] [2024-10-11 20:04:42,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530576873] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:42,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:42,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-11 20:04:42,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102422102] [2024-10-11 20:04:42,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:42,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:04:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:04:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:04:42,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-11 20:04:42,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 335 transitions, 4037 flow. Second operand has 10 states, 10 states have (on average 30.8) internal successors, (308), 10 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:42,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:42,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-11 20:04:42,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:46,927 INFO L124 PetriNetUnfolderBase]: 10132/17247 cut-off events. [2024-10-11 20:04:46,927 INFO L125 PetriNetUnfolderBase]: For 88243/88275 co-relation queries the response was YES. [2024-10-11 20:04:46,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79751 conditions, 17247 events. 10132/17247 cut-off events. For 88243/88275 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 127626 event pairs, 890 based on Foata normal form. 423/17611 useless extension candidates. Maximal degree in co-relation 79663. Up to 3579 conditions per place. [2024-10-11 20:04:47,039 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 981 selfloop transitions, 350 changer transitions 0/1338 dead transitions. [2024-10-11 20:04:47,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1338 transitions, 14960 flow [2024-10-11 20:04:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 20:04:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 20:04:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1143 transitions. [2024-10-11 20:04:47,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.744140625 [2024-10-11 20:04:47,042 INFO L175 Difference]: Start difference. First operand has 160 places, 335 transitions, 4037 flow. Second operand 24 states and 1143 transitions. [2024-10-11 20:04:47,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1338 transitions, 14960 flow [2024-10-11 20:04:47,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1338 transitions, 14539 flow, removed 174 selfloop flow, removed 3 redundant places. [2024-10-11 20:04:47,297 INFO L231 Difference]: Finished difference. Result has 201 places, 574 transitions, 8240 flow [2024-10-11 20:04:47,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=3784, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8240, PETRI_PLACES=201, PETRI_TRANSITIONS=574} [2024-10-11 20:04:47,298 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 140 predicate places. [2024-10-11 20:04:47,298 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 574 transitions, 8240 flow [2024-10-11 20:04:47,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.8) internal successors, (308), 10 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:47,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:47,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:47,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-10-11 20:04:47,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:47,499 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:47,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:47,499 INFO L85 PathProgramCache]: Analyzing trace with hash -482765724, now seen corresponding path program 3 times [2024-10-11 20:04:47,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:47,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83688367] [2024-10-11 20:04:47,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:04:47,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:47,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:47,501 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:47,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-10-11 20:04:47,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 20:04:47,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:47,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:04:47,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:47,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:47,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:47,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83688367] [2024-10-11 20:04:47,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83688367] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:47,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:47,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-11 20:04:47,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121151766] [2024-10-11 20:04:47,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:47,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:04:47,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:47,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:04:47,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:04:47,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-11 20:04:47,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 574 transitions, 8240 flow. Second operand has 10 states, 10 states have (on average 28.9) internal successors, (289), 10 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:47,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:47,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-11 20:04:47,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:54,690 INFO L124 PetriNetUnfolderBase]: 14924/24868 cut-off events. [2024-10-11 20:04:54,690 INFO L125 PetriNetUnfolderBase]: For 281899/281899 co-relation queries the response was YES. [2024-10-11 20:04:54,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145788 conditions, 24868 events. 14924/24868 cut-off events. For 281899/281899 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 186439 event pairs, 4118 based on Foata normal form. 90/24958 useless extension candidates. Maximal degree in co-relation 145679. Up to 10471 conditions per place. [2024-10-11 20:04:54,908 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 788 selfloop transitions, 560 changer transitions 0/1350 dead transitions. [2024-10-11 20:04:54,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1350 transitions, 20681 flow [2024-10-11 20:04:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:04:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:04:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 907 transitions. [2024-10-11 20:04:54,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6441761363636364 [2024-10-11 20:04:54,910 INFO L175 Difference]: Start difference. First operand has 201 places, 574 transitions, 8240 flow. Second operand 22 states and 907 transitions. [2024-10-11 20:04:54,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1350 transitions, 20681 flow [2024-10-11 20:04:56,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1350 transitions, 19633 flow, removed 452 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:56,501 INFO L231 Difference]: Finished difference. Result has 237 places, 927 transitions, 15185 flow [2024-10-11 20:04:56,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=7637, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=15185, PETRI_PLACES=237, PETRI_TRANSITIONS=927} [2024-10-11 20:04:56,502 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 176 predicate places. [2024-10-11 20:04:56,502 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 927 transitions, 15185 flow [2024-10-11 20:04:56,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.9) internal successors, (289), 10 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:56,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:56,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:56,507 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 (22)] Ended with exit code 0 [2024-10-11 20:04:56,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:56,703 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:04:56,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash -627290892, now seen corresponding path program 4 times [2024-10-11 20:04:56,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:56,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344973771] [2024-10-11 20:04:56,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:04:56,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:56,705 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:56,707 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 (23)] Waiting until timeout for monitored process [2024-10-11 20:04:56,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:04:56,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:56,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:04:56,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:56,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:56,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:56,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344973771] [2024-10-11 20:04:56,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344973771] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 20:04:56,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 20:04:56,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-10-11 20:04:56,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41393693] [2024-10-11 20:04:56,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:56,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:04:56,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:56,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:04:56,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:04:56,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-11 20:04:56,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 927 transitions, 15185 flow. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:56,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:56,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-11 20:04:56,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:05:04,604 INFO L124 PetriNetUnfolderBase]: 17730/29899 cut-off events. [2024-10-11 20:05:04,604 INFO L125 PetriNetUnfolderBase]: For 442227/442907 co-relation queries the response was YES. [2024-10-11 20:05:04,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192319 conditions, 29899 events. 17730/29899 cut-off events. For 442227/442907 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 236851 event pairs, 2108 based on Foata normal form. 544/30224 useless extension candidates. Maximal degree in co-relation 192195. Up to 14705 conditions per place. [2024-10-11 20:05:04,946 INFO L140 encePairwiseOnDemand]: 46/64 looper letters, 876 selfloop transitions, 772 changer transitions 3/1663 dead transitions. [2024-10-11 20:05:04,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1663 transitions, 30261 flow [2024-10-11 20:05:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:05:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:05:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2024-10-11 20:05:04,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.771875 [2024-10-11 20:05:04,948 INFO L175 Difference]: Start difference. First operand has 237 places, 927 transitions, 15185 flow. Second operand 5 states and 247 transitions. [2024-10-11 20:05:04,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1663 transitions, 30261 flow [2024-10-11 20:05:09,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 1663 transitions, 29449 flow, removed 406 selfloop flow, removed 0 redundant places. [2024-10-11 20:05:09,159 INFO L231 Difference]: Finished difference. Result has 245 places, 1421 transitions, 27344 flow [2024-10-11 20:05:09,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=14745, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=27344, PETRI_PLACES=245, PETRI_TRANSITIONS=1421} [2024-10-11 20:05:09,160 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 184 predicate places. [2024-10-11 20:05:09,160 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 1421 transitions, 27344 flow [2024-10-11 20:05:09,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:05:09,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:05:09,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:05:09,162 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 (23)] Forceful destruction successful, exit code 0 [2024-10-11 20:05:09,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:05:09,361 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 20:05:09,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:05:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash 152251518, now seen corresponding path program 5 times [2024-10-11 20:05:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:05:09,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753049137] [2024-10-11 20:05:09,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 20:05:09,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:05:09,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:05:09,363 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:05:09,364 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 (24)] Waiting until timeout for monitored process [2024-10-11 20:05:09,438 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:05:09,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:05:09,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:05:09,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:05:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:05:09,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:05:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:05:09,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:05:09,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753049137] [2024-10-11 20:05:09,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753049137] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:05:09,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:05:09,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-11 20:05:09,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271585157] [2024-10-11 20:05:09,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:05:09,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:05:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:05:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:05:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:05:09,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-11 20:05:09,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 1421 transitions, 27344 flow. Second operand has 10 states, 10 states have (on average 30.2) internal successors, (302), 10 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:05:09,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:05:09,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-11 20:05:09,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:05:21,437 INFO L124 PetriNetUnfolderBase]: 20172/33302 cut-off events. [2024-10-11 20:05:21,438 INFO L125 PetriNetUnfolderBase]: For 572943/573044 co-relation queries the response was YES. [2024-10-11 20:05:21,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240459 conditions, 33302 events. 20172/33302 cut-off events. For 572943/573044 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 258306 event pairs, 3732 based on Foata normal form. 1080/34370 useless extension candidates. Maximal degree in co-relation 240331. Up to 11859 conditions per place. [2024-10-11 20:05:21,814 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 1514 selfloop transitions, 905 changer transitions 1/2425 dead transitions. [2024-10-11 20:05:21,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 2425 transitions, 48618 flow [2024-10-11 20:05:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 20:05:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 20:05:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 937 transitions. [2024-10-11 20:05:21,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6365489130434783 [2024-10-11 20:05:21,816 INFO L175 Difference]: Start difference. First operand has 245 places, 1421 transitions, 27344 flow. Second operand 23 states and 937 transitions. [2024-10-11 20:05:21,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 2425 transitions, 48618 flow