./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.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/popl20-more-buffer-mult2.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 dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:58:20,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:58:20,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:58:20,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:58:20,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:58:20,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:58:20,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:58:20,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:58:20,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:58:20,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:58:20,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:58:20,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:58:20,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:58:20,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:58:20,647 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:58:20,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:58:20,651 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:58:20,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:58:20,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:58:20,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:58:20,652 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:58:20,652 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:58:20,652 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:58:20,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:58:20,653 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:58:20,653 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:58:20,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:58:20,654 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:58:20,654 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:58:20,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:58:20,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:58:20,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:58:20,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:58:20,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:58:20,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:58:20,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:58:20,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:58:20,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:58:20,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:58:20,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:58:20,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:58:20,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:58:20,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2024-10-11 19:58:20,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:58:20,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:58:20,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:58:20,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:58:20,966 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:58:20,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2024-10-11 19:58:22,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:58:22,535 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:58:22,536 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2024-10-11 19:58:22,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/13831d9b1/ff25cb9b9ab04e02b2758005f7d47b0a/FLAG6385cd7f8 [2024-10-11 19:58:22,554 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/13831d9b1/ff25cb9b9ab04e02b2758005f7d47b0a [2024-10-11 19:58:22,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:58:22,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:58:22,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:58:22,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:58:22,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:58:22,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:58:22" (1/1) ... [2024-10-11 19:58:22,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b146498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:22, skipping insertion in model container [2024-10-11 19:58:22,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:58:22" (1/1) ... [2024-10-11 19:58:22,589 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:58:22,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:58:22,857 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:58:22,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10c88785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:22, skipping insertion in model container [2024-10-11 19:58:22,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:58:22,859 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:58:22,861 INFO L158 Benchmark]: Toolchain (without parser) took 301.91ms. Allocated memory is still 165.7MB. Free memory was 113.7MB in the beginning and 101.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:58:22,862 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 60.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:58:22,862 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.80ms. Allocated memory is still 165.7MB. Free memory was 113.3MB in the beginning and 101.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:58:22,864 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 60.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.80ms. Allocated memory is still 165.7MB. Free memory was 113.3MB in the beginning and 101.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 157]: 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/popl20-more-buffer-mult2.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 dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:58:24,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:58:24,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:58:24,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:58:24,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:58:24,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:58:24,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:58:24,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:58:24,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:58:24,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:58:24,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:58:24,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:58:24,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:58:24,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:58:24,938 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:58:24,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:58:24,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:58:24,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:58:24,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:58:24,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:58:24,940 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:58:24,944 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:58:24,944 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:58:24,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:58:24,945 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:58:24,945 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:58:24,945 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:58:24,946 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:58:24,946 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:58:24,946 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:58:24,946 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:58:24,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:58:24,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:58:24,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:58:24,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:58:24,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:58:24,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:58:24,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:58:24,948 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:58:24,948 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:58:24,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:58:24,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:58:24,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:58:24,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:58:24,950 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:58:24,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2024-10-11 19:58:25,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:58:25,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:58:25,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:58:25,325 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:58:25,326 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:58:25,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2024-10-11 19:58:26,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:58:27,070 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:58:27,071 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2024-10-11 19:58:27,081 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d97b9b24b/889b0aad20a54b3c938c7231abdd0d9a/FLAG7dcd4a19c [2024-10-11 19:58:27,432 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d97b9b24b/889b0aad20a54b3c938c7231abdd0d9a [2024-10-11 19:58:27,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:58:27,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:58:27,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:58:27,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:58:27,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:58:27,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:27,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d3b8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27, skipping insertion in model container [2024-10-11 19:58:27,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:27,470 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:58:27,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:58:27,741 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:58:27,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:58:27,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:58:27,791 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:58:27,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:58:27,853 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:58:27,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27 WrapperNode [2024-10-11 19:58:27,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:58:27,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:58:27,854 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:58:27,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:58:27,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:27,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:27,928 INFO L138 Inliner]: procedures = 28, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 284 [2024-10-11 19:58:27,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:58:27,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:58:27,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:58:27,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:58:27,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:27,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:27,950 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:27,980 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-11 19:58:27,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:27,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:27,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:28,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:28,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:28,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:28,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:58:28,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:58:28,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:58:28,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:58:28,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (1/1) ... [2024-10-11 19:58:28,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:58:28,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:58:28,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:58:28,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:58:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:58:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:58:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:58:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:58:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:58:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:58:28,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:58:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:58:28,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:58:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:58:28,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:58:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 19:58:28,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 19:58:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:58:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:58:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:58:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:58:28,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:58:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:58:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:58:28,126 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:58:28,281 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:58:28,283 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:58:28,858 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:58:28,859 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:58:29,258 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:58:29,258 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 19:58:29,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:58:29 BoogieIcfgContainer [2024-10-11 19:58:29,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:58:29,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:58:29,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:58:29,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:58:29,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:58:27" (1/3) ... [2024-10-11 19:58:29,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536d01ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:58:29, skipping insertion in model container [2024-10-11 19:58:29,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:58:27" (2/3) ... [2024-10-11 19:58:29,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536d01ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:58:29, skipping insertion in model container [2024-10-11 19:58:29,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:58:29" (3/3) ... [2024-10-11 19:58:29,269 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2024-10-11 19:58:29,286 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:58:29,287 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-11 19:58:29,287 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:58:29,363 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 19:58:29,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 64 transitions, 156 flow [2024-10-11 19:58:29,434 INFO L124 PetriNetUnfolderBase]: 6/60 cut-off events. [2024-10-11 19:58:29,434 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:58:29,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 60 events. 6/60 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-10-11 19:58:29,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 64 transitions, 156 flow [2024-10-11 19:58:29,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 59 transitions, 142 flow [2024-10-11 19:58:29,454 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:58:29,462 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;@2afcf4ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:58:29,462 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-11 19:58:29,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:58:29,468 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:58:29,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:58:29,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:29,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:58:29,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:29,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:29,474 INFO L85 PathProgramCache]: Analyzing trace with hash 833690, now seen corresponding path program 1 times [2024-10-11 19:58:29,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:29,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624689370] [2024-10-11 19:58:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:29,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:29,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:29,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:29,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:58:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:29,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:58:29,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:29,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:58:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:29,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:29,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:29,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624689370] [2024-10-11 19:58:29,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624689370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:29,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:29,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:58:29,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79292160] [2024-10-11 19:58:29,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:29,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:58:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:29,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:58:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:58:29,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-11 19:58:29,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:29,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:29,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-11 19:58:29,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:30,992 INFO L124 PetriNetUnfolderBase]: 4566/6759 cut-off events. [2024-10-11 19:58:30,993 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-10-11 19:58:31,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13365 conditions, 6759 events. 4566/6759 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 49865 event pairs, 4408 based on Foata normal form. 1/3862 useless extension candidates. Maximal degree in co-relation 12180. Up to 6127 conditions per place. [2024-10-11 19:58:31,060 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 34 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-10-11 19:58:31,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 206 flow [2024-10-11 19:58:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:58:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:58:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-10-11 19:58:31,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-10-11 19:58:31,073 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 142 flow. Second operand 3 states and 111 transitions. [2024-10-11 19:58:31,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 206 flow [2024-10-11 19:58:31,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 190 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 19:58:31,118 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 122 flow [2024-10-11 19:58:31,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-10-11 19:58:31,126 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2024-10-11 19:58:31,126 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 122 flow [2024-10-11 19:58:31,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:31,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:31,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:58:31,132 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 19:58:31,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:31,330 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:31,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:31,331 INFO L85 PathProgramCache]: Analyzing trace with hash 833691, now seen corresponding path program 1 times [2024-10-11 19:58:31,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:31,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587689932] [2024-10-11 19:58:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:31,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:31,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:31,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:31,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:58:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:31,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:58:31,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:31,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:31,533 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:31,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:31,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587689932] [2024-10-11 19:58:31,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587689932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:31,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:31,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:58:31,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459308691] [2024-10-11 19:58:31,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:31,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:31,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:31,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-11 19:58:31,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:31,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:31,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-11 19:58:31,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:32,669 INFO L124 PetriNetUnfolderBase]: 4568/6765 cut-off events. [2024-10-11 19:58:32,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:58:32,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13067 conditions, 6765 events. 4568/6765 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 49862 event pairs, 4408 based on Foata normal form. 0/3865 useless extension candidates. Maximal degree in co-relation 13031. Up to 6136 conditions per place. [2024-10-11 19:58:32,744 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 37 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2024-10-11 19:58:32,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 224 flow [2024-10-11 19:58:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:58:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:58:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-10-11 19:58:32,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-10-11 19:58:32,747 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 122 flow. Second operand 4 states and 142 transitions. [2024-10-11 19:58:32,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 224 flow [2024-10-11 19:58:32,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:58:32,750 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 174 flow [2024-10-11 19:58:32,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-10-11 19:58:32,751 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-10-11 19:58:32,751 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 174 flow [2024-10-11 19:58:32,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:32,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:32,752 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:58:32,756 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 (3)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:32,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:32,956 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:32,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash 801203502, now seen corresponding path program 1 times [2024-10-11 19:58:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696898077] [2024-10-11 19:58:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:32,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:32,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:32,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:32,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:58:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:33,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:58:33,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:33,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:33,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:33,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696898077] [2024-10-11 19:58:33,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696898077] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:33,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:33,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:58:33,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022585350] [2024-10-11 19:58:33,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:33,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:58:33,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:58:33,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:58:33,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-11 19:58:33,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 174 flow. Second operand has 10 states, 10 states have (on average 25.0) internal successors, (250), 10 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:33,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:33,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-11 19:58:33,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:35,285 INFO L124 PetriNetUnfolderBase]: 4574/6783 cut-off events. [2024-10-11 19:58:35,285 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:58:35,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13145 conditions, 6783 events. 4574/6783 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 49991 event pairs, 4408 based on Foata normal form. 0/3881 useless extension candidates. Maximal degree in co-relation 13042. Up to 6139 conditions per place. [2024-10-11 19:58:35,328 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 37 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2024-10-11 19:58:35,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 376 flow [2024-10-11 19:58:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:58:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:58:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 308 transitions. [2024-10-11 19:58:35,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-10-11 19:58:35,332 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 174 flow. Second operand 10 states and 308 transitions. [2024-10-11 19:58:35,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 376 flow [2024-10-11 19:58:35,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:58:35,336 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 336 flow [2024-10-11 19:58:35,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=336, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-10-11 19:58:35,337 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2024-10-11 19:58:35,337 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 336 flow [2024-10-11 19:58:35,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.0) internal successors, (250), 10 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:35,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:35,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:35,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:58:35,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:35,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:35,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1752571884, now seen corresponding path program 1 times [2024-10-11 19:58:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:35,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705523004] [2024-10-11 19:58:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:35,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:35,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:35,544 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:35,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:58:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:35,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:58:35,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:35,679 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:35,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:35,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705523004] [2024-10-11 19:58:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705523004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:58:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320250806] [2024-10-11 19:58:35,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:35,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:35,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:35,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:35,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-11 19:58:35,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:35,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:35,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-11 19:58:35,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:36,952 INFO L124 PetriNetUnfolderBase]: 5243/7895 cut-off events. [2024-10-11 19:58:36,952 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-11 19:58:36,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15363 conditions, 7895 events. 5243/7895 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 59754 event pairs, 5051 based on Foata normal form. 259/4966 useless extension candidates. Maximal degree in co-relation 15275. Up to 6154 conditions per place. [2024-10-11 19:58:37,039 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 95 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2024-10-11 19:58:37,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 117 transitions, 688 flow [2024-10-11 19:58:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:58:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:58:37,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2024-10-11 19:58:37,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68359375 [2024-10-11 19:58:37,042 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 336 flow. Second operand 4 states and 175 transitions. [2024-10-11 19:58:37,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 117 transitions, 688 flow [2024-10-11 19:58:37,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 117 transitions, 594 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-10-11 19:58:37,047 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 291 flow [2024-10-11 19:58:37,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-10-11 19:58:37,048 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2024-10-11 19:58:37,048 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 291 flow [2024-10-11 19:58:37,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:37,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:37,049 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:37,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:58:37,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:37,250 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:37,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1137220055, now seen corresponding path program 1 times [2024-10-11 19:58:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975961387] [2024-10-11 19:58:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:37,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:37,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:37,259 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:37,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:58:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:37,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:58:37,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:37,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:58:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:37,360 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:37,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:37,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975961387] [2024-10-11 19:58:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975961387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:37,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:58:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147405818] [2024-10-11 19:58:37,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:37,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:37,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:37,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-11 19:58:37,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:37,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:37,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-11 19:58:37,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:38,036 INFO L124 PetriNetUnfolderBase]: 3409/5287 cut-off events. [2024-10-11 19:58:38,037 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2024-10-11 19:58:38,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11499 conditions, 5287 events. 3409/5287 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 39099 event pairs, 3251 based on Foata normal form. 0/3453 useless extension candidates. Maximal degree in co-relation 11423. Up to 4643 conditions per place. [2024-10-11 19:58:38,081 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 52 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-10-11 19:58:38,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 403 flow [2024-10-11 19:58:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:58:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:58:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-11 19:58:38,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-10-11 19:58:38,083 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 291 flow. Second operand 4 states and 132 transitions. [2024-10-11 19:58:38,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 403 flow [2024-10-11 19:58:38,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 399 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:58:38,087 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 295 flow [2024-10-11 19:58:38,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2024-10-11 19:58:38,089 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2024-10-11 19:58:38,089 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 295 flow [2024-10-11 19:58:38,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:38,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:38,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:38,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:58:38,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:38,293 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:38,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:38,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1799809182, now seen corresponding path program 1 times [2024-10-11 19:58:38,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:38,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537039261] [2024-10-11 19:58:38,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:38,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:38,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:38,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:38,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:58:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:38,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:58:38,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:38,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:38,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:58:38,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:58:38,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:58:38,618 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:58:38,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:58:38,710 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 19:58:38,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:39,505 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 19:58:39,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:39,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537039261] [2024-10-11 19:58:39,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537039261] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:39,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:39,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:58:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394505273] [2024-10-11 19:58:39,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:39,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:58:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:39,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:58:39,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:58:39,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-10-11 19:58:39,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 295 flow. Second operand has 10 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:39,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:39,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-10-11 19:58:39,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:45,995 INFO L124 PetriNetUnfolderBase]: 7175/11121 cut-off events. [2024-10-11 19:58:45,996 INFO L125 PetriNetUnfolderBase]: For 1137/1137 co-relation queries the response was YES. [2024-10-11 19:58:46,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24125 conditions, 11121 events. 7175/11121 cut-off events. For 1137/1137 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 88914 event pairs, 6839 based on Foata normal form. 0/7511 useless extension candidates. Maximal degree in co-relation 22455. Up to 4009 conditions per place. [2024-10-11 19:58:46,095 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 101 selfloop transitions, 46 changer transitions 0/164 dead transitions. [2024-10-11 19:58:46,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 164 transitions, 934 flow [2024-10-11 19:58:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:58:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:58:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 427 transitions. [2024-10-11 19:58:46,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-10-11 19:58:46,099 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 295 flow. Second operand 14 states and 427 transitions. [2024-10-11 19:58:46,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 164 transitions, 934 flow [2024-10-11 19:58:46,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 164 transitions, 901 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:58:46,105 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 588 flow [2024-10-11 19:58:46,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=588, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-10-11 19:58:46,106 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2024-10-11 19:58:46,107 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 588 flow [2024-10-11 19:58:46,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:46,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:46,107 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:46,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 19:58:46,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:46,308 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:46,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1799809183, now seen corresponding path program 1 times [2024-10-11 19:58:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:46,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433947763] [2024-10-11 19:58:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:46,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:46,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:46,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:46,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:58:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:46,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:58:46,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:46,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:58:46,411 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 19:58:46,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 19:58:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:46,456 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:46,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:46,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433947763] [2024-10-11 19:58:46,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433947763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:46,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:46,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:58:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074301856] [2024-10-11 19:58:46,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:46,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:46,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:46,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-11 19:58:46,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 588 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:46,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:46,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-11 19:58:46,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:47,068 INFO L124 PetriNetUnfolderBase]: 4405/7020 cut-off events. [2024-10-11 19:58:47,069 INFO L125 PetriNetUnfolderBase]: For 2984/2984 co-relation queries the response was YES. [2024-10-11 19:58:47,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15592 conditions, 7020 events. 4405/7020 cut-off events. For 2984/2984 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 54414 event pairs, 4176 based on Foata normal form. 0/5608 useless extension candidates. Maximal degree in co-relation 15493. Up to 6100 conditions per place. [2024-10-11 19:58:47,125 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 67 selfloop transitions, 15 changer transitions 0/101 dead transitions. [2024-10-11 19:58:47,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 101 transitions, 744 flow [2024-10-11 19:58:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:58:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:58:47,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-10-11 19:58:47,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-10-11 19:58:47,127 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 588 flow. Second operand 5 states and 154 transitions. [2024-10-11 19:58:47,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 101 transitions, 744 flow [2024-10-11 19:58:47,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 101 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:58:47,137 INFO L231 Difference]: Finished difference. Result has 90 places, 101 transitions, 607 flow [2024-10-11 19:58:47,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=607, PETRI_PLACES=90, PETRI_TRANSITIONS=101} [2024-10-11 19:58:47,138 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-10-11 19:58:47,139 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 607 flow [2024-10-11 19:58:47,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:47,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:47,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:47,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 19:58:47,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:47,340 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:47,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1137220054, now seen corresponding path program 1 times [2024-10-11 19:58:47,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:47,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079225295] [2024-10-11 19:58:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:47,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:47,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:47,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:47,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:58:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:47,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:58:47,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:47,472 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:47,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:47,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079225295] [2024-10-11 19:58:47,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079225295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:47,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:47,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:58:47,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796864185] [2024-10-11 19:58:47,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:47,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:47,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:47,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:47,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:47,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-11 19:58:47,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:47,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:47,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-11 19:58:47,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:48,333 INFO L124 PetriNetUnfolderBase]: 5464/9051 cut-off events. [2024-10-11 19:58:48,333 INFO L125 PetriNetUnfolderBase]: For 3890/3890 co-relation queries the response was YES. [2024-10-11 19:58:48,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20021 conditions, 9051 events. 5464/9051 cut-off events. For 3890/3890 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 74756 event pairs, 5216 based on Foata normal form. 332/7803 useless extension candidates. Maximal degree in co-relation 15082. Up to 6144 conditions per place. [2024-10-11 19:58:48,400 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 91 selfloop transitions, 12 changer transitions 0/122 dead transitions. [2024-10-11 19:58:48,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 122 transitions, 879 flow [2024-10-11 19:58:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:58:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:58:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-10-11 19:58:48,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-10-11 19:58:48,402 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 607 flow. Second operand 4 states and 164 transitions. [2024-10-11 19:58:48,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 122 transitions, 879 flow [2024-10-11 19:58:48,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 122 transitions, 858 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:58:48,412 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 621 flow [2024-10-11 19:58:48,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2024-10-11 19:58:48,413 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 25 predicate places. [2024-10-11 19:58:48,413 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 621 flow [2024-10-11 19:58:48,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:48,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:48,414 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:58:48,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:58:48,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:48,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:48,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1555360153, now seen corresponding path program 2 times [2024-10-11 19:58:48,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:48,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214656942] [2024-10-11 19:58:48,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:58:48,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:48,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:48,617 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:48,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:58:48,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:58:48,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:48,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:58:48,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:48,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:48,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:49,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:49,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214656942] [2024-10-11 19:58:49,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214656942] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:49,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:49,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:58:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598264577] [2024-10-11 19:58:49,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:49,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:58:49,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:49,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:58:49,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:58:49,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-11 19:58:49,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 621 flow. Second operand has 14 states, 14 states have (on average 25.571428571428573) internal successors, (358), 14 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:49,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:49,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-11 19:58:49,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:52,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:54,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:58,849 INFO L124 PetriNetUnfolderBase]: 5494/9141 cut-off events. [2024-10-11 19:58:58,849 INFO L125 PetriNetUnfolderBase]: For 4820/4820 co-relation queries the response was YES. [2024-10-11 19:58:58,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22136 conditions, 9141 events. 5494/9141 cut-off events. For 4820/4820 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 76131 event pairs, 5216 based on Foata normal form. 30/7559 useless extension candidates. Maximal degree in co-relation 16905. Up to 7801 conditions per place. [2024-10-11 19:58:58,910 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 37 selfloop transitions, 107 changer transitions 0/161 dead transitions. [2024-10-11 19:58:58,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 161 transitions, 1389 flow [2024-10-11 19:58:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:58:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:58:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 634 transitions. [2024-10-11 19:58:58,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4502840909090909 [2024-10-11 19:58:58,914 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 621 flow. Second operand 22 states and 634 transitions. [2024-10-11 19:58:58,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 161 transitions, 1389 flow [2024-10-11 19:58:58,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 161 transitions, 1374 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:58:58,936 INFO L231 Difference]: Finished difference. Result has 117 places, 161 transitions, 1390 flow [2024-10-11 19:58:58,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1390, PETRI_PLACES=117, PETRI_TRANSITIONS=161} [2024-10-11 19:58:58,937 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2024-10-11 19:58:58,937 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 161 transitions, 1390 flow [2024-10-11 19:58:58,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 25.571428571428573) internal successors, (358), 14 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:58:58,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:58,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:58,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 19:58:59,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:59,139 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:58:59,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:59,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1692219582, now seen corresponding path program 1 times [2024-10-11 19:58:59,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:59,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104833498] [2024-10-11 19:58:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:59,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:58:59,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:59,141 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:58:59,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:58:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:59,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 19:58:59,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:59,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:59,378 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 19:58:59,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:00,042 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 19:59:00,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:00,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104833498] [2024-10-11 19:59:00,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104833498] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:00,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:00,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-11 19:59:00,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136123629] [2024-10-11 19:59:00,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:00,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 19:59:00,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:00,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 19:59:00,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:59:00,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-11 19:59:00,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 161 transitions, 1390 flow. Second operand has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:00,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:00,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-11 19:59:00,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:03,322 INFO L124 PetriNetUnfolderBase]: 10520/17523 cut-off events. [2024-10-11 19:59:03,322 INFO L125 PetriNetUnfolderBase]: For 9593/9593 co-relation queries the response was YES. [2024-10-11 19:59:03,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41777 conditions, 17523 events. 10520/17523 cut-off events. For 9593/9593 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 155630 event pairs, 9932 based on Foata normal form. 0/15079 useless extension candidates. Maximal degree in co-relation 41534. Up to 6153 conditions per place. [2024-10-11 19:59:03,460 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 115 selfloop transitions, 96 changer transitions 0/228 dead transitions. [2024-10-11 19:59:03,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 228 transitions, 2026 flow [2024-10-11 19:59:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:59:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:59:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 332 transitions. [2024-10-11 19:59:03,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-10-11 19:59:03,462 INFO L175 Difference]: Start difference. First operand has 117 places, 161 transitions, 1390 flow. Second operand 9 states and 332 transitions. [2024-10-11 19:59:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 228 transitions, 2026 flow [2024-10-11 19:59:03,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 228 transitions, 1746 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-10-11 19:59:03,502 INFO L231 Difference]: Finished difference. Result has 118 places, 161 transitions, 1315 flow [2024-10-11 19:59:03,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1315, PETRI_PLACES=118, PETRI_TRANSITIONS=161} [2024-10-11 19:59:03,503 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 52 predicate places. [2024-10-11 19:59:03,503 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 161 transitions, 1315 flow [2024-10-11 19:59:03,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:03,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:03,504 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:03,507 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 19:59:03,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:03,704 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:59:03,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:03,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1507475913, now seen corresponding path program 2 times [2024-10-11 19:59:03,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:03,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421070690] [2024-10-11 19:59:03,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:59:03,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:03,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:03,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:03,707 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 (12)] Waiting until timeout for monitored process [2024-10-11 19:59:03,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 19:59:03,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:03,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:59:03,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:03,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:59:03,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:59:03,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:59:03,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:59:03,931 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:59:03,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:59:03,976 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 19:59:03,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:03,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:03,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421070690] [2024-10-11 19:59:03,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421070690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:03,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:03,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183599759] [2024-10-11 19:59:03,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:03,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:03,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:03,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:03,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:03,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-11 19:59:03,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 161 transitions, 1315 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:03,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:03,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-11 19:59:03,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:05,334 INFO L124 PetriNetUnfolderBase]: 8503/14424 cut-off events. [2024-10-11 19:59:05,335 INFO L125 PetriNetUnfolderBase]: For 11785/11785 co-relation queries the response was YES. [2024-10-11 19:59:05,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33819 conditions, 14424 events. 8503/14424 cut-off events. For 11785/11785 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 128507 event pairs, 8000 based on Foata normal form. 598/13426 useless extension candidates. Maximal degree in co-relation 33588. Up to 12225 conditions per place. [2024-10-11 19:59:05,411 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 128 selfloop transitions, 12 changer transitions 0/159 dead transitions. [2024-10-11 19:59:05,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 159 transitions, 1579 flow [2024-10-11 19:59:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-10-11 19:59:05,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 19:59:05,413 INFO L175 Difference]: Start difference. First operand has 118 places, 161 transitions, 1315 flow. Second operand 4 states and 128 transitions. [2024-10-11 19:59:05,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 159 transitions, 1579 flow [2024-10-11 19:59:05,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 159 transitions, 1540 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:05,447 INFO L231 Difference]: Finished difference. Result has 117 places, 159 transitions, 1284 flow [2024-10-11 19:59:05,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1284, PETRI_PLACES=117, PETRI_TRANSITIONS=159} [2024-10-11 19:59:05,448 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2024-10-11 19:59:05,448 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 159 transitions, 1284 flow [2024-10-11 19:59:05,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:05,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:05,449 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:05,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 19:59:05,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:05,649 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:59:05,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash 722699914, now seen corresponding path program 2 times [2024-10-11 19:59:05,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:05,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631580155] [2024-10-11 19:59:05,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:59:05,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:05,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:05,652 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:05,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:59:05,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 19:59:05,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:05,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:59:05,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:05,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:59:05,861 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 19:59:05,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:05,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:05,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631580155] [2024-10-11 19:59:05,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631580155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:05,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:05,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:59:05,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327404678] [2024-10-11 19:59:05,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:05,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:05,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:05,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:05,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-11 19:59:05,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 159 transitions, 1284 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:05,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:05,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-11 19:59:05,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:07,070 INFO L124 PetriNetUnfolderBase]: 6995/12180 cut-off events. [2024-10-11 19:59:07,070 INFO L125 PetriNetUnfolderBase]: For 6602/6602 co-relation queries the response was YES. [2024-10-11 19:59:07,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26934 conditions, 12180 events. 6995/12180 cut-off events. For 6602/6602 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 109075 event pairs, 6532 based on Foata normal form. 378/11265 useless extension candidates. Maximal degree in co-relation 26705. Up to 10048 conditions per place. [2024-10-11 19:59:07,161 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 112 selfloop transitions, 26 changer transitions 0/157 dead transitions. [2024-10-11 19:59:07,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 157 transitions, 1544 flow [2024-10-11 19:59:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-10-11 19:59:07,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-10-11 19:59:07,162 INFO L175 Difference]: Start difference. First operand has 117 places, 159 transitions, 1284 flow. Second operand 4 states and 134 transitions. [2024-10-11 19:59:07,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 157 transitions, 1544 flow [2024-10-11 19:59:07,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 157 transitions, 1526 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:59:07,188 INFO L231 Difference]: Finished difference. Result has 114 places, 157 transitions, 1302 flow [2024-10-11 19:59:07,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1302, PETRI_PLACES=114, PETRI_TRANSITIONS=157} [2024-10-11 19:59:07,190 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 48 predicate places. [2024-10-11 19:59:07,190 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 157 transitions, 1302 flow [2024-10-11 19:59:07,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:07,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:07,191 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 19:59:07,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 19:59:07,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:07,391 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 19:59:07,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:07,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1560028007, now seen corresponding path program 3 times [2024-10-11 19:59:07,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:07,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686031193] [2024-10-11 19:59:07,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:59:07,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:07,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:07,395 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:07,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 19:59:07,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 19:59:07,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:07,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:59:07,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:07,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:59:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:08,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:09,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:09,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686031193] [2024-10-11 19:59:09,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686031193] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:09,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:09,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 19:59:09,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012484417] [2024-10-11 19:59:09,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:09,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 19:59:09,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:09,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 19:59:09,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 19:59:10,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-11 19:59:10,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 157 transitions, 1302 flow. Second operand has 26 states, 26 states have (on average 25.76923076923077) internal successors, (670), 26 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:10,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:10,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-11 19:59:10,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:19,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:21,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:22,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:23,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:25,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:28,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:32,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:33,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:34,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:35,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:37,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:38,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:40,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:43,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:44,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:48,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:49,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:52,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []