./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-inc-subseq.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-inc-subseq.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 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:59:07,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:59:07,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:59:07,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:59:07,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:59:07,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:59:07,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:59:07,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:59:07,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:59:07,601 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:59:07,602 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:59:07,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:59:07,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:59:07,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:59:07,604 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:59:07,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:59:07,605 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:59:07,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:59:07,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:59:07,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:59:07,608 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:59:07,612 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:59:07,612 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:59:07,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:59:07,613 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:59:07,613 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:59:07,613 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:59:07,614 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:59:07,614 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:59:07,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:59:07,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:59:07,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:59:07,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:59:07,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:07,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:59:07,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:59:07,617 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:59:07,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:59:07,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:59:07,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:59:07,618 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:59:07,618 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:59:07,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 [2024-10-11 19:59:07,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:59:07,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:59:07,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:59:07,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:59:07,901 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:59:07,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-11 19:59:09,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:59:09,539 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:59:09,539 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-11 19:59:09,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fb9db6b53/e6ff0d6204514347a5027ef5dce959fb/FLAGdb5cef681 [2024-10-11 19:59:09,559 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fb9db6b53/e6ff0d6204514347a5027ef5dce959fb [2024-10-11 19:59:09,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:59:09,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:59:09,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:09,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:59:09,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:59:09,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:09" (1/1) ... [2024-10-11 19:59:09,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768996b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:09, skipping insertion in model container [2024-10-11 19:59:09,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:09" (1/1) ... [2024-10-11 19:59:09,599 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:09,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:09,785 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 19:59:09,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58448350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:09, skipping insertion in model container [2024-10-11 19:59:09,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:09,786 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:59:09,788 INFO L158 Benchmark]: Toolchain (without parser) took 223.70ms. Allocated memory is still 151.0MB. Free memory was 97.3MB in the beginning and 86.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:59:09,789 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 151.0MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:59:09,789 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.91ms. Allocated memory is still 151.0MB. Free memory was 97.3MB in the beginning and 86.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:59:09,791 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 151.0MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.91ms. Allocated memory is still 151.0MB. Free memory was 97.3MB in the beginning and 86.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: 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-inc-subseq.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 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:59:11,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:59:11,955 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:59:11,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:59:11,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:59:11,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:59:11,991 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:59:11,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:59:11,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:59:11,994 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:59:11,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:59:11,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:59:11,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:59:11,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:59:11,997 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:59:11,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:59:11,998 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:59:11,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:59:11,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:59:11,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:59:11,999 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:59:12,002 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:59:12,003 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:59:12,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:59:12,003 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:59:12,003 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:59:12,003 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:59:12,004 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:59:12,004 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:59:12,004 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:59:12,004 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:59:12,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:59:12,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:59:12,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:59:12,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:59:12,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:12,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:59:12,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:59:12,006 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:59:12,007 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:59:12,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:59:12,009 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:59:12,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:59:12,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:59:12,010 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:59:12,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 [2024-10-11 19:59:12,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:59:12,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:59:12,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:59:12,360 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:59:12,361 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:59:12,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-11 19:59:13,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:59:14,115 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:59:14,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-11 19:59:14,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c21d505c6/36b7d5603c2443ecb07c77583f23224f/FLAGed88b4bf5 [2024-10-11 19:59:14,149 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c21d505c6/36b7d5603c2443ecb07c77583f23224f [2024-10-11 19:59:14,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:59:14,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:59:14,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:14,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:59:14,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:59:14,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea2601c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14, skipping insertion in model container [2024-10-11 19:59:14,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,198 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:14,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:14,461 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:59:14,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:14,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:14,486 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:59:14,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:14,544 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:59:14,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14 WrapperNode [2024-10-11 19:59:14,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:14,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:14,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:59:14,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:59:14,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,609 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 12, calls inlined = 14, statements flattened = 184 [2024-10-11 19:59:14,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:14,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:59:14,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:59:14,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:59:14,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,655 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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 19:59:14,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,682 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:59:14,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:59:14,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:59:14,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:59:14,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (1/1) ... [2024-10-11 19:59:14,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:14,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:14,719 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 19:59:14,721 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 19:59:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:59:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:59:14,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:59:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:59:14,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:59:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:59:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:59:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:59:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:59:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:59:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:59:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:59:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:59:14,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:59:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:59:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:59:14,760 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 19:59:14,886 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:59:14,888 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:59:15,433 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:59:15,433 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:59:15,758 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:59:15,758 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 19:59:15,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:15 BoogieIcfgContainer [2024-10-11 19:59:15,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:59:15,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:59:15,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:59:15,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:59:15,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:59:14" (1/3) ... [2024-10-11 19:59:15,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8efbafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:15, skipping insertion in model container [2024-10-11 19:59:15,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:14" (2/3) ... [2024-10-11 19:59:15,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8efbafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:15, skipping insertion in model container [2024-10-11 19:59:15,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:15" (3/3) ... [2024-10-11 19:59:15,769 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2024-10-11 19:59:15,788 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:59:15,788 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-11 19:59:15,788 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:59:15,853 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:59:15,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 53 transitions, 120 flow [2024-10-11 19:59:15,929 INFO L124 PetriNetUnfolderBase]: 5/51 cut-off events. [2024-10-11 19:59:15,931 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:59:15,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 5/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 140 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-11 19:59:15,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 53 transitions, 120 flow [2024-10-11 19:59:15,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 50 transitions, 112 flow [2024-10-11 19:59:15,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:59:15,961 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;@41a87d45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:59:15,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-10-11 19:59:15,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:59:15,965 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:59:15,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:59:15,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:15,966 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:59:15,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:15,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash 566089, now seen corresponding path program 1 times [2024-10-11 19:59:15,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:15,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027475937] [2024-10-11 19:59:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:15,986 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 19:59:15,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:15,990 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 19:59:15,997 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 19:59:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:16,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:59:16,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:16,144 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 19:59:16,161 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 19:59:16,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:16,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:16,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027475937] [2024-10-11 19:59:16,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027475937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:16,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:16,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:59:16,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872603254] [2024-10-11 19:59:16,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:16,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:59:16,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:16,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:59:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:59:16,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-11 19:59:16,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:59:16,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:16,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-11 19:59:16,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:16,516 INFO L124 PetriNetUnfolderBase]: 299/576 cut-off events. [2024-10-11 19:59:16,517 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 19:59:16,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 576 events. 299/576 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3121 event pairs, 171 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 985. Up to 443 conditions per place. [2024-10-11 19:59:16,523 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 28 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-10-11 19:59:16,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 164 flow [2024-10-11 19:59:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:59:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:59:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-11 19:59:16,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2024-10-11 19:59:16,537 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 112 flow. Second operand 3 states and 90 transitions. [2024-10-11 19:59:16,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 164 flow [2024-10-11 19:59:16,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 156 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:59:16,543 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 100 flow [2024-10-11 19:59:16,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-10-11 19:59:16,552 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-10-11 19:59:16,552 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 100 flow [2024-10-11 19:59:16,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:59:16,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:16,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:59:16,556 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 19:59:16,754 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 19:59:16,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:16,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash 566090, now seen corresponding path program 1 times [2024-10-11 19:59:16,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:16,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750676374] [2024-10-11 19:59:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:16,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:16,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:16,758 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 19:59:16,759 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 19:59:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:16,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:59:16,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:16,909 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 19:59:17,006 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 19:59:17,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:17,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750676374] [2024-10-11 19:59:17,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750676374] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:17,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:17,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:17,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126673735] [2024-10-11 19:59:17,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:17,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:17,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:17,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-11 19:59:17,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 19:59:17,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:17,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-11 19:59:17,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:17,437 INFO L124 PetriNetUnfolderBase]: 301/582 cut-off events. [2024-10-11 19:59:17,438 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:59:17,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 582 events. 301/582 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3133 event pairs, 171 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 1019. Up to 452 conditions per place. [2024-10-11 19:59:17,443 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 31 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-10-11 19:59:17,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 190 flow [2024-10-11 19:59:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-11 19:59:17,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-10-11 19:59:17,446 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 100 flow. Second operand 4 states and 116 transitions. [2024-10-11 19:59:17,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 190 flow [2024-10-11 19:59:17,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:17,448 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 152 flow [2024-10-11 19:59:17,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-10-11 19:59:17,449 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-10-11 19:59:17,449 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 152 flow [2024-10-11 19:59:17,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 19:59:17,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:17,450 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 19:59:17,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 19:59:17,653 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 19:59:17,654 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:17,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:17,654 INFO L85 PathProgramCache]: Analyzing trace with hash 17549690, now seen corresponding path program 1 times [2024-10-11 19:59:17,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:17,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371904124] [2024-10-11 19:59:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:17,655 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 19:59:17,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:17,658 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 19:59:17,660 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 19:59:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:17,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:59:17,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:17,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:59:17,734 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 19:59:17,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:17,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:17,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371904124] [2024-10-11 19:59:17,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371904124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:17,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:17,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:59:17,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225779679] [2024-10-11 19:59:17,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:17,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:17,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:17,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:17,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:17,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-10-11 19:59:17,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 19:59:17,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:17,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-10-11 19:59:17,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:18,000 INFO L124 PetriNetUnfolderBase]: 291/534 cut-off events. [2024-10-11 19:59:18,000 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:59:18,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 534 events. 291/534 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 2649 event pairs, 171 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 973. Up to 434 conditions per place. [2024-10-11 19:59:18,005 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 33 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-10-11 19:59:18,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 216 flow [2024-10-11 19:59:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-10-11 19:59:18,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-10-11 19:59:18,008 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 152 flow. Second operand 4 states and 94 transitions. [2024-10-11 19:59:18,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 216 flow [2024-10-11 19:59:18,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:59:18,010 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 150 flow [2024-10-11 19:59:18,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-10-11 19:59:18,011 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-10-11 19:59:18,011 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 150 flow [2024-10-11 19:59:18,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 19:59:18,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:18,011 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 19:59:18,015 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 19:59:18,212 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 19:59:18,212 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:18,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:18,213 INFO L85 PathProgramCache]: Analyzing trace with hash 17549691, now seen corresponding path program 1 times [2024-10-11 19:59:18,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:18,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940750420] [2024-10-11 19:59:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:18,214 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 19:59:18,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:18,217 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 19:59:18,218 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 19:59:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:18,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:59:18,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:18,291 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 19:59:18,345 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 19:59:18,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:18,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940750420] [2024-10-11 19:59:18,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940750420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:18,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:18,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:59:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215576921] [2024-10-11 19:59:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:18,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:18,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:18,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-11 19:59:18,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:18,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:18,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-11 19:59:18,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:18,644 INFO L124 PetriNetUnfolderBase]: 275/512 cut-off events. [2024-10-11 19:59:18,645 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:59:18,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 512 events. 275/512 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2587 event pairs, 153 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 921. Up to 403 conditions per place. [2024-10-11 19:59:18,648 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 31 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-10-11 19:59:18,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 218 flow [2024-10-11 19:59:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-11 19:59:18,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2024-10-11 19:59:18,650 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 150 flow. Second operand 4 states and 110 transitions. [2024-10-11 19:59:18,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 218 flow [2024-10-11 19:59:18,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:18,653 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 152 flow [2024-10-11 19:59:18,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-10-11 19:59:18,654 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-10-11 19:59:18,654 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 152 flow [2024-10-11 19:59:18,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:18,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:18,655 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:59:18,660 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 19:59:18,855 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 19:59:18,856 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:18,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:18,856 INFO L85 PathProgramCache]: Analyzing trace with hash 544030810, now seen corresponding path program 1 times [2024-10-11 19:59:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:18,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54511861] [2024-10-11 19:59:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:18,857 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 19:59:18,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:18,860 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 19:59:18,862 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 19:59:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:18,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:59:18,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:18,919 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 19:59:19,056 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 19:59:19,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:19,353 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 19:59:19,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:19,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54511861] [2024-10-11 19:59:19,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54511861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:19,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:19,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:59:19,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728989649] [2024-10-11 19:59:19,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:19,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:59:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:59:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:59:19,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-11 19:59:19,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 152 flow. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:19,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:19,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-11 19:59:19,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:20,409 INFO L124 PetriNetUnfolderBase]: 281/530 cut-off events. [2024-10-11 19:59:20,409 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 19:59:20,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 530 events. 281/530 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2670 event pairs, 153 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 922. Up to 415 conditions per place. [2024-10-11 19:59:20,413 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 30 selfloop transitions, 25 changer transitions 0/65 dead transitions. [2024-10-11 19:59:20,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 355 flow [2024-10-11 19:59:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:59:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:59:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-10-11 19:59:20,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47358490566037736 [2024-10-11 19:59:20,417 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 152 flow. Second operand 10 states and 251 transitions. [2024-10-11 19:59:20,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 355 flow [2024-10-11 19:59:20,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:20,420 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 314 flow [2024-10-11 19:59:20,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=314, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2024-10-11 19:59:20,420 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-10-11 19:59:20,420 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 314 flow [2024-10-11 19:59:20,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:20,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:20,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:20,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:59:20,623 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 19:59:20,624 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:20,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:20,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1679151069, now seen corresponding path program 1 times [2024-10-11 19:59:20,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:20,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315232453] [2024-10-11 19:59:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:20,625 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 19:59:20,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:20,630 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 19:59:20,632 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 19:59:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:20,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:59:20,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:20,784 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 19:59:20,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:20,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:20,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315232453] [2024-10-11 19:59:20,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315232453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:20,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:20,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:59:20,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527220003] [2024-10-11 19:59:20,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:20,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:59:20,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:59:20,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:59:20,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-11 19:59:20,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 19:59:20,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:20,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-11 19:59:20,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:21,123 INFO L124 PetriNetUnfolderBase]: 542/903 cut-off events. [2024-10-11 19:59:21,124 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-11 19:59:21,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 903 events. 542/903 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4773 event pairs, 136 based on Foata normal form. 0/596 useless extension candidates. Maximal degree in co-relation 1806. Up to 486 conditions per place. [2024-10-11 19:59:21,130 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 68 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2024-10-11 19:59:21,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 509 flow [2024-10-11 19:59:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:59:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:59:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-10-11 19:59:21,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-10-11 19:59:21,132 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 314 flow. Second operand 5 states and 140 transitions. [2024-10-11 19:59:21,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 509 flow [2024-10-11 19:59:21,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 445 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-11 19:59:21,137 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 278 flow [2024-10-11 19:59:21,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2024-10-11 19:59:21,138 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-10-11 19:59:21,138 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 278 flow [2024-10-11 19:59:21,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 19:59:21,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:21,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:21,142 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 19:59:21,341 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 19:59:21,342 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:21,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1243542403, now seen corresponding path program 1 times [2024-10-11 19:59:21,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:21,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530006447] [2024-10-11 19:59:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:21,343 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 19:59:21,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:21,346 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 19:59:21,347 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 19:59:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:21,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:59:21,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:21,482 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 19:59:21,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:21,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530006447] [2024-10-11 19:59:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530006447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:21,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:21,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:21,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584607868] [2024-10-11 19:59:21,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:21,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:21,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:21,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:21,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:21,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-10-11 19:59:21,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 19:59:21,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:21,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-10-11 19:59:21,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:21,770 INFO L124 PetriNetUnfolderBase]: 490/961 cut-off events. [2024-10-11 19:59:21,771 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-11 19:59:21,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 961 events. 490/961 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5691 event pairs, 312 based on Foata normal form. 27/733 useless extension candidates. Maximal degree in co-relation 1930. Up to 677 conditions per place. [2024-10-11 19:59:21,777 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 79 selfloop transitions, 3 changer transitions 1/95 dead transitions. [2024-10-11 19:59:21,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 576 flow [2024-10-11 19:59:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-11 19:59:21,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6556603773584906 [2024-10-11 19:59:21,779 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 278 flow. Second operand 4 states and 139 transitions. [2024-10-11 19:59:21,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 576 flow [2024-10-11 19:59:21,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:21,785 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 285 flow [2024-10-11 19:59:21,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-10-11 19:59:21,788 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-10-11 19:59:21,788 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 285 flow [2024-10-11 19:59:21,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 19:59:21,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:21,788 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:59:21,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-11 19:59:21,989 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 19:59:21,989 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:21,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1944911754, now seen corresponding path program 2 times [2024-10-11 19:59:21,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:21,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219453501] [2024-10-11 19:59:21,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:59:21,990 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 19:59:21,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:21,991 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 19:59:21,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:59:22,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:59:22,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:22,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 19:59:22,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:22,071 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 19:59:22,379 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 19:59:22,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:22,868 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 19:59:22,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:22,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219453501] [2024-10-11 19:59:22,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219453501] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:22,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:22,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:59:22,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44388078] [2024-10-11 19:59:22,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:22,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:59:22,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:22,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:59:22,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:59:23,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-11 19:59:23,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 285 flow. Second operand has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 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 19:59:23,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:23,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-11 19:59:23,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:27,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:31,580 INFO L124 PetriNetUnfolderBase]: 508/1015 cut-off events. [2024-10-11 19:59:31,581 INFO L125 PetriNetUnfolderBase]: For 232/284 co-relation queries the response was YES. [2024-10-11 19:59:31,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 1015 events. 508/1015 cut-off events. For 232/284 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6138 event pairs, 312 based on Foata normal form. 18/751 useless extension candidates. Maximal degree in co-relation 2182. Up to 791 conditions per place. [2024-10-11 19:59:31,588 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 31 selfloop transitions, 61 changer transitions 0/102 dead transitions. [2024-10-11 19:59:31,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 102 transitions, 655 flow [2024-10-11 19:59:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:59:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:59:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 521 transitions. [2024-10-11 19:59:31,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4468267581475129 [2024-10-11 19:59:31,592 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 285 flow. Second operand 22 states and 521 transitions. [2024-10-11 19:59:31,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 102 transitions, 655 flow [2024-10-11 19:59:31,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 102 transitions, 651 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:59:31,597 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 647 flow [2024-10-11 19:59:31,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=647, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2024-10-11 19:59:31,598 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-10-11 19:59:31,598 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 647 flow [2024-10-11 19:59:31,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 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 19:59:31,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:31,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:31,604 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 19:59:31,799 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 19:59:31,799 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:31,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1204978803, now seen corresponding path program 1 times [2024-10-11 19:59:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692827760] [2024-10-11 19:59:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:31,800 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 19:59:31,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:31,801 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 19:59:31,802 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 19:59:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:31,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:59:31,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:31,922 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 19:59:31,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:31,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:31,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692827760] [2024-10-11 19:59:31,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692827760] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:31,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:31,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:59:31,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074466280] [2024-10-11 19:59:31,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:31,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:59:31,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:59:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:59:31,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-10-11 19:59:31,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 647 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:31,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:31,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-10-11 19:59:31,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:32,137 INFO L124 PetriNetUnfolderBase]: 506/1013 cut-off events. [2024-10-11 19:59:32,138 INFO L125 PetriNetUnfolderBase]: For 246/298 co-relation queries the response was YES. [2024-10-11 19:59:32,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2600 conditions, 1013 events. 506/1013 cut-off events. For 246/298 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6089 event pairs, 312 based on Foata normal form. 2/751 useless extension candidates. Maximal degree in co-relation 2477. Up to 842 conditions per place. [2024-10-11 19:59:32,145 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 77 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-10-11 19:59:32,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 816 flow [2024-10-11 19:59:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:59:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:59:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-11 19:59:32,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2024-10-11 19:59:32,149 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 647 flow. Second operand 3 states and 95 transitions. [2024-10-11 19:59:32,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 816 flow [2024-10-11 19:59:32,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 101 transitions, 649 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-10-11 19:59:32,156 INFO L231 Difference]: Finished difference. Result has 79 places, 101 transitions, 495 flow [2024-10-11 19:59:32,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=77, 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=3, PETRI_FLOW=495, PETRI_PLACES=79, PETRI_TRANSITIONS=101} [2024-10-11 19:59:32,159 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-10-11 19:59:32,159 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 101 transitions, 495 flow [2024-10-11 19:59:32,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:32,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:32,159 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:32,174 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 19:59:32,360 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 19:59:32,360 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:32,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1342711260, now seen corresponding path program 1 times [2024-10-11 19:59:32,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:32,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875763747] [2024-10-11 19:59:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:32,362 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 19:59:32,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:32,366 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 19:59:32,367 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 19:59:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:32,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:59:32,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:32,452 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 19:59:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:32,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:33,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875763747] [2024-10-11 19:59:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875763747] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:33,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:33,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:59:33,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972553441] [2024-10-11 19:59:33,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:33,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:59:33,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:59:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:59:33,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-10-11 19:59:33,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 101 transitions, 495 flow. Second operand has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:33,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:33,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-10-11 19:59:33,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:35,380 INFO L124 PetriNetUnfolderBase]: 1276/2121 cut-off events. [2024-10-11 19:59:35,381 INFO L125 PetriNetUnfolderBase]: For 300/336 co-relation queries the response was YES. [2024-10-11 19:59:35,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5224 conditions, 2121 events. 1276/2121 cut-off events. For 300/336 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11857 event pairs, 156 based on Foata normal form. 144/1656 useless extension candidates. Maximal degree in co-relation 5119. Up to 637 conditions per place. [2024-10-11 19:59:35,391 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 160 selfloop transitions, 32 changer transitions 0/200 dead transitions. [2024-10-11 19:59:35,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 200 transitions, 1153 flow [2024-10-11 19:59:35,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:59:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:59:35,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 335 transitions. [2024-10-11 19:59:35,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267295597484277 [2024-10-11 19:59:35,394 INFO L175 Difference]: Start difference. First operand has 79 places, 101 transitions, 495 flow. Second operand 12 states and 335 transitions. [2024-10-11 19:59:35,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 200 transitions, 1153 flow [2024-10-11 19:59:35,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 200 transitions, 1141 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:59:35,404 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 602 flow [2024-10-11 19:59:35,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=602, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2024-10-11 19:59:35,405 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-10-11 19:59:35,406 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 602 flow [2024-10-11 19:59:35,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:35,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:35,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:35,413 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 19:59:35,607 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 19:59:35,608 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:35,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1867200092, now seen corresponding path program 1 times [2024-10-11 19:59:35,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:35,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287527706] [2024-10-11 19:59:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:35,609 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 19:59:35,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:35,610 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 19:59:35,611 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 19:59:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:35,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:59:35,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:35,726 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 19:59:35,757 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:59:35,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:59:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:59:35,801 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:35,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:35,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287527706] [2024-10-11 19:59:35,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287527706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:35,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:35,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:35,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354610297] [2024-10-11 19:59:35,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:35,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:35,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:35,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:35,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-11 19:59:35,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 19:59:35,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:35,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-11 19:59:35,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:36,068 INFO L124 PetriNetUnfolderBase]: 716/1430 cut-off events. [2024-10-11 19:59:36,069 INFO L125 PetriNetUnfolderBase]: For 687/713 co-relation queries the response was YES. [2024-10-11 19:59:36,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 1430 events. 716/1430 cut-off events. For 687/713 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8554 event pairs, 455 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 3746. Up to 1104 conditions per place. [2024-10-11 19:59:36,079 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 68 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2024-10-11 19:59:36,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 774 flow [2024-10-11 19:59:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:59:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:59:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-11 19:59:36,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4641509433962264 [2024-10-11 19:59:36,081 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 602 flow. Second operand 5 states and 123 transitions. [2024-10-11 19:59:36,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 774 flow [2024-10-11 19:59:36,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 735 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:36,090 INFO L231 Difference]: Finished difference. Result has 93 places, 106 transitions, 599 flow [2024-10-11 19:59:36,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=93, PETRI_TRANSITIONS=106} [2024-10-11 19:59:36,091 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-10-11 19:59:36,091 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 106 transitions, 599 flow [2024-10-11 19:59:36,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 19:59:36,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:36,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:36,101 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 19:59:36,291 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 19:59:36,292 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:36,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:36,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1867200091, now seen corresponding path program 1 times [2024-10-11 19:59:36,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:36,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379988909] [2024-10-11 19:59:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:36,293 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 19:59:36,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:36,294 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 19:59:36,295 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 19:59:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:36,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 19:59:36,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:36,442 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 19:59:36,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:59:36,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:59:36,617 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 19:59:36,638 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:59:36,638 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 19:59:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:36,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:37,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:37,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379988909] [2024-10-11 19:59:37,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379988909] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:37,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:37,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:59:37,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500803414] [2024-10-11 19:59:37,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:37,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:59:37,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:37,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:59:37,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:59:39,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-11 19:59:39,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 106 transitions, 599 flow. Second operand has 10 states, 10 states have (on average 19.2) internal successors, (192), 10 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:39,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:39,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-11 19:59:39,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:44,832 INFO L124 PetriNetUnfolderBase]: 1500/2946 cut-off events. [2024-10-11 19:59:44,832 INFO L125 PetriNetUnfolderBase]: For 1290/1336 co-relation queries the response was YES. [2024-10-11 19:59:44,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7717 conditions, 2946 events. 1500/2946 cut-off events. For 1290/1336 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19927 event pairs, 935 based on Foata normal form. 6/2579 useless extension candidates. Maximal degree in co-relation 7532. Up to 912 conditions per place. [2024-10-11 19:59:44,854 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 114 selfloop transitions, 92 changer transitions 0/220 dead transitions. [2024-10-11 19:59:44,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 220 transitions, 1667 flow [2024-10-11 19:59:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:59:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:59:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 331 transitions. [2024-10-11 19:59:44,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44609164420485176 [2024-10-11 19:59:44,858 INFO L175 Difference]: Start difference. First operand has 93 places, 106 transitions, 599 flow. Second operand 14 states and 331 transitions. [2024-10-11 19:59:44,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 220 transitions, 1667 flow [2024-10-11 19:59:44,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 220 transitions, 1612 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:44,869 INFO L231 Difference]: Finished difference. Result has 108 places, 154 transitions, 1146 flow [2024-10-11 19:59:44,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1146, PETRI_PLACES=108, PETRI_TRANSITIONS=154} [2024-10-11 19:59:44,870 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 56 predicate places. [2024-10-11 19:59:44,870 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 154 transitions, 1146 flow [2024-10-11 19:59:44,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 10 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:44,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:44,871 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:44,878 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 (13)] Forceful destruction successful, exit code 0 [2024-10-11 19:59:45,075 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 19:59:45,076 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:45,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1430331509, now seen corresponding path program 2 times [2024-10-11 19:59:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:45,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612949723] [2024-10-11 19:59:45,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:59:45,077 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 19:59:45,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:45,080 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 19:59:45,081 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 19:59:45,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 19:59:45,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:45,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:59:45,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:45,205 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 19:59:45,214 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 19:59:45,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:59:45,375 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 19:59:45,395 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:59:45,395 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 19:59:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 19:59:45,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:45,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:45,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612949723] [2024-10-11 19:59:45,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612949723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:45,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:45,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:45,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409403635] [2024-10-11 19:59:45,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:45,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:45,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:45,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:45,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-11 19:59:45,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 154 transitions, 1146 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 19:59:45,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:45,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-11 19:59:45,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:46,115 INFO L124 PetriNetUnfolderBase]: 1303/2650 cut-off events. [2024-10-11 19:59:46,115 INFO L125 PetriNetUnfolderBase]: For 1876/1914 co-relation queries the response was YES. [2024-10-11 19:59:46,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7074 conditions, 2650 events. 1303/2650 cut-off events. For 1876/1914 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17630 event pairs, 814 based on Foata normal form. 115/2524 useless extension candidates. Maximal degree in co-relation 6855. Up to 2115 conditions per place. [2024-10-11 19:59:46,137 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 124 selfloop transitions, 12 changer transitions 0/152 dead transitions. [2024-10-11 19:59:46,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 152 transitions, 1402 flow [2024-10-11 19:59:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-11 19:59:46,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-10-11 19:59:46,139 INFO L175 Difference]: Start difference. First operand has 108 places, 154 transitions, 1146 flow. Second operand 4 states and 102 transitions. [2024-10-11 19:59:46,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 152 transitions, 1402 flow [2024-10-11 19:59:46,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 152 transitions, 1379 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:46,150 INFO L231 Difference]: Finished difference. Result has 107 places, 152 transitions, 1131 flow [2024-10-11 19:59:46,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1131, PETRI_PLACES=107, PETRI_TRANSITIONS=152} [2024-10-11 19:59:46,152 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 55 predicate places. [2024-10-11 19:59:46,153 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 152 transitions, 1131 flow [2024-10-11 19:59:46,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 19:59:46,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:46,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:46,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 19:59:46,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:46,354 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:46,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1324904068, now seen corresponding path program 1 times [2024-10-11 19:59:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470326643] [2024-10-11 19:59:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:46,356 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 19:59:46,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:46,359 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:46,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 19:59:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:46,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:59:46,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:46,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:46,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:46,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470326643] [2024-10-11 19:59:46,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470326643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:46,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:46,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:59:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930782356] [2024-10-11 19:59:46,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:46,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:46,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:46,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-10-11 19:59:46,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 152 transitions, 1131 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 19:59:46,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:46,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-10-11 19:59:46,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:47,415 INFO L124 PetriNetUnfolderBase]: 2522/4673 cut-off events. [2024-10-11 19:59:47,415 INFO L125 PetriNetUnfolderBase]: For 1867/1867 co-relation queries the response was YES. [2024-10-11 19:59:47,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12238 conditions, 4673 events. 2522/4673 cut-off events. For 1867/1867 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 30202 event pairs, 434 based on Foata normal form. 196/4535 useless extension candidates. Maximal degree in co-relation 12020. Up to 1614 conditions per place. [2024-10-11 19:59:47,441 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 155 selfloop transitions, 20 changer transitions 0/184 dead transitions. [2024-10-11 19:59:47,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 184 transitions, 1595 flow [2024-10-11 19:59:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:59:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:59:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-10-11 19:59:47,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.539622641509434 [2024-10-11 19:59:47,444 INFO L175 Difference]: Start difference. First operand has 107 places, 152 transitions, 1131 flow. Second operand 5 states and 143 transitions. [2024-10-11 19:59:47,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 184 transitions, 1595 flow [2024-10-11 19:59:47,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 184 transitions, 1582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:47,459 INFO L231 Difference]: Finished difference. Result has 112 places, 163 transitions, 1248 flow [2024-10-11 19:59:47,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1248, PETRI_PLACES=112, PETRI_TRANSITIONS=163} [2024-10-11 19:59:47,461 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-10-11 19:59:47,461 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 163 transitions, 1248 flow [2024-10-11 19:59:47,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 19:59:47,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:47,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:47,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 19:59:47,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:47,662 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:47,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:47,662 INFO L85 PathProgramCache]: Analyzing trace with hash -601592754, now seen corresponding path program 2 times [2024-10-11 19:59:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:47,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247323077] [2024-10-11 19:59:47,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:59:47,663 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 19:59:47,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:47,664 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:47,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 19:59:47,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 19:59:47,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:47,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:59:47,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:59:47,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:47,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:47,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247323077] [2024-10-11 19:59:47,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247323077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:47,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:47,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:47,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900440922] [2024-10-11 19:59:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:47,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:59:47,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:47,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:59:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:59:47,767 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-10-11 19:59:47,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 163 transitions, 1248 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:47,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:47,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-10-11 19:59:47,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:48,582 INFO L124 PetriNetUnfolderBase]: 2973/5715 cut-off events. [2024-10-11 19:59:48,582 INFO L125 PetriNetUnfolderBase]: For 5715/5961 co-relation queries the response was YES. [2024-10-11 19:59:48,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16800 conditions, 5715 events. 2973/5715 cut-off events. For 5715/5961 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 41048 event pairs, 1145 based on Foata normal form. 54/5291 useless extension candidates. Maximal degree in co-relation 16579. Up to 2317 conditions per place. [2024-10-11 19:59:48,618 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 158 selfloop transitions, 2 changer transitions 1/184 dead transitions. [2024-10-11 19:59:48,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 184 transitions, 1694 flow [2024-10-11 19:59:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:59:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:59:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-10-11 19:59:48,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6289308176100629 [2024-10-11 19:59:48,619 INFO L175 Difference]: Start difference. First operand has 112 places, 163 transitions, 1248 flow. Second operand 3 states and 100 transitions. [2024-10-11 19:59:48,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 184 transitions, 1694 flow [2024-10-11 19:59:48,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 184 transitions, 1694 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:59:48,638 INFO L231 Difference]: Finished difference. Result has 115 places, 164 transitions, 1260 flow [2024-10-11 19:59:48,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1260, PETRI_PLACES=115, PETRI_TRANSITIONS=164} [2024-10-11 19:59:48,639 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 63 predicate places. [2024-10-11 19:59:48,639 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 164 transitions, 1260 flow [2024-10-11 19:59:48,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:48,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:48,640 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 19:59:48,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-11 19:59:48,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:48,840 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:59:48,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:48,841 INFO L85 PathProgramCache]: Analyzing trace with hash 620171754, now seen corresponding path program 3 times [2024-10-11 19:59:48,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:48,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949812833] [2024-10-11 19:59:48,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:59:48,841 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 19:59:48,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:48,844 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:48,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 19:59:49,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 19:59:49,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:49,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 19:59:49,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:49,193 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 19:59:49,861 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 19:59:49,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:51,960 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 19:59:51,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949812833] [2024-10-11 19:59:51,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949812833] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:51,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:51,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 19:59:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873643826] [2024-10-11 19:59:51,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:51,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 19:59:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:51,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 19:59:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 19:59:55,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-11 19:59:55,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 164 transitions, 1260 flow. Second operand has 26 states, 26 states have (on average 20.76923076923077) internal successors, (540), 26 states have internal predecessors, (540), 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 19:59:55,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:55,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-11 19:59:55,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:05,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:06,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:08,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:09,685 WARN L539 Checker$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 20:00:10,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:12,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:13,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:15,292 WARN L539 Checker$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 20:00:16,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:20,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:22,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:23,150 WARN L539 Checker$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 20:00:24,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:26,561 WARN L539 Checker$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 20:00:28,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:29,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:32,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:34,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:36,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:37,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:00:38,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []