./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-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:45:16,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:45:16,605 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:45:16,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:45:16,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:45:16,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:45:16,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:45:16,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:45:16,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:45:16,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:45:16,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:45:16,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:45:16,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:45:16,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:45:16,647 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:45:16,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:45:16,651 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:45:16,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:45:16,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:45:16,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:45:16,652 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:45:16,653 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:45:16,653 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:45:16,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:45:16,653 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:45:16,653 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:45:16,654 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:45:16,654 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:45:16,654 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:45:16,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:45:16,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:45:16,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:45:16,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:45:16,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:45:16,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:45:16,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:45:16,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:45:16,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:45:16,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:45:16,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:45:16,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:45:16,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:45:16,659 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-10-13 12:45:16,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:45:16,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:45:16,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:45:16,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:45:16,967 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:45:16,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-13 12:45:18,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:45:18,676 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:45:18,676 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-13 12:45:18,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/439c5520f/ce430b0b97164cdd86bad47f84b3f85f/FLAGd7512281c [2024-10-13 12:45:19,069 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/439c5520f/ce430b0b97164cdd86bad47f84b3f85f [2024-10-13 12:45:19,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:45:19,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:45:19,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:45:19,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:45:19,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:45:19,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:45:19" (1/1) ... [2024-10-13 12:45:19,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b03eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:19, skipping insertion in model container [2024-10-13 12:45:19,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:45:19" (1/1) ... [2024-10-13 12:45:19,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:45:19,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:45:19,367 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) [2024-10-13 12:45:19,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@181846fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:19, skipping insertion in model container [2024-10-13 12:45:19,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:45:19,368 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:45:19,370 INFO L158 Benchmark]: Toolchain (without parser) took 296.24ms. Allocated memory is still 157.3MB. Free memory was 100.6MB in the beginning and 89.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:45:19,371 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:45:19,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.05ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 89.3MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:45:19,372 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.05ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 89.3MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:45:21,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:45:21,540 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:45:21,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:45:21,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:45:21,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:45:21,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:45:21,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:45:21,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:45:21,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:45:21,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:45:21,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:45:21,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:45:21,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:45:21,585 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:45:21,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:45:21,585 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:45:21,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:45:21,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:45:21,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:45:21,586 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:45:21,592 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:45:21,592 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:45:21,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:45:21,593 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:45:21,593 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:45:21,593 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:45:21,594 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:45:21,594 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:45:21,594 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:45:21,594 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:45:21,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:45:21,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:45:21,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:45:21,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:45:21,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:45:21,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:45:21,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:45:21,597 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:45:21,598 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:45:21,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:45:21,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:45:21,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:45:21,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:45:21,599 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:45:21,599 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-10-13 12:45:21,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:45:21,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:45:22,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:45:22,001 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:45:22,001 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:45:22,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-13 12:45:23,646 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:45:23,838 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:45:23,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-13 12:45:23,854 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d5a9f27/96be1fb5c5b141d583736fd4b8fd430a/FLAG81f6655e5 [2024-10-13 12:45:23,870 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d5a9f27/96be1fb5c5b141d583736fd4b8fd430a [2024-10-13 12:45:23,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:45:23,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:45:23,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:45:23,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:45:23,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:45:23,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:45:23" (1/1) ... [2024-10-13 12:45:23,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6251a63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:23, skipping insertion in model container [2024-10-13 12:45:23,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:45:23" (1/1) ... [2024-10-13 12:45:23,909 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:45:24,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:45:24,195 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:45:24,201 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:45:24,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:45:24,238 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:45:24,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:45:24,294 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:45:24,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24 WrapperNode [2024-10-13 12:45:24,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:45:24,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:45:24,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:45:24,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:45:24,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,355 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 184 [2024-10-13 12:45:24,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:45:24,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:45:24,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:45:24,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:45:24,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,375 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,401 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-10-13 12:45:24,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:45:24,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:45:24,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:45:24,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:45:24,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (1/1) ... [2024-10-13 12:45:24,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:45:24,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:45:24,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:45:24,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:45:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:45:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:45:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:45:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:45:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:45:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:45:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:45:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:45:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:45:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:45:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:45:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:45:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:45:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:45:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:45:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:45:24,538 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:45:24,692 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:45:24,694 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:45:25,426 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:45:25,426 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:45:25,757 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:45:25,757 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-13 12:45:25,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:45:25 BoogieIcfgContainer [2024-10-13 12:45:25,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:45:25,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:45:25,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:45:25,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:45:25,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:45:23" (1/3) ... [2024-10-13 12:45:25,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d548d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:45:25, skipping insertion in model container [2024-10-13 12:45:25,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:45:24" (2/3) ... [2024-10-13 12:45:25,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d548d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:45:25, skipping insertion in model container [2024-10-13 12:45:25,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:45:25" (3/3) ... [2024-10-13 12:45:25,766 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2024-10-13 12:45:25,785 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:45:25,786 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-13 12:45:25,786 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:45:25,862 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:45:25,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 181 flow [2024-10-13 12:45:25,945 INFO L124 PetriNetUnfolderBase]: 7/77 cut-off events. [2024-10-13 12:45:25,947 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:45:25,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 7/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-10-13 12:45:25,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 80 transitions, 181 flow [2024-10-13 12:45:25,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 76 transitions, 170 flow [2024-10-13 12:45:25,969 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:45:25,977 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;@3351e422, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:45:25,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-10-13 12:45:25,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:45:25,990 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:45:25,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:45:25,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:45:25,991 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:45:25,992 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-13 12:45:25,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:45:25,997 INFO L85 PathProgramCache]: Analyzing trace with hash 748853, now seen corresponding path program 1 times [2024-10-13 12:45:26,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:45:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295049598] [2024-10-13 12:45:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:45:26,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:45:26,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:45:26,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:45:26,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-13 12:45:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:45:26,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:45:26,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:45:26,179 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 [2024-10-13 12:45:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:26,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:45:26,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:45:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295049598] [2024-10-13 12:45:26,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295049598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:45:26,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:45:26,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:45:26,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98667611] [2024-10-13 12:45:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:45:26,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:45:26,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:45:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:45:26,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:45:26,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-13 12:45:26,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-10-13 12:45:26,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:45:26,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-13 12:45:26,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:45:26,597 INFO L124 PetriNetUnfolderBase]: 203/513 cut-off events. [2024-10-13 12:45:26,597 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-13 12:45:26,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 513 events. 203/513 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2754 event pairs, 124 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 732. Up to 294 conditions per place. [2024-10-13 12:45:26,606 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 31 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-10-13 12:45:26,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 224 flow [2024-10-13 12:45:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:45:26,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:45:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-10-13 12:45:26,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-10-13 12:45:26,624 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 170 flow. Second operand 3 states and 161 transitions. [2024-10-13 12:45:26,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 224 flow [2024-10-13 12:45:26,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 212 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:45:26,631 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 150 flow [2024-10-13 12:45:26,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-10-13 12:45:26,639 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -10 predicate places. [2024-10-13 12:45:26,639 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 150 flow [2024-10-13 12:45:26,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-10-13 12:45:26,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:45:26,640 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:45:26,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-13 12:45:26,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:45:26,844 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-13 12:45:26,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:45:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash 748854, now seen corresponding path program 1 times [2024-10-13 12:45:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:45:26,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925174591] [2024-10-13 12:45:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:45:26,846 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 [2024-10-13 12:45:26,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:45:26,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:45:26,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-13 12:45:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:45:26,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:45:26,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:45:26,922 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 [2024-10-13 12:45:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:27,007 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:45:27,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:45:27,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925174591] [2024-10-13 12:45:27,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925174591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:45:27,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:45:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:45:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847783120] [2024-10-13 12:45:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:45:27,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:45:27,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:45:27,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:45:27,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:45:27,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-13 12:45:27,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2024-10-13 12:45:27,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:45:27,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-13 12:45:27,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:45:27,605 INFO L124 PetriNetUnfolderBase]: 207/525 cut-off events. [2024-10-13 12:45:27,605 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 12:45:27,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 525 events. 207/525 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2791 event pairs, 124 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 801. Up to 311 conditions per place. [2024-10-13 12:45:27,611 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 36 selfloop transitions, 13 changer transitions 0/82 dead transitions. [2024-10-13 12:45:27,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 274 flow [2024-10-13 12:45:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:45:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:45:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-10-13 12:45:27,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.678125 [2024-10-13 12:45:27,615 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 150 flow. Second operand 4 states and 217 transitions. [2024-10-13 12:45:27,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 274 flow [2024-10-13 12:45:27,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:45:27,618 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 254 flow [2024-10-13 12:45:27,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2024-10-13 12:45:27,619 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2024-10-13 12:45:27,619 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 254 flow [2024-10-13 12:45:27,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2024-10-13 12:45:27,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:45:27,620 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:45:27,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-13 12:45:27,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:45:27,823 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-13 12:45:27,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:45:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash 719672954, now seen corresponding path program 1 times [2024-10-13 12:45:27,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:45:27,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817598737] [2024-10-13 12:45:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:45:27,827 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 [2024-10-13 12:45:27,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:45:27,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:45:27,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-13 12:45:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:45:27,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:45:27,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:45:27,908 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 [2024-10-13 12:45:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:28,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:45:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:28,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:45:28,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817598737] [2024-10-13 12:45:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817598737] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:45:28,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:45:28,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:45:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686054486] [2024-10-13 12:45:28,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:45:28,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:45:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:45:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:45:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:45:29,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-13 12:45:29,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 254 flow. Second operand has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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) [2024-10-13 12:45:29,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:45:29,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-13 12:45:29,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:45:32,061 INFO L124 PetriNetUnfolderBase]: 219/561 cut-off events. [2024-10-13 12:45:32,061 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-13 12:45:32,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 561 events. 219/561 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3041 event pairs, 124 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 818. Up to 314 conditions per place. [2024-10-13 12:45:32,067 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 36 selfloop transitions, 49 changer transitions 0/118 dead transitions. [2024-10-13 12:45:32,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 586 flow [2024-10-13 12:45:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:45:32,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:45:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 507 transitions. [2024-10-13 12:45:32,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63375 [2024-10-13 12:45:32,073 INFO L175 Difference]: Start difference. First operand has 73 places, 82 transitions, 254 flow. Second operand 10 states and 507 transitions. [2024-10-13 12:45:32,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 586 flow [2024-10-13 12:45:32,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 118 transitions, 586 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:45:32,081 INFO L231 Difference]: Finished difference. Result has 85 places, 118 transitions, 580 flow [2024-10-13 12:45:32,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=580, PETRI_PLACES=85, PETRI_TRANSITIONS=118} [2024-10-13 12:45:32,083 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2024-10-13 12:45:32,083 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 118 transitions, 580 flow [2024-10-13 12:45:32,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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) [2024-10-13 12:45:32,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:45:32,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:45:32,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-13 12:45:32,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:45:32,285 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-13 12:45:32,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:45:32,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2088541764, now seen corresponding path program 1 times [2024-10-13 12:45:32,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:45:32,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844995941] [2024-10-13 12:45:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:45:32,286 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 [2024-10-13 12:45:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:45:32,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:45:32,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-13 12:45:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:45:32,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:45:32,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:45:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:32,439 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:45:32,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:45:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844995941] [2024-10-13 12:45:32,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844995941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:45:32,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:45:32,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:45:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214871763] [2024-10-13 12:45:32,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:45:32,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:45:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:45:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:45:32,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:45:32,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2024-10-13 12:45:32,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 118 transitions, 580 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:45:32,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:45:32,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2024-10-13 12:45:32,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:45:32,943 INFO L124 PetriNetUnfolderBase]: 450/1109 cut-off events. [2024-10-13 12:45:32,943 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-10-13 12:45:32,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2027 conditions, 1109 events. 450/1109 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6338 event pairs, 248 based on Foata normal form. 4/834 useless extension candidates. Maximal degree in co-relation 1911. Up to 418 conditions per place. [2024-10-13 12:45:32,952 INFO L140 encePairwiseOnDemand]: 64/80 looper letters, 88 selfloop transitions, 24 changer transitions 1/149 dead transitions. [2024-10-13 12:45:32,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 149 transitions, 886 flow [2024-10-13 12:45:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:45:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:45:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 346 transitions. [2024-10-13 12:45:32,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7208333333333333 [2024-10-13 12:45:32,955 INFO L175 Difference]: Start difference. First operand has 85 places, 118 transitions, 580 flow. Second operand 6 states and 346 transitions. [2024-10-13 12:45:32,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 149 transitions, 886 flow [2024-10-13 12:45:32,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 149 transitions, 757 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-10-13 12:45:32,962 INFO L231 Difference]: Finished difference. Result has 90 places, 123 transitions, 568 flow [2024-10-13 12:45:32,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=90, PETRI_TRANSITIONS=123} [2024-10-13 12:45:32,963 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2024-10-13 12:45:32,963 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 123 transitions, 568 flow [2024-10-13 12:45:32,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:45:32,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:45:32,964 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-13 12:45:32,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-13 12:45:33,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:45:33,165 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-13 12:45:33,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:45:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1905560646, now seen corresponding path program 2 times [2024-10-13 12:45:33,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:45:33,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952184972] [2024-10-13 12:45:33,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:45:33,166 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 [2024-10-13 12:45:33,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:45:33,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:45:33,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-13 12:45:33,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:45:33,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:45:33,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:45:33,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:45:33,272 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 [2024-10-13 12:45:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:33,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:45:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:34,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:45:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952184972] [2024-10-13 12:45:34,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952184972] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:45:34,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:45:34,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:45:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987016569] [2024-10-13 12:45:34,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:45:34,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:45:34,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:45:34,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:45:34,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:45:37,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-13 12:45:37,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 123 transitions, 568 flow. Second operand has 14 states, 14 states have (on average 42.57142857142857) internal successors, (596), 14 states have internal predecessors, (596), 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) [2024-10-13 12:45:37,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:45:37,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-13 12:45:37,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:45:57,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-13 12:46:00,306 INFO L124 PetriNetUnfolderBase]: 415/1188 cut-off events. [2024-10-13 12:46:00,306 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-10-13 12:46:00,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2386 conditions, 1188 events. 415/1188 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7903 event pairs, 248 based on Foata normal form. 24/895 useless extension candidates. Maximal degree in co-relation 2000. Up to 585 conditions per place. [2024-10-13 12:46:00,317 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 40 selfloop transitions, 122 changer transitions 0/195 dead transitions. [2024-10-13 12:46:00,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 195 transitions, 1300 flow [2024-10-13 12:46:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:46:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:46:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1083 transitions. [2024-10-13 12:46:00,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153409090909091 [2024-10-13 12:46:00,322 INFO L175 Difference]: Start difference. First operand has 90 places, 123 transitions, 568 flow. Second operand 22 states and 1083 transitions. [2024-10-13 12:46:00,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 195 transitions, 1300 flow [2024-10-13 12:46:00,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 195 transitions, 1294 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 12:46:00,330 INFO L231 Difference]: Finished difference. Result has 117 places, 195 transitions, 1328 flow [2024-10-13 12:46:00,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1328, PETRI_PLACES=117, PETRI_TRANSITIONS=195} [2024-10-13 12:46:00,333 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-10-13 12:46:00,334 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 195 transitions, 1328 flow [2024-10-13 12:46:00,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 42.57142857142857) internal successors, (596), 14 states have internal predecessors, (596), 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) [2024-10-13 12:46:00,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:46:00,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:46:00,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-13 12:46:00,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:46:00,537 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-13 12:46:00,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:46:00,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1375548074, now seen corresponding path program 1 times [2024-10-13 12:46:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:46:00,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122279368] [2024-10-13 12:46:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:46:00,538 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 [2024-10-13 12:46:00,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:46:00,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:46:00,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-13 12:46:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:46:00,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:46:00,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:46:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:46:00,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:46:00,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:46:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122279368] [2024-10-13 12:46:00,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122279368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:46:00,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:46:00,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:46:00,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977892878] [2024-10-13 12:46:00,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:46:00,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:46:00,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:46:00,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:46:00,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:46:00,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2024-10-13 12:46:00,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 195 transitions, 1328 flow. Second operand has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:46:00,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:46:00,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2024-10-13 12:46:00,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:46:01,259 INFO L124 PetriNetUnfolderBase]: 451/1155 cut-off events. [2024-10-13 12:46:01,260 INFO L125 PetriNetUnfolderBase]: For 448/479 co-relation queries the response was YES. [2024-10-13 12:46:01,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2590 conditions, 1155 events. 451/1155 cut-off events. For 448/479 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6923 event pairs, 248 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 2429. Up to 477 conditions per place. [2024-10-13 12:46:01,269 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 137 selfloop transitions, 42 changer transitions 3/218 dead transitions. [2024-10-13 12:46:01,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 218 transitions, 1754 flow [2024-10-13 12:46:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:46:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:46:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 339 transitions. [2024-10-13 12:46:01,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-10-13 12:46:01,273 INFO L175 Difference]: Start difference. First operand has 117 places, 195 transitions, 1328 flow. Second operand 6 states and 339 transitions. [2024-10-13 12:46:01,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 218 transitions, 1754 flow [2024-10-13 12:46:01,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 218 transitions, 1444 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-10-13 12:46:01,287 INFO L231 Difference]: Finished difference. Result has 115 places, 197 transitions, 1118 flow [2024-10-13 12:46:01,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1118, PETRI_PLACES=115, PETRI_TRANSITIONS=197} [2024-10-13 12:46:01,290 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 36 predicate places. [2024-10-13 12:46:01,291 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 197 transitions, 1118 flow [2024-10-13 12:46:01,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:46:01,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:46:01,291 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:46:01,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-13 12:46:01,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:46:01,492 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-13 12:46:01,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:46:01,493 INFO L85 PathProgramCache]: Analyzing trace with hash 932352663, now seen corresponding path program 1 times [2024-10-13 12:46:01,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:46:01,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64162770] [2024-10-13 12:46:01,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:46:01,493 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 [2024-10-13 12:46:01,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:46:01,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:46:01,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-13 12:46:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:46:01,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:46:01,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:46:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:46:01,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:46:01,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:46:01,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64162770] [2024-10-13 12:46:01,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64162770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:46:01,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:46:01,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:46:01,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928879957] [2024-10-13 12:46:01,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:46:01,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:46:01,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:46:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:46:01,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:46:01,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2024-10-13 12:46:01,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 197 transitions, 1118 flow. Second operand has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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) [2024-10-13 12:46:01,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:46:01,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2024-10-13 12:46:01,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:46:02,108 INFO L124 PetriNetUnfolderBase]: 418/916 cut-off events. [2024-10-13 12:46:02,108 INFO L125 PetriNetUnfolderBase]: For 715/772 co-relation queries the response was YES. [2024-10-13 12:46:02,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 916 events. 418/916 cut-off events. For 715/772 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4532 event pairs, 248 based on Foata normal form. 0/754 useless extension candidates. Maximal degree in co-relation 2230. Up to 461 conditions per place. [2024-10-13 12:46:02,115 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 115 selfloop transitions, 35 changer transitions 29/215 dead transitions. [2024-10-13 12:46:02,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 215 transitions, 1536 flow [2024-10-13 12:46:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:46:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:46:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 336 transitions. [2024-10-13 12:46:02,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-13 12:46:02,118 INFO L175 Difference]: Start difference. First operand has 115 places, 197 transitions, 1118 flow. Second operand 6 states and 336 transitions. [2024-10-13 12:46:02,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 215 transitions, 1536 flow [2024-10-13 12:46:02,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 215 transitions, 1458 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:46:02,126 INFO L231 Difference]: Finished difference. Result has 119 places, 186 transitions, 1040 flow [2024-10-13 12:46:02,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1040, PETRI_PLACES=119, PETRI_TRANSITIONS=186} [2024-10-13 12:46:02,127 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 40 predicate places. [2024-10-13 12:46:02,127 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 186 transitions, 1040 flow [2024-10-13 12:46:02,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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) [2024-10-13 12:46:02,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:46:02,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:46:02,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-13 12:46:02,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:46:02,328 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-13 12:46:02,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:46:02,329 INFO L85 PathProgramCache]: Analyzing trace with hash -720143873, now seen corresponding path program 1 times [2024-10-13 12:46:02,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:46:02,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707152090] [2024-10-13 12:46:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:46:02,331 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 [2024-10-13 12:46:02,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:46:02,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:46:02,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-13 12:46:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:46:02,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:46:02,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:46:02,461 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 [2024-10-13 12:46:02,499 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:46:02,500 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 [2024-10-13 12:46:02,544 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:46:02,545 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 [2024-10-13 12:46:02,569 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-13 12:46:02,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-13 12:46:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 12:46:02,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:46:02,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:46:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707152090] [2024-10-13 12:46:02,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707152090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:46:02,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:46:02,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:46:02,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879717458] [2024-10-13 12:46:02,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:46:02,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:46:02,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:46:02,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:46:02,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:46:02,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 80 [2024-10-13 12:46:02,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 186 transitions, 1040 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-10-13 12:46:02,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:46:02,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 80 [2024-10-13 12:46:02,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:46:02,982 INFO L124 PetriNetUnfolderBase]: 469/1025 cut-off events. [2024-10-13 12:46:02,982 INFO L125 PetriNetUnfolderBase]: For 476/556 co-relation queries the response was YES. [2024-10-13 12:46:02,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 1025 events. 469/1025 cut-off events. For 476/556 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5914 event pairs, 306 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 2280. Up to 630 conditions per place. [2024-10-13 12:46:02,991 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 131 selfloop transitions, 21 changer transitions 0/183 dead transitions. [2024-10-13 12:46:02,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 183 transitions, 1338 flow [2024-10-13 12:46:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:46:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:46:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-10-13 12:46:02,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-10-13 12:46:02,993 INFO L175 Difference]: Start difference. First operand has 119 places, 186 transitions, 1040 flow. Second operand 5 states and 214 transitions. [2024-10-13 12:46:02,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 183 transitions, 1338 flow [2024-10-13 12:46:02,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 183 transitions, 1102 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-10-13 12:46:03,001 INFO L231 Difference]: Finished difference. Result has 99 places, 183 transitions, 840 flow [2024-10-13 12:46:03,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=99, PETRI_TRANSITIONS=183} [2024-10-13 12:46:03,002 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2024-10-13 12:46:03,002 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 183 transitions, 840 flow [2024-10-13 12:46:03,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-10-13 12:46:03,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:46:03,003 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:46:03,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-13 12:46:03,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:46:03,204 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-13 12:46:03,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:46:03,204 INFO L85 PathProgramCache]: Analyzing trace with hash -720143872, now seen corresponding path program 1 times [2024-10-13 12:46:03,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:46:03,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098702862] [2024-10-13 12:46:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:46:03,205 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 [2024-10-13 12:46:03,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:46:03,206 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:46:03,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-13 12:46:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:46:03,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 12:46:03,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:46:03,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:46:03,383 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 [2024-10-13 12:46:03,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:46:03,559 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 [2024-10-13 12:46:03,584 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:46:03,584 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 [2024-10-13 12:46:03,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:46:03,664 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 [2024-10-13 12:46:03,674 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:46:03,674 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 [2024-10-13 12:46:03,748 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-10-13 12:46:03,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-10-13 12:46:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:46:03,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:46:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:46:05,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:46:05,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098702862] [2024-10-13 12:46:05,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098702862] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:46:05,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:46:05,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-13 12:46:05,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273996142] [2024-10-13 12:46:05,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:46:05,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:46:05,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:46:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:46:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-13 12:46:15,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:46:19,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:46:26,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:46:34,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:46:34,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 80 [2024-10-13 12:46:34,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 183 transitions, 840 flow. Second operand has 16 states, 16 states have (on average 21.0) internal successors, (336), 16 states have internal predecessors, (336), 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) [2024-10-13 12:46:34,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:46:34,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 80 [2024-10-13 12:46:34,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:46:39,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:46:45,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:46:48,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]