./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 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/unroll-cond-5.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 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:27:53,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:27:53,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:27:53,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:27:53,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:27:53,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:27:53,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:27:53,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:27:53,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:27:53,582 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:27:53,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:27:53,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:27:53,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:27:53,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:27:53,585 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:27:53,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:27:53,585 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:27:53,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:27:53,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:27:53,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:27:53,588 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:27:53,589 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:27:53,589 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:27:53,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:27:53,590 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:27:53,590 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:27:53,590 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:27:53,590 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:27:53,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:27:53,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:27:53,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:27:53,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:27:53,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:27:53,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:27:53,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:27:53,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:27:53,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:27:53,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:27:53,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:27:53,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:27:53,594 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:27:53,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:27:53,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2024-10-24 19:27:53,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:27:53,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:27:53,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:27:53,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:27:53,895 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:27:53,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-24 19:27:55,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:27:55,506 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:27:55,506 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-24 19:27:55,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3138ebe9/644611a4d459417e8db53d63fc096118/FLAGa093c5fe5 [2024-10-24 19:27:55,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3138ebe9/644611a4d459417e8db53d63fc096118 [2024-10-24 19:27:55,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:27:55,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:27:55,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:27:55,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:27:55,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:27:55,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:27:55" (1/1) ... [2024-10-24 19:27:55,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ab6805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:55, skipping insertion in model container [2024-10-24 19:27:55,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:27:55" (1/1) ... [2024-10-24 19:27:55,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:27:56,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:27:56,149 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) [2024-10-24 19:27:56,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5067abc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:56, skipping insertion in model container [2024-10-24 19:27:56,150 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:27:56,150 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:27:56,152 INFO L158 Benchmark]: Toolchain (without parser) took 265.60ms. Allocated memory is still 144.7MB. Free memory was 91.8MB in the beginning and 79.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:27:56,152 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 144.7MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:27:56,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.92ms. Allocated memory is still 144.7MB. Free memory was 91.4MB in the beginning and 79.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:27:56,154 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 144.7MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.92ms. Allocated memory is still 144.7MB. Free memory was 91.4MB in the beginning and 79.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 124]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/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/unroll-cond-5.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 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:27:58,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:27:58,284 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:27:58,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:27:58,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:27:58,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:27:58,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:27:58,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:27:58,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:27:58,332 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:27:58,333 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:27:58,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:27:58,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:27:58,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:27:58,335 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:27:58,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:27:58,338 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:27:58,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:27:58,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:27:58,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:27:58,340 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:27:58,340 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:27:58,341 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:27:58,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:27:58,342 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:27:58,342 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:27:58,342 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:27:58,343 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:27:58,343 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:27:58,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:27:58,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:27:58,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:27:58,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:27:58,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:27:58,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:27:58,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:27:58,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:27:58,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:27:58,347 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:27:58,347 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:27:58,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:27:58,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:27:58,348 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:27:58,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:27:58,348 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:27:58,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2024-10-24 19:27:58,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:27:58,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:27:58,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:27:58,712 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:27:58,712 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:27:58,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-24 19:28:00,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:28:00,491 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:28:00,491 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-24 19:28:00,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e3dd19c/949f2ee2e02e4d7281240e5075acaec1/FLAGa8df87730 [2024-10-24 19:28:00,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e3dd19c/949f2ee2e02e4d7281240e5075acaec1 [2024-10-24 19:28:00,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:28:00,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:28:00,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:28:00,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:28:00,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:28:00,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:28:00" (1/1) ... [2024-10-24 19:28:00,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c088aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:00, skipping insertion in model container [2024-10-24 19:28:00,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:28:00" (1/1) ... [2024-10-24 19:28:00,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:28:01,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:28:01,191 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:28:01,196 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:28:01,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:28:01,238 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:28:01,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:28:01,297 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:28:01,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01 WrapperNode [2024-10-24 19:28:01,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:28:01,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:28:01,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:28:01,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:28:01,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,361 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 197 [2024-10-24 19:28:01,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:28:01,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:28:01,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:28:01,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:28:01,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,382 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,402 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-24 19:28:01,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:28:01,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:28:01,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:28:01,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:28:01,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (1/1) ... [2024-10-24 19:28:01,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:28:01,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:28:01,489 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) [2024-10-24 19:28:01,492 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 [2024-10-24 19:28:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:28:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:28:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:28:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:28:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:28:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:28:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:28:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:28:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:28:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:28:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:28:01,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:28:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:28:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:28:01,551 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:28:01,697 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:28:01,700 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:28:02,291 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:28:02,294 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:28:02,651 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:28:02,651 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 19:28:02,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:28:02 BoogieIcfgContainer [2024-10-24 19:28:02,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:28:02,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:28:02,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:28:02,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:28:02,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:28:00" (1/3) ... [2024-10-24 19:28:02,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec879dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:28:02, skipping insertion in model container [2024-10-24 19:28:02,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:01" (2/3) ... [2024-10-24 19:28:02,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec879dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:28:02, skipping insertion in model container [2024-10-24 19:28:02,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:28:02" (3/3) ... [2024-10-24 19:28:02,663 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2024-10-24 19:28:02,692 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:28:02,692 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-24 19:28:02,692 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:28:02,762 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:28:02,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 64 transitions, 142 flow [2024-10-24 19:28:02,829 INFO L124 PetriNetUnfolderBase]: 7/62 cut-off events. [2024-10-24 19:28:02,829 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:28:02,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 62 events. 7/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 179 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-10-24 19:28:02,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 64 transitions, 142 flow [2024-10-24 19:28:02,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 61 transitions, 134 flow [2024-10-24 19:28:02,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:28:02,858 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;@3fd4fbc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:28:02,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-10-24 19:28:02,862 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:28:02,862 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:28:02,862 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:28:02,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:02,863 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:28:02,864 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:02,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:02,869 INFO L85 PathProgramCache]: Analyzing trace with hash 667349, now seen corresponding path program 1 times [2024-10-24 19:28:02,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:02,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290609156] [2024-10-24 19:28:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:02,882 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 [2024-10-24 19:28:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:02,916 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) [2024-10-24 19:28:02,917 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 [2024-10-24 19:28:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:03,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:28:03,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:03,057 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 [2024-10-24 19:28:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:03,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:03,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290609156] [2024-10-24 19:28:03,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290609156] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:03,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:03,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:28:03,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603210495] [2024-10-24 19:28:03,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:03,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:28:03,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:03,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:28:03,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:28:03,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-24 19:28:03,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:03,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:03,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-24 19:28:03,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:03,420 INFO L124 PetriNetUnfolderBase]: 218/540 cut-off events. [2024-10-24 19:28:03,420 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-24 19:28:03,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 540 events. 218/540 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3143 event pairs, 141 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 804. Up to 347 conditions per place. [2024-10-24 19:28:03,428 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 30 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-24 19:28:03,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 192 flow [2024-10-24 19:28:03,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:28:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:28:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-10-24 19:28:03,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-10-24 19:28:03,459 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 134 flow. Second operand 3 states and 121 transitions. [2024-10-24 19:28:03,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 192 flow [2024-10-24 19:28:03,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:28:03,468 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 124 flow [2024-10-24 19:28:03,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-10-24 19:28:03,476 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-10-24 19:28:03,478 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 124 flow [2024-10-24 19:28:03,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:03,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:03,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:28:03,484 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 [2024-10-24 19:28:03,681 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 [2024-10-24 19:28:03,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:03,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash 667350, now seen corresponding path program 1 times [2024-10-24 19:28:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954950703] [2024-10-24 19:28:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:03,683 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 [2024-10-24 19:28:03,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:03,687 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) [2024-10-24 19:28:03,689 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 [2024-10-24 19:28:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:03,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:28:03,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:03,770 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 [2024-10-24 19:28:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:03,884 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:03,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954950703] [2024-10-24 19:28:03,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954950703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:03,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:03,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:28:03,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916209803] [2024-10-24 19:28:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:03,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:28:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:28:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:28:04,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-24 19:28:04,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:04,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:04,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-24 19:28:04,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:04,414 INFO L124 PetriNetUnfolderBase]: 218/542 cut-off events. [2024-10-24 19:28:04,414 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 19:28:04,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 542 events. 218/542 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3142 event pairs, 141 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 885. Up to 351 conditions per place. [2024-10-24 19:28:04,423 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 33 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-24 19:28:04,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 198 flow [2024-10-24 19:28:04,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:28:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:28:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-10-24 19:28:04,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-10-24 19:28:04,427 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 124 flow. Second operand 3 states and 124 transitions. [2024-10-24 19:28:04,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 198 flow [2024-10-24 19:28:04,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:28:04,431 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 134 flow [2024-10-24 19:28:04,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2024-10-24 19:28:04,433 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-10-24 19:28:04,434 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 134 flow [2024-10-24 19:28:04,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:04,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:04,434 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:28:04,440 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 [2024-10-24 19:28:04,635 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 [2024-10-24 19:28:04,635 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:04,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash 641344908, now seen corresponding path program 1 times [2024-10-24 19:28:04,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:04,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999948604] [2024-10-24 19:28:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:04,637 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 [2024-10-24 19:28:04,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:04,639 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) [2024-10-24 19:28:04,640 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 [2024-10-24 19:28:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:04,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:28:04,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:04,703 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 [2024-10-24 19:28:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:04,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:05,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999948604] [2024-10-24 19:28:05,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999948604] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:05,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:05,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:28:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844143203] [2024-10-24 19:28:05,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:05,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:28:05,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:28:05,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:28:05,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-24 19:28:05,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 134 flow. Second operand has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:05,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:05,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-24 19:28:05,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:06,351 INFO L124 PetriNetUnfolderBase]: 221/551 cut-off events. [2024-10-24 19:28:06,351 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 19:28:06,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 551 events. 221/551 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3212 event pairs, 141 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 920. Up to 354 conditions per place. [2024-10-24 19:28:06,355 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 33 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-10-24 19:28:06,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 254 flow [2024-10-24 19:28:06,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:28:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:28:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions. [2024-10-24 19:28:06,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-10-24 19:28:06,360 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 134 flow. Second operand 9 states and 308 transitions. [2024-10-24 19:28:06,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 254 flow [2024-10-24 19:28:06,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:06,363 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 206 flow [2024-10-24 19:28:06,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=206, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-10-24 19:28:06,364 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-10-24 19:28:06,365 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 206 flow [2024-10-24 19:28:06,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:06,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:06,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:06,370 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 [2024-10-24 19:28:06,568 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 [2024-10-24 19:28:06,569 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:06,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:06,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1999930623, now seen corresponding path program 1 times [2024-10-24 19:28:06,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:06,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65631753] [2024-10-24 19:28:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:06,570 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 [2024-10-24 19:28:06,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:06,572 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) [2024-10-24 19:28:06,573 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 [2024-10-24 19:28:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:06,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:28:06,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:06,632 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 [2024-10-24 19:28:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:06,664 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:06,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65631753] [2024-10-24 19:28:06,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65631753] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:06,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:06,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:28:06,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933878178] [2024-10-24 19:28:06,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:06,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:28:06,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:06,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:28:06,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:28:06,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2024-10-24 19:28:06,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:06,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:06,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2024-10-24 19:28:06,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:06,959 INFO L124 PetriNetUnfolderBase]: 221/474 cut-off events. [2024-10-24 19:28:06,959 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-24 19:28:06,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 474 events. 221/474 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2291 event pairs, 141 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 847. Up to 349 conditions per place. [2024-10-24 19:28:06,964 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 38 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-10-24 19:28:06,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 272 flow [2024-10-24 19:28:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:28:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:28:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-10-24 19:28:06,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-10-24 19:28:06,969 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 206 flow. Second operand 4 states and 118 transitions. [2024-10-24 19:28:06,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 272 flow [2024-10-24 19:28:06,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 258 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:06,974 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 182 flow [2024-10-24 19:28:06,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2024-10-24 19:28:06,975 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2024-10-24 19:28:06,975 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 182 flow [2024-10-24 19:28:06,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:06,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:06,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:06,981 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 [2024-10-24 19:28:07,179 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 [2024-10-24 19:28:07,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:07,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:07,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1999930622, now seen corresponding path program 1 times [2024-10-24 19:28:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:07,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830401364] [2024-10-24 19:28:07,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:07,181 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 [2024-10-24 19:28:07,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:07,184 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) [2024-10-24 19:28:07,186 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 [2024-10-24 19:28:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:07,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:28:07,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:07,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:07,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-24 19:28:07,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:07,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:07,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830401364] [2024-10-24 19:28:07,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830401364] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:07,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:07,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-24 19:28:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216640807] [2024-10-24 19:28:07,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:07,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:28:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:07,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:28:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:28:08,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-24 19:28:08,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:08,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:08,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-24 19:28:08,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:08,877 INFO L124 PetriNetUnfolderBase]: 513/928 cut-off events. [2024-10-24 19:28:08,877 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-24 19:28:08,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 928 events. 513/928 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4777 event pairs, 169 based on Foata normal form. 0/789 useless extension candidates. Maximal degree in co-relation 1731. Up to 457 conditions per place. [2024-10-24 19:28:08,883 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 62 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2024-10-24 19:28:08,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 377 flow [2024-10-24 19:28:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:28:08,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:28:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2024-10-24 19:28:08,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6223958333333334 [2024-10-24 19:28:08,886 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 182 flow. Second operand 6 states and 239 transitions. [2024-10-24 19:28:08,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 377 flow [2024-10-24 19:28:08,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:28:08,890 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 203 flow [2024-10-24 19:28:08,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-10-24 19:28:08,891 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2024-10-24 19:28:08,891 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 203 flow [2024-10-24 19:28:08,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:08,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:08,892 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:08,899 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 [2024-10-24 19:28:09,092 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 [2024-10-24 19:28:09,093 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:09,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:09,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2082923706, now seen corresponding path program 1 times [2024-10-24 19:28:09,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:09,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243350887] [2024-10-24 19:28:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:09,094 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 [2024-10-24 19:28:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:09,098 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) [2024-10-24 19:28:09,099 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 [2024-10-24 19:28:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:09,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 19:28:09,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:09,198 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 [2024-10-24 19:28:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:09,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:10,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243350887] [2024-10-24 19:28:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243350887] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:10,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:10,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-24 19:28:10,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472813927] [2024-10-24 19:28:10,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:10,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:28:10,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:28:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:28:14,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-24 19:28:14,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 203 flow. Second operand has 11 states, 11 states have (on average 29.818181818181817) internal successors, (328), 11 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:14,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:14,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-24 19:28:14,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:16,776 INFO L124 PetriNetUnfolderBase]: 1285/2545 cut-off events. [2024-10-24 19:28:16,777 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-10-24 19:28:16,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 2545 events. 1285/2545 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16274 event pairs, 697 based on Foata normal form. 0/2275 useless extension candidates. Maximal degree in co-relation 3348. Up to 705 conditions per place. [2024-10-24 19:28:16,792 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 128 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-10-24 19:28:16,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 158 transitions, 707 flow [2024-10-24 19:28:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:28:16,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:28:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 422 transitions. [2024-10-24 19:28:16,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.659375 [2024-10-24 19:28:16,797 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 203 flow. Second operand 10 states and 422 transitions. [2024-10-24 19:28:16,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 158 transitions, 707 flow [2024-10-24 19:28:16,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 158 transitions, 698 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:28:16,801 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 264 flow [2024-10-24 19:28:16,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-10-24 19:28:16,804 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-10-24 19:28:16,806 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 264 flow [2024-10-24 19:28:16,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.818181818181817) internal successors, (328), 11 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:16,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:16,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:16,814 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 (7)] Ended with exit code 0 [2024-10-24 19:28:17,007 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 [2024-10-24 19:28:17,008 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:17,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2126774872, now seen corresponding path program 1 times [2024-10-24 19:28:17,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:17,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815475850] [2024-10-24 19:28:17,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:17,009 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 [2024-10-24 19:28:17,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:17,010 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) [2024-10-24 19:28:17,011 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 [2024-10-24 19:28:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:17,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:28:17,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:17,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:17,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-24 19:28:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:17,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:17,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815475850] [2024-10-24 19:28:17,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815475850] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:17,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:17,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-24 19:28:17,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585358494] [2024-10-24 19:28:17,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:17,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:28:17,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:17,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:28:17,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:28:17,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-10-24 19:28:17,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:17,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:17,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-10-24 19:28:17,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:18,809 INFO L124 PetriNetUnfolderBase]: 2777/4625 cut-off events. [2024-10-24 19:28:18,810 INFO L125 PetriNetUnfolderBase]: For 2145/2185 co-relation queries the response was YES. [2024-10-24 19:28:18,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10600 conditions, 4625 events. 2777/4625 cut-off events. For 2145/2185 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 26979 event pairs, 558 based on Foata normal form. 0/4045 useless extension candidates. Maximal degree in co-relation 8159. Up to 3178 conditions per place. [2024-10-24 19:28:18,841 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 74 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-10-24 19:28:18,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 93 transitions, 528 flow [2024-10-24 19:28:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:28:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:28:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-10-24 19:28:18,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-10-24 19:28:18,845 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 264 flow. Second operand 6 states and 197 transitions. [2024-10-24 19:28:18,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 93 transitions, 528 flow [2024-10-24 19:28:18,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 520 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:28:18,856 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 319 flow [2024-10-24 19:28:18,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-10-24 19:28:18,857 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-10-24 19:28:18,857 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 319 flow [2024-10-24 19:28:18,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:18,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:18,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:18,863 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 [2024-10-24 19:28:19,058 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 [2024-10-24 19:28:19,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:19,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1505510862, now seen corresponding path program 1 times [2024-10-24 19:28:19,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:19,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496560728] [2024-10-24 19:28:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:19,061 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 [2024-10-24 19:28:19,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:19,064 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) [2024-10-24 19:28:19,066 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 [2024-10-24 19:28:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:19,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 19:28:19,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:19,141 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 [2024-10-24 19:28:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:19,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:20,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:20,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496560728] [2024-10-24 19:28:20,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496560728] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:20,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:20,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-24 19:28:20,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60919134] [2024-10-24 19:28:20,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:20,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:28:20,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:28:20,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:28:22,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 64 [2024-10-24 19:28:22,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 319 flow. Second operand has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:22,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:22,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 64 [2024-10-24 19:28:22,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:24,834 INFO L124 PetriNetUnfolderBase]: 2347/3954 cut-off events. [2024-10-24 19:28:24,834 INFO L125 PetriNetUnfolderBase]: For 1936/2001 co-relation queries the response was YES. [2024-10-24 19:28:24,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9695 conditions, 3954 events. 2347/3954 cut-off events. For 1936/2001 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21905 event pairs, 1167 based on Foata normal form. 0/3696 useless extension candidates. Maximal degree in co-relation 7733. Up to 1431 conditions per place. [2024-10-24 19:28:24,856 INFO L140 encePairwiseOnDemand]: 41/64 looper letters, 103 selfloop transitions, 38 changer transitions 0/147 dead transitions. [2024-10-24 19:28:24,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 147 transitions, 839 flow [2024-10-24 19:28:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:28:24,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:28:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 338 transitions. [2024-10-24 19:28:24,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528125 [2024-10-24 19:28:24,859 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 319 flow. Second operand 10 states and 338 transitions. [2024-10-24 19:28:24,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 147 transitions, 839 flow [2024-10-24 19:28:24,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 147 transitions, 814 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:28:24,865 INFO L231 Difference]: Finished difference. Result has 81 places, 99 transitions, 560 flow [2024-10-24 19:28:24,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=560, PETRI_PLACES=81, PETRI_TRANSITIONS=99} [2024-10-24 19:28:24,866 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 20 predicate places. [2024-10-24 19:28:24,866 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 99 transitions, 560 flow [2024-10-24 19:28:24,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:24,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:24,867 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:28:24,875 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 (9)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:25,067 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 [2024-10-24 19:28:25,068 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:25,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:25,069 INFO L85 PathProgramCache]: Analyzing trace with hash -350320466, now seen corresponding path program 2 times [2024-10-24 19:28:25,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:25,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922080912] [2024-10-24 19:28:25,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:25,069 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 [2024-10-24 19:28:25,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:25,071 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) [2024-10-24 19:28:25,072 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 [2024-10-24 19:28:25,137 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:28:25,138 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:25,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:28:25,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:25,148 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 [2024-10-24 19:28:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:25,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:26,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:26,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922080912] [2024-10-24 19:28:26,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922080912] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:26,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:28:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418810601] [2024-10-24 19:28:26,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:26,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:28:26,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:28:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:28:27,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-24 19:28:27,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 99 transitions, 560 flow. Second operand has 14 states, 14 states have (on average 30.571428571428573) internal successors, (428), 14 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:27,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:27,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-24 19:28:27,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:29,998 INFO L124 PetriNetUnfolderBase]: 2162/3730 cut-off events. [2024-10-24 19:28:29,999 INFO L125 PetriNetUnfolderBase]: For 2660/2694 co-relation queries the response was YES. [2024-10-24 19:28:30,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10398 conditions, 3730 events. 2162/3730 cut-off events. For 2660/2694 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 21686 event pairs, 1566 based on Foata normal form. 6/3684 useless extension candidates. Maximal degree in co-relation 8203. Up to 3243 conditions per place. [2024-10-24 19:28:30,021 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 73 selfloop transitions, 29 changer transitions 0/117 dead transitions. [2024-10-24 19:28:30,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 117 transitions, 944 flow [2024-10-24 19:28:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 19:28:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-24 19:28:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 677 transitions. [2024-10-24 19:28:30,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037202380952381 [2024-10-24 19:28:30,025 INFO L175 Difference]: Start difference. First operand has 81 places, 99 transitions, 560 flow. Second operand 21 states and 677 transitions. [2024-10-24 19:28:30,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 117 transitions, 944 flow [2024-10-24 19:28:30,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 117 transitions, 919 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:28:30,035 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 803 flow [2024-10-24 19:28:30,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=803, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2024-10-24 19:28:30,036 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-10-24 19:28:30,037 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 803 flow [2024-10-24 19:28:30,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.571428571428573) internal successors, (428), 14 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:30,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:30,037 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:30,042 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 (10)] Ended with exit code 0 [2024-10-24 19:28:30,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2024-10-24 19:28:30,238 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:30,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:30,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1463770468, now seen corresponding path program 2 times [2024-10-24 19:28:30,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:30,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071092945] [2024-10-24 19:28:30,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:30,239 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 [2024-10-24 19:28:30,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:30,240 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2024-10-24 19:28:30,242 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 (11)] Waiting until timeout for monitored process [2024-10-24 19:28:30,300 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:28:30,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:30,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:28:30,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:30,317 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 [2024-10-24 19:28:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 19:28:30,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 19:28:31,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071092945] [2024-10-24 19:28:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071092945] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:31,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:31,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-24 19:28:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199233071] [2024-10-24 19:28:31,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:31,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:28:31,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:28:31,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:28:33,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-24 19:28:33,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 803 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:33,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:33,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-24 19:28:33,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:34,317 INFO L124 PetriNetUnfolderBase]: 2114/3614 cut-off events. [2024-10-24 19:28:34,318 INFO L125 PetriNetUnfolderBase]: For 2364/2364 co-relation queries the response was YES. [2024-10-24 19:28:34,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10181 conditions, 3614 events. 2114/3614 cut-off events. For 2364/2364 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 21132 event pairs, 1116 based on Foata normal form. 52/3628 useless extension candidates. Maximal degree in co-relation 10115. Up to 2416 conditions per place. [2024-10-24 19:28:34,340 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 134 selfloop transitions, 20 changer transitions 0/169 dead transitions. [2024-10-24 19:28:34,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 169 transitions, 1374 flow [2024-10-24 19:28:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:28:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:28:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-10-24 19:28:34,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61875 [2024-10-24 19:28:34,342 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 803 flow. Second operand 5 states and 198 transitions. [2024-10-24 19:28:34,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 169 transitions, 1374 flow [2024-10-24 19:28:34,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 169 transitions, 1280 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-24 19:28:34,351 INFO L231 Difference]: Finished difference. Result has 96 places, 116 transitions, 741 flow [2024-10-24 19:28:34,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=741, PETRI_PLACES=96, PETRI_TRANSITIONS=116} [2024-10-24 19:28:34,351 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-10-24 19:28:34,352 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 116 transitions, 741 flow [2024-10-24 19:28:34,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:34,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:34,352 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:34,355 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 (11)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:34,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2024-10-24 19:28:34,552 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:34,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1067826132, now seen corresponding path program 2 times [2024-10-24 19:28:34,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:34,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036489231] [2024-10-24 19:28:34,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:34,554 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 [2024-10-24 19:28:34,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:34,555 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2024-10-24 19:28:34,556 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 (12)] Waiting until timeout for monitored process [2024-10-24 19:28:34,618 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:28:34,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:34,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:28:34,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:34,634 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 [2024-10-24 19:28:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 19:28:34,900 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:34,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:34,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036489231] [2024-10-24 19:28:34,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036489231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:34,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:34,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:28:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565630058] [2024-10-24 19:28:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:34,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:28:34,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:34,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:28:34,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:28:35,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-10-24 19:28:35,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 116 transitions, 741 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:35,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:35,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-10-24 19:28:35,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:35,975 INFO L124 PetriNetUnfolderBase]: 2114/3522 cut-off events. [2024-10-24 19:28:35,976 INFO L125 PetriNetUnfolderBase]: For 3430/3430 co-relation queries the response was YES. [2024-10-24 19:28:35,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10194 conditions, 3522 events. 2114/3522 cut-off events. For 3430/3430 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19463 event pairs, 684 based on Foata normal form. 144/3614 useless extension candidates. Maximal degree in co-relation 10138. Up to 1686 conditions per place. [2024-10-24 19:28:35,996 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 61 selfloop transitions, 53 changer transitions 0/120 dead transitions. [2024-10-24 19:28:35,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 980 flow [2024-10-24 19:28:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:28:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:28:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-10-24 19:28:35,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-24 19:28:35,998 INFO L175 Difference]: Start difference. First operand has 96 places, 116 transitions, 741 flow. Second operand 5 states and 152 transitions. [2024-10-24 19:28:35,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 980 flow [2024-10-24 19:28:36,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 120 transitions, 894 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 19:28:36,008 INFO L231 Difference]: Finished difference. Result has 85 places, 107 transitions, 715 flow [2024-10-24 19:28:36,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=715, PETRI_PLACES=85, PETRI_TRANSITIONS=107} [2024-10-24 19:28:36,009 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 24 predicate places. [2024-10-24 19:28:36,009 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 107 transitions, 715 flow [2024-10-24 19:28:36,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:36,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:36,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:36,013 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 (12)] Ended with exit code 0 [2024-10-24 19:28:36,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2024-10-24 19:28:36,210 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:36,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:36,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1968742034, now seen corresponding path program 1 times [2024-10-24 19:28:36,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:36,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401196492] [2024-10-24 19:28:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:36,211 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 [2024-10-24 19:28:36,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:36,212 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2024-10-24 19:28:36,213 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 (13)] Waiting until timeout for monitored process [2024-10-24 19:28:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:36,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:28:36,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:36,349 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:36,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:36,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401196492] [2024-10-24 19:28:36,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401196492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:36,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:36,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:28:36,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849679040] [2024-10-24 19:28:36,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:36,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:28:36,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:36,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:28:36,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:28:36,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-24 19:28:36,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 107 transitions, 715 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:36,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:36,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-24 19:28:36,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:36,866 INFO L124 PetriNetUnfolderBase]: 2139/3517 cut-off events. [2024-10-24 19:28:36,866 INFO L125 PetriNetUnfolderBase]: For 2475/2475 co-relation queries the response was YES. [2024-10-24 19:28:36,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10149 conditions, 3517 events. 2139/3517 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 19104 event pairs, 544 based on Foata normal form. 3/3467 useless extension candidates. Maximal degree in co-relation 10095. Up to 2642 conditions per place. [2024-10-24 19:28:36,885 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 127 selfloop transitions, 17 changer transitions 1/151 dead transitions. [2024-10-24 19:28:36,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 151 transitions, 1248 flow [2024-10-24 19:28:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:28:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:28:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-10-24 19:28:36,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2024-10-24 19:28:36,887 INFO L175 Difference]: Start difference. First operand has 85 places, 107 transitions, 715 flow. Second operand 3 states and 145 transitions. [2024-10-24 19:28:36,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 151 transitions, 1248 flow [2024-10-24 19:28:36,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 1088 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:28:36,900 INFO L231 Difference]: Finished difference. Result has 84 places, 123 transitions, 788 flow [2024-10-24 19:28:36,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=788, PETRI_PLACES=84, PETRI_TRANSITIONS=123} [2024-10-24 19:28:36,901 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-10-24 19:28:36,901 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 123 transitions, 788 flow [2024-10-24 19:28:36,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:36,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:36,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:36,906 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 (13)] Ended with exit code 0 [2024-10-24 19:28:37,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2024-10-24 19:28:37,105 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:37,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash 391690304, now seen corresponding path program 1 times [2024-10-24 19:28:37,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:37,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008733880] [2024-10-24 19:28:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:37,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:37,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:37,107 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2024-10-24 19:28:37,108 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 (14)] Waiting until timeout for monitored process [2024-10-24 19:28:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:37,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:28:37,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:37,208 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:37,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:37,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008733880] [2024-10-24 19:28:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008733880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:37,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:37,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:28:37,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827142217] [2024-10-24 19:28:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:37,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:28:37,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:37,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:28:37,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:28:37,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-24 19:28:37,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 123 transitions, 788 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:37,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:37,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-24 19:28:37,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:37,746 INFO L124 PetriNetUnfolderBase]: 2342/3824 cut-off events. [2024-10-24 19:28:37,746 INFO L125 PetriNetUnfolderBase]: For 2169/2169 co-relation queries the response was YES. [2024-10-24 19:28:37,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10839 conditions, 3824 events. 2342/3824 cut-off events. For 2169/2169 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 21509 event pairs, 840 based on Foata normal form. 27/3848 useless extension candidates. Maximal degree in co-relation 10785. Up to 2134 conditions per place. [2024-10-24 19:28:37,766 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 232 selfloop transitions, 10 changer transitions 0/245 dead transitions. [2024-10-24 19:28:37,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 245 transitions, 1884 flow [2024-10-24 19:28:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:28:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:28:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-10-24 19:28:37,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.709375 [2024-10-24 19:28:37,768 INFO L175 Difference]: Start difference. First operand has 84 places, 123 transitions, 788 flow. Second operand 5 states and 227 transitions. [2024-10-24 19:28:37,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 245 transitions, 1884 flow [2024-10-24 19:28:37,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 245 transitions, 1840 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:37,777 INFO L231 Difference]: Finished difference. Result has 90 places, 126 transitions, 828 flow [2024-10-24 19:28:37,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=828, PETRI_PLACES=90, PETRI_TRANSITIONS=126} [2024-10-24 19:28:37,778 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-10-24 19:28:37,778 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 126 transitions, 828 flow [2024-10-24 19:28:37,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:37,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:37,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:37,783 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 (14)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:37,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 [2024-10-24 19:28:37,980 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:37,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:37,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1122483587, now seen corresponding path program 1 times [2024-10-24 19:28:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:37,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668601133] [2024-10-24 19:28:37,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:37,982 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 [2024-10-24 19:28:37,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:37,990 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2024-10-24 19:28:37,992 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 (15)] Waiting until timeout for monitored process [2024-10-24 19:28:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:38,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:28:38,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:38,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:38,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:38,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668601133] [2024-10-24 19:28:38,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668601133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:38,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:38,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:28:38,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721957576] [2024-10-24 19:28:38,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:38,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:28:38,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:38,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:28:38,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:28:38,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-24 19:28:38,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 126 transitions, 828 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:38,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:38,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-24 19:28:38,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:38,901 INFO L124 PetriNetUnfolderBase]: 2825/4903 cut-off events. [2024-10-24 19:28:38,901 INFO L125 PetriNetUnfolderBase]: For 5749/5749 co-relation queries the response was YES. [2024-10-24 19:28:38,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14951 conditions, 4903 events. 2825/4903 cut-off events. For 5749/5749 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 29453 event pairs, 787 based on Foata normal form. 84/4969 useless extension candidates. Maximal degree in co-relation 14894. Up to 1846 conditions per place. [2024-10-24 19:28:38,927 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 210 selfloop transitions, 50 changer transitions 0/266 dead transitions. [2024-10-24 19:28:38,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 266 transitions, 2125 flow [2024-10-24 19:28:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 19:28:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 19:28:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2024-10-24 19:28:38,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6852678571428571 [2024-10-24 19:28:38,929 INFO L175 Difference]: Start difference. First operand has 90 places, 126 transitions, 828 flow. Second operand 7 states and 307 transitions. [2024-10-24 19:28:38,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 266 transitions, 2125 flow [2024-10-24 19:28:38,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 266 transitions, 2069 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:28:38,940 INFO L231 Difference]: Finished difference. Result has 99 places, 147 transitions, 1184 flow [2024-10-24 19:28:38,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1184, PETRI_PLACES=99, PETRI_TRANSITIONS=147} [2024-10-24 19:28:38,941 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 38 predicate places. [2024-10-24 19:28:38,941 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 147 transitions, 1184 flow [2024-10-24 19:28:38,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:38,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:38,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:38,946 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 (15)] Ended with exit code 0 [2024-10-24 19:28:39,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2024-10-24 19:28:39,143 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:39,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1328117010, now seen corresponding path program 2 times [2024-10-24 19:28:39,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:39,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813759955] [2024-10-24 19:28:39,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:39,144 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 [2024-10-24 19:28:39,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:39,147 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2024-10-24 19:28:39,148 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 (16)] Waiting until timeout for monitored process [2024-10-24 19:28:39,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:28:39,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:39,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:28:39,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:39,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:39,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:39,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813759955] [2024-10-24 19:28:39,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813759955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:39,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:39,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:28:39,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604890216] [2024-10-24 19:28:39,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:39,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:28:39,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:39,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:28:39,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:28:39,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-24 19:28:39,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 147 transitions, 1184 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:39,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:39,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-24 19:28:39,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:40,183 INFO L124 PetriNetUnfolderBase]: 3857/6277 cut-off events. [2024-10-24 19:28:40,183 INFO L125 PetriNetUnfolderBase]: For 12309/12309 co-relation queries the response was YES. [2024-10-24 19:28:40,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22221 conditions, 6277 events. 3857/6277 cut-off events. For 12309/12309 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 36840 event pairs, 1367 based on Foata normal form. 60/6337 useless extension candidates. Maximal degree in co-relation 22160. Up to 2983 conditions per place. [2024-10-24 19:28:40,222 INFO L140 encePairwiseOnDemand]: 49/64 looper letters, 236 selfloop transitions, 52 changer transitions 3/293 dead transitions. [2024-10-24 19:28:40,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 293 transitions, 2714 flow [2024-10-24 19:28:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:28:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:28:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2024-10-24 19:28:40,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-24 19:28:40,224 INFO L175 Difference]: Start difference. First operand has 99 places, 147 transitions, 1184 flow. Second operand 6 states and 270 transitions. [2024-10-24 19:28:40,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 293 transitions, 2714 flow [2024-10-24 19:28:40,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 293 transitions, 2607 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-24 19:28:40,317 INFO L231 Difference]: Finished difference. Result has 106 places, 182 transitions, 1756 flow [2024-10-24 19:28:40,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1756, PETRI_PLACES=106, PETRI_TRANSITIONS=182} [2024-10-24 19:28:40,318 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 45 predicate places. [2024-10-24 19:28:40,318 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 182 transitions, 1756 flow [2024-10-24 19:28:40,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:40,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:40,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:40,323 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 (16)] Ended with exit code 0 [2024-10-24 19:28:40,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2024-10-24 19:28:40,522 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:40,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1017754465, now seen corresponding path program 2 times [2024-10-24 19:28:40,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:40,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130358201] [2024-10-24 19:28:40,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:40,523 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 [2024-10-24 19:28:40,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:40,524 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2024-10-24 19:28:40,525 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 (17)] Waiting until timeout for monitored process [2024-10-24 19:28:40,591 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:28:40,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:40,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:28:40,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:40,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:40,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:40,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130358201] [2024-10-24 19:28:40,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130358201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:40,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:40,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:28:40,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310993271] [2024-10-24 19:28:40,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:40,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:28:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:28:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:28:40,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-24 19:28:40,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 182 transitions, 1756 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:40,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:40,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-24 19:28:40,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:41,535 INFO L124 PetriNetUnfolderBase]: 3357/5909 cut-off events. [2024-10-24 19:28:41,535 INFO L125 PetriNetUnfolderBase]: For 20651/20681 co-relation queries the response was YES. [2024-10-24 19:28:41,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23684 conditions, 5909 events. 3357/5909 cut-off events. For 20651/20681 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 38150 event pairs, 1305 based on Foata normal form. 120/6019 useless extension candidates. Maximal degree in co-relation 23620. Up to 3309 conditions per place. [2024-10-24 19:28:41,565 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 196 selfloop transitions, 96 changer transitions 2/301 dead transitions. [2024-10-24 19:28:41,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 301 transitions, 3153 flow [2024-10-24 19:28:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:28:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:28:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 278 transitions. [2024-10-24 19:28:41,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2024-10-24 19:28:41,567 INFO L175 Difference]: Start difference. First operand has 106 places, 182 transitions, 1756 flow. Second operand 6 states and 278 transitions. [2024-10-24 19:28:41,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 301 transitions, 3153 flow [2024-10-24 19:28:41,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 301 transitions, 3113 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:41,598 INFO L231 Difference]: Finished difference. Result has 114 places, 206 transitions, 2388 flow [2024-10-24 19:28:41,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2388, PETRI_PLACES=114, PETRI_TRANSITIONS=206} [2024-10-24 19:28:41,599 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 53 predicate places. [2024-10-24 19:28:41,599 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 206 transitions, 2388 flow [2024-10-24 19:28:41,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:41,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:41,599 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:41,604 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 (17)] Ended with exit code 0 [2024-10-24 19:28:41,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2024-10-24 19:28:41,800 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:41,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1141052828, now seen corresponding path program 3 times [2024-10-24 19:28:41,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:41,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46636027] [2024-10-24 19:28:41,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:28:41,801 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 [2024-10-24 19:28:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:41,802 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2024-10-24 19:28:41,803 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 (18)] Waiting until timeout for monitored process [2024-10-24 19:28:41,867 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-24 19:28:41,867 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:41,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:28:41,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:41,913 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:41,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46636027] [2024-10-24 19:28:41,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46636027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:41,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:41,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:28:41,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012431396] [2024-10-24 19:28:41,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:41,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:28:41,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:41,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:28:41,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:28:41,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-24 19:28:41,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 206 transitions, 2388 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:41,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:41,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-24 19:28:41,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:42,598 INFO L124 PetriNetUnfolderBase]: 3355/5708 cut-off events. [2024-10-24 19:28:42,598 INFO L125 PetriNetUnfolderBase]: For 24787/24865 co-relation queries the response was YES. [2024-10-24 19:28:42,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23858 conditions, 5708 events. 3355/5708 cut-off events. For 24787/24865 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35202 event pairs, 1146 based on Foata normal form. 162/5843 useless extension candidates. Maximal degree in co-relation 23790. Up to 2485 conditions per place. [2024-10-24 19:28:42,638 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 232 selfloop transitions, 55 changer transitions 0/294 dead transitions. [2024-10-24 19:28:42,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 294 transitions, 3290 flow [2024-10-24 19:28:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:28:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:28:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2024-10-24 19:28:42,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-24 19:28:42,639 INFO L175 Difference]: Start difference. First operand has 114 places, 206 transitions, 2388 flow. Second operand 6 states and 270 transitions. [2024-10-24 19:28:42,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 294 transitions, 3290 flow [2024-10-24 19:28:42,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 294 transitions, 3266 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-24 19:28:42,677 INFO L231 Difference]: Finished difference. Result has 122 places, 201 transitions, 2399 flow [2024-10-24 19:28:42,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2399, PETRI_PLACES=122, PETRI_TRANSITIONS=201} [2024-10-24 19:28:42,678 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 61 predicate places. [2024-10-24 19:28:42,678 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 201 transitions, 2399 flow [2024-10-24 19:28:42,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:42,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:42,678 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:42,681 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 (18)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:42,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2024-10-24 19:28:42,879 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:42,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1753859258, now seen corresponding path program 4 times [2024-10-24 19:28:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:42,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422801288] [2024-10-24 19:28:42,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:28:42,880 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 [2024-10-24 19:28:42,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:42,884 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2024-10-24 19:28:42,885 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 (19)] Waiting until timeout for monitored process [2024-10-24 19:28:42,958 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:28:42,958 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:42,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:28:42,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:42,995 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:42,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422801288] [2024-10-24 19:28:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422801288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:42,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:42,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:28:42,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117306402] [2024-10-24 19:28:42,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:42,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:28:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:28:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:28:43,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-24 19:28:43,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 201 transitions, 2399 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:43,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:43,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-24 19:28:43,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:43,994 INFO L124 PetriNetUnfolderBase]: 3626/5875 cut-off events. [2024-10-24 19:28:43,994 INFO L125 PetriNetUnfolderBase]: For 31166/31166 co-relation queries the response was YES. [2024-10-24 19:28:44,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26468 conditions, 5875 events. 3626/5875 cut-off events. For 31166/31166 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 33215 event pairs, 1518 based on Foata normal form. 45/5920 useless extension candidates. Maximal degree in co-relation 26396. Up to 3967 conditions per place. [2024-10-24 19:28:44,045 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 182 selfloop transitions, 91 changer transitions 1/276 dead transitions. [2024-10-24 19:28:44,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 276 transitions, 3407 flow [2024-10-24 19:28:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:28:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:28:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2024-10-24 19:28:44,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-10-24 19:28:44,046 INFO L175 Difference]: Start difference. First operand has 122 places, 201 transitions, 2399 flow. Second operand 6 states and 249 transitions. [2024-10-24 19:28:44,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 276 transitions, 3407 flow [2024-10-24 19:28:44,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 276 transitions, 3281 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-24 19:28:44,112 INFO L231 Difference]: Finished difference. Result has 128 places, 211 transitions, 2688 flow [2024-10-24 19:28:44,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2688, PETRI_PLACES=128, PETRI_TRANSITIONS=211} [2024-10-24 19:28:44,113 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 67 predicate places. [2024-10-24 19:28:44,113 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 211 transitions, 2688 flow [2024-10-24 19:28:44,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:44,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:44,114 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:44,118 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 (19)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:44,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2024-10-24 19:28:44,314 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:44,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash -608684058, now seen corresponding path program 1 times [2024-10-24 19:28:44,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:44,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832443786] [2024-10-24 19:28:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:44,315 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 [2024-10-24 19:28:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:44,317 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2024-10-24 19:28:44,319 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 (20)] Waiting until timeout for monitored process [2024-10-24 19:28:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:44,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:28:44,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:44,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:44,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:44,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832443786] [2024-10-24 19:28:44,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832443786] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:44,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:44,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-24 19:28:44,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889539066] [2024-10-24 19:28:44,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:44,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:28:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:44,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:28:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:28:44,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-24 19:28:44,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 211 transitions, 2688 flow. Second operand has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:44,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:44,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-24 19:28:44,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:47,034 INFO L124 PetriNetUnfolderBase]: 7105/11864 cut-off events. [2024-10-24 19:28:47,035 INFO L125 PetriNetUnfolderBase]: For 53475/53517 co-relation queries the response was YES. [2024-10-24 19:28:47,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49842 conditions, 11864 events. 7105/11864 cut-off events. For 53475/53517 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 78801 event pairs, 1003 based on Foata normal form. 53/11899 useless extension candidates. Maximal degree in co-relation 49767. Up to 2353 conditions per place. [2024-10-24 19:28:47,186 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 672 selfloop transitions, 164 changer transitions 0/843 dead transitions. [2024-10-24 19:28:47,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 843 transitions, 8685 flow [2024-10-24 19:28:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:28:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:28:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 947 transitions. [2024-10-24 19:28:47,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725852272727273 [2024-10-24 19:28:47,189 INFO L175 Difference]: Start difference. First operand has 128 places, 211 transitions, 2688 flow. Second operand 22 states and 947 transitions. [2024-10-24 19:28:47,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 843 transitions, 8685 flow [2024-10-24 19:28:47,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 843 transitions, 8389 flow, removed 71 selfloop flow, removed 2 redundant places. [2024-10-24 19:28:47,430 INFO L231 Difference]: Finished difference. Result has 160 places, 335 transitions, 4037 flow [2024-10-24 19:28:47,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4037, PETRI_PLACES=160, PETRI_TRANSITIONS=335} [2024-10-24 19:28:47,431 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 99 predicate places. [2024-10-24 19:28:47,431 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 335 transitions, 4037 flow [2024-10-24 19:28:47,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:47,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:47,432 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:47,436 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 (20)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:47,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2024-10-24 19:28:47,633 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:47,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1519702470, now seen corresponding path program 2 times [2024-10-24 19:28:47,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:47,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533006542] [2024-10-24 19:28:47,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:47,634 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 [2024-10-24 19:28:47,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:47,635 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2024-10-24 19:28:47,636 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 (21)] Waiting until timeout for monitored process [2024-10-24 19:28:47,701 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:28:47,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:47,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:28:47,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:47,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:47,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:47,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533006542] [2024-10-24 19:28:47,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533006542] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:47,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:47,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-24 19:28:47,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864120210] [2024-10-24 19:28:47,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:47,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:28:47,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:28:47,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:28:48,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-24 19:28:48,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 335 transitions, 4037 flow. Second operand has 10 states, 10 states have (on average 30.8) internal successors, (308), 10 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:48,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:48,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-24 19:28:48,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:52,435 INFO L124 PetriNetUnfolderBase]: 10132/17247 cut-off events. [2024-10-24 19:28:52,435 INFO L125 PetriNetUnfolderBase]: For 88243/88275 co-relation queries the response was YES. [2024-10-24 19:28:52,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79751 conditions, 17247 events. 10132/17247 cut-off events. For 88243/88275 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 127626 event pairs, 890 based on Foata normal form. 423/17611 useless extension candidates. Maximal degree in co-relation 79663. Up to 3579 conditions per place. [2024-10-24 19:28:52,683 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 981 selfloop transitions, 350 changer transitions 0/1338 dead transitions. [2024-10-24 19:28:52,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1338 transitions, 14960 flow [2024-10-24 19:28:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 19:28:52,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 19:28:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1143 transitions. [2024-10-24 19:28:52,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.744140625 [2024-10-24 19:28:52,687 INFO L175 Difference]: Start difference. First operand has 160 places, 335 transitions, 4037 flow. Second operand 24 states and 1143 transitions. [2024-10-24 19:28:52,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1338 transitions, 14960 flow [2024-10-24 19:28:53,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1338 transitions, 14539 flow, removed 174 selfloop flow, removed 3 redundant places. [2024-10-24 19:28:53,035 INFO L231 Difference]: Finished difference. Result has 201 places, 574 transitions, 8240 flow [2024-10-24 19:28:53,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=3784, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8240, PETRI_PLACES=201, PETRI_TRANSITIONS=574} [2024-10-24 19:28:53,036 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 140 predicate places. [2024-10-24 19:28:53,036 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 574 transitions, 8240 flow [2024-10-24 19:28:53,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.8) internal successors, (308), 10 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:53,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:53,037 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:53,041 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 (21)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:53,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2024-10-24 19:28:53,237 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:28:53,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:53,238 INFO L85 PathProgramCache]: Analyzing trace with hash -482765724, now seen corresponding path program 3 times [2024-10-24 19:28:53,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:53,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108984835] [2024-10-24 19:28:53,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:28:53,238 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 [2024-10-24 19:28:53,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:53,240 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2024-10-24 19:28:53,241 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 (22)] Waiting until timeout for monitored process [2024-10-24 19:28:53,307 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-24 19:28:53,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:53,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:28:53,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:53,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:53,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:53,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108984835] [2024-10-24 19:28:53,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108984835] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:53,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:53,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-24 19:28:53,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810140635] [2024-10-24 19:28:53,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:53,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:28:53,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:53,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:28:53,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:28:53,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-24 19:28:53,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 574 transitions, 8240 flow. Second operand has 10 states, 10 states have (on average 28.9) internal successors, (289), 10 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:53,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:53,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-24 19:28:53,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:29:01,126 INFO L124 PetriNetUnfolderBase]: 14924/24868 cut-off events. [2024-10-24 19:29:01,126 INFO L125 PetriNetUnfolderBase]: For 281899/281899 co-relation queries the response was YES. [2024-10-24 19:29:01,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145788 conditions, 24868 events. 14924/24868 cut-off events. For 281899/281899 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 186439 event pairs, 4118 based on Foata normal form. 90/24958 useless extension candidates. Maximal degree in co-relation 145679. Up to 10471 conditions per place. [2024-10-24 19:29:01,590 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 788 selfloop transitions, 560 changer transitions 0/1350 dead transitions. [2024-10-24 19:29:01,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1350 transitions, 20681 flow [2024-10-24 19:29:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:29:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:29:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 907 transitions. [2024-10-24 19:29:01,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6441761363636364 [2024-10-24 19:29:01,593 INFO L175 Difference]: Start difference. First operand has 201 places, 574 transitions, 8240 flow. Second operand 22 states and 907 transitions. [2024-10-24 19:29:01,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1350 transitions, 20681 flow [2024-10-24 19:29:03,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1350 transitions, 19633 flow, removed 452 selfloop flow, removed 2 redundant places. [2024-10-24 19:29:03,245 INFO L231 Difference]: Finished difference. Result has 237 places, 927 transitions, 15185 flow [2024-10-24 19:29:03,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=7637, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=15185, PETRI_PLACES=237, PETRI_TRANSITIONS=927} [2024-10-24 19:29:03,246 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 176 predicate places. [2024-10-24 19:29:03,246 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 927 transitions, 15185 flow [2024-10-24 19:29:03,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.9) internal successors, (289), 10 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:29:03,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:29:03,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:29:03,250 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 (22)] Forceful destruction successful, exit code 0 [2024-10-24 19:29:03,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2024-10-24 19:29:03,447 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:29:03,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:29:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash -627290892, now seen corresponding path program 4 times [2024-10-24 19:29:03,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:29:03,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267660187] [2024-10-24 19:29:03,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:29:03,448 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 [2024-10-24 19:29:03,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:29:03,449 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2024-10-24 19:29:03,451 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 (23)] Waiting until timeout for monitored process [2024-10-24 19:29:03,500 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:29:03,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:29:03,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:29:03,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:29:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:29:03,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:29:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:29:03,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:29:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267660187] [2024-10-24 19:29:03,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267660187] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 19:29:03,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 19:29:03,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-10-24 19:29:03,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96453694] [2024-10-24 19:29:03,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:29:03,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:29:03,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:29:03,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:29:03,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:29:03,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-24 19:29:03,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 927 transitions, 15185 flow. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:29:03,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:29:03,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-24 19:29:03,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:29:11,796 INFO L124 PetriNetUnfolderBase]: 17730/29899 cut-off events. [2024-10-24 19:29:11,797 INFO L125 PetriNetUnfolderBase]: For 442227/442907 co-relation queries the response was YES. [2024-10-24 19:29:12,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192319 conditions, 29899 events. 17730/29899 cut-off events. For 442227/442907 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 236851 event pairs, 2108 based on Foata normal form. 544/30224 useless extension candidates. Maximal degree in co-relation 192195. Up to 14705 conditions per place. [2024-10-24 19:29:12,590 INFO L140 encePairwiseOnDemand]: 46/64 looper letters, 876 selfloop transitions, 772 changer transitions 3/1663 dead transitions. [2024-10-24 19:29:12,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1663 transitions, 30261 flow [2024-10-24 19:29:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:29:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:29:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2024-10-24 19:29:12,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.771875 [2024-10-24 19:29:12,592 INFO L175 Difference]: Start difference. First operand has 237 places, 927 transitions, 15185 flow. Second operand 5 states and 247 transitions. [2024-10-24 19:29:12,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1663 transitions, 30261 flow [2024-10-24 19:29:17,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 1663 transitions, 29449 flow, removed 406 selfloop flow, removed 0 redundant places. [2024-10-24 19:29:17,091 INFO L231 Difference]: Finished difference. Result has 245 places, 1421 transitions, 27344 flow [2024-10-24 19:29:17,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=14745, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=27344, PETRI_PLACES=245, PETRI_TRANSITIONS=1421} [2024-10-24 19:29:17,093 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 184 predicate places. [2024-10-24 19:29:17,093 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 1421 transitions, 27344 flow [2024-10-24 19:29:17,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:29:17,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:29:17,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:29:17,096 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 (23)] Forceful destruction successful, exit code 0 [2024-10-24 19:29:17,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2024-10-24 19:29:17,294 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-24 19:29:17,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:29:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 152251518, now seen corresponding path program 5 times [2024-10-24 19:29:17,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:29:17,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495609582] [2024-10-24 19:29:17,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:29:17,295 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 [2024-10-24 19:29:17,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:29:17,296 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2024-10-24 19:29:17,297 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 (24)] Waiting until timeout for monitored process [2024-10-24 19:29:17,370 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:29:17,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:29:17,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:29:17,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:29:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:29:17,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:29:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:29:17,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:29:17,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495609582] [2024-10-24 19:29:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495609582] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:29:17,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:29:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-24 19:29:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023736674] [2024-10-24 19:29:17,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:29:17,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:29:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:29:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:29:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:29:17,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-24 19:29:17,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 1421 transitions, 27344 flow. Second operand has 10 states, 10 states have (on average 30.2) internal successors, (302), 10 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:29:17,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:29:17,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-24 19:29:17,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand