./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/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 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/chl-chromosome-symm.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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:48:11,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:48:11,351 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:48:11,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:48:11,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:48:11,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:48:11,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:48:11,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:48:11,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:48:11,396 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:48:11,397 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:48:11,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:48:11,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:48:11,398 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:48:11,398 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:48:11,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:48:11,399 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:48:11,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:48:11,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:48:11,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:48:11,399 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:48:11,400 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:48:11,400 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:48:11,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:48:11,403 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:48:11,403 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:48:11,403 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:48:11,403 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:48:11,403 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:48:11,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:48:11,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:48:11,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:48:11,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:48:11,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:48:11,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:48:11,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:48:11,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:48:11,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:48:11,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:48:11,405 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:48:11,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:48:11,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:48:11,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2024-10-14 19:48:11,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:48:11,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:48:11,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:48:11,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:48:11,641 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:48:11,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-10-14 19:48:12,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:48:13,102 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:48:13,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-10-14 19:48:13,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f53315d/aef7a1d8142a4208a4e63be4e44df1e9/FLAG67ef98a86 [2024-10-14 19:48:13,502 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f53315d/aef7a1d8142a4208a4e63be4e44df1e9 [2024-10-14 19:48:13,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:48:13,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:48:13,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:48:13,506 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:48:13,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:48:13,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:48:13" (1/1) ... [2024-10-14 19:48:13,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2f8ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:13, skipping insertion in model container [2024-10-14 19:48:13,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:48:13" (1/1) ... [2024-10-14 19:48:13,530 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:48:13,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:48:13,734 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) [2024-10-14 19:48:13,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44a5dd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:13, skipping insertion in model container [2024-10-14 19:48:13,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:48:13,735 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:48:13,736 INFO L158 Benchmark]: Toolchain (without parser) took 230.34ms. Allocated memory is still 146.8MB. Free memory was 93.8MB in the beginning and 83.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:48:13,736 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:48:13,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.85ms. Allocated memory is still 146.8MB. Free memory was 93.8MB in the beginning and 83.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:48:13,738 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.85ms. Allocated memory is still 146.8MB. Free memory was 93.8MB in the beginning and 83.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 102]: 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/chl-chromosome-symm.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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:48:15,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:48:15,407 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:48:15,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:48:15,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:48:15,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:48:15,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:48:15,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:48:15,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:48:15,439 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:48:15,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:48:15,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:48:15,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:48:15,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:48:15,440 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:48:15,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:48:15,441 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:48:15,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:48:15,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:48:15,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:48:15,442 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:48:15,445 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:48:15,445 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:48:15,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:48:15,447 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:48:15,448 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:48:15,448 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:48:15,448 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:48:15,448 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:48:15,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:48:15,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:48:15,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:48:15,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:48:15,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:48:15,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:48:15,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:48:15,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:48:15,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:48:15,449 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:48:15,450 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:48:15,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:48:15,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:48:15,454 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:48:15,454 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:48:15,455 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:48:15,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2024-10-14 19:48:15,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:48:15,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:48:15,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:48:15,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:48:15,717 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:48:15,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-10-14 19:48:16,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:48:17,132 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:48:17,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-10-14 19:48:17,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1647cb109/26048e8b3a7d424a8edfe7655f6f205b/FLAG497369d1e [2024-10-14 19:48:17,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1647cb109/26048e8b3a7d424a8edfe7655f6f205b [2024-10-14 19:48:17,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:48:17,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:48:17,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:48:17,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:48:17,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:48:17,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3858ce0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17, skipping insertion in model container [2024-10-14 19:48:17,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:48:17,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:48:17,378 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:48:17,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:48:17,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:48:17,404 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:48:17,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:48:17,465 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:48:17,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17 WrapperNode [2024-10-14 19:48:17,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:48:17,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:48:17,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:48:17,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:48:17,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,481 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,504 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 189 [2024-10-14 19:48:17,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:48:17,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:48:17,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:48:17,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:48:17,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,527 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,550 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-14 19:48:17,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:48:17,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:48:17,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:48:17,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:48:17,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (1/1) ... [2024-10-14 19:48:17,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:48:17,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:48:17,613 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) [2024-10-14 19:48:17,615 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 [2024-10-14 19:48:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:48:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:48:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:48:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:48:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:48:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:48:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:48:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:48:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:48:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:48:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:48:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:48:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:48:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:48:17,651 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:48:17,744 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:48:17,746 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:48:18,162 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:48:18,162 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:48:18,454 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:48:18,455 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 19:48:18,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:48:18 BoogieIcfgContainer [2024-10-14 19:48:18,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:48:18,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:48:18,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:48:18,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:48:18,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:48:17" (1/3) ... [2024-10-14 19:48:18,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33522084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:48:18, skipping insertion in model container [2024-10-14 19:48:18,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:48:17" (2/3) ... [2024-10-14 19:48:18,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33522084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:48:18, skipping insertion in model container [2024-10-14 19:48:18,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:48:18" (3/3) ... [2024-10-14 19:48:18,463 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2024-10-14 19:48:18,477 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:48:18,477 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-14 19:48:18,477 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:48:18,524 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:48:18,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 42 transitions, 98 flow [2024-10-14 19:48:18,571 INFO L124 PetriNetUnfolderBase]: 4/40 cut-off events. [2024-10-14 19:48:18,571 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:48:18,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 4/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-14 19:48:18,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 42 transitions, 98 flow [2024-10-14 19:48:18,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 39 transitions, 90 flow [2024-10-14 19:48:18,588 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:48:18,594 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;@414b8c0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:48:18,594 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-10-14 19:48:18,597 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:48:18,597 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:48:18,597 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:48:18,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:18,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:48:18,598 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:18,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash 657029, now seen corresponding path program 1 times [2024-10-14 19:48:18,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:18,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748746220] [2024-10-14 19:48:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:18,612 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 [2024-10-14 19:48:18,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:18,615 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) [2024-10-14 19:48:18,616 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 [2024-10-14 19:48:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:18,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:18,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:18,713 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 [2024-10-14 19:48:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:18,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:18,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748746220] [2024-10-14 19:48:18,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748746220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:18,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:48:18,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219325751] [2024-10-14 19:48:18,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:18,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:48:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:48:18,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:48:18,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-10-14 19:48:18,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-14 19:48:18,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:18,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-10-14 19:48:18,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:18,909 INFO L124 PetriNetUnfolderBase]: 39/124 cut-off events. [2024-10-14 19:48:18,909 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-14 19:48:18,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 124 events. 39/124 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 488 event pairs, 22 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 168. Up to 68 conditions per place. [2024-10-14 19:48:18,911 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 18 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-10-14 19:48:18,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 122 flow [2024-10-14 19:48:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:48:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:48:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-10-14 19:48:18,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-10-14 19:48:18,924 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 90 flow. Second operand 3 states and 77 transitions. [2024-10-14 19:48:18,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 122 flow [2024-10-14 19:48:18,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:48:18,930 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 78 flow [2024-10-14 19:48:18,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-10-14 19:48:18,935 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2024-10-14 19:48:18,936 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 78 flow [2024-10-14 19:48:18,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-14 19:48:18,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:18,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:48:18,940 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 [2024-10-14 19:48:19,138 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 [2024-10-14 19:48:19,139 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:19,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash 657030, now seen corresponding path program 1 times [2024-10-14 19:48:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:19,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649831519] [2024-10-14 19:48:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:19,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:19,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:19,144 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) [2024-10-14 19:48:19,146 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 [2024-10-14 19:48:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:19,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:48:19,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:19,225 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 5 [2024-10-14 19:48:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:19,247 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:19,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649831519] [2024-10-14 19:48:19,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649831519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:19,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:19,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:48:19,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765363982] [2024-10-14 19:48:19,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:19,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:48:19,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:48:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:48:19,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-10-14 19:48:19,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-14 19:48:19,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:19,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-10-14 19:48:19,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:19,402 INFO L124 PetriNetUnfolderBase]: 41/130 cut-off events. [2024-10-14 19:48:19,403 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:48:19,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 130 events. 41/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 507 event pairs, 22 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 185. Up to 77 conditions per place. [2024-10-14 19:48:19,404 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 23 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2024-10-14 19:48:19,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 148 flow [2024-10-14 19:48:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:48:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:48:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-14 19:48:19,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 19:48:19,407 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 78 flow. Second operand 3 states and 84 transitions. [2024-10-14 19:48:19,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 148 flow [2024-10-14 19:48:19,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:48:19,409 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 114 flow [2024-10-14 19:48:19,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2024-10-14 19:48:19,410 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2024-10-14 19:48:19,411 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 114 flow [2024-10-14 19:48:19,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-14 19:48:19,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:19,414 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:48:19,418 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 [2024-10-14 19:48:19,614 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 [2024-10-14 19:48:19,615 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:19,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash 631426678, now seen corresponding path program 1 times [2024-10-14 19:48:19,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:19,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939102541] [2024-10-14 19:48:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:19,616 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 [2024-10-14 19:48:19,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:19,619 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) [2024-10-14 19:48:19,619 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 [2024-10-14 19:48:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:19,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:48:19,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:19,680 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 5 [2024-10-14 19:48:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:19,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:19,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939102541] [2024-10-14 19:48:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939102541] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:19,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:19,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2024-10-14 19:48:19,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367039985] [2024-10-14 19:48:19,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:19,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:48:19,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:48:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:48:19,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-10-14 19:48:19,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-10-14 19:48:19,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:19,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-10-14 19:48:19,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:20,595 INFO L124 PetriNetUnfolderBase]: 47/148 cut-off events. [2024-10-14 19:48:20,595 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 19:48:20,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 148 events. 47/148 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 611 event pairs, 22 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 185. Up to 80 conditions per place. [2024-10-14 19:48:20,597 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 29 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2024-10-14 19:48:20,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 276 flow [2024-10-14 19:48:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:48:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:48:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-10-14 19:48:20,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-10-14 19:48:20,600 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 114 flow. Second operand 6 states and 160 transitions. [2024-10-14 19:48:20,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 276 flow [2024-10-14 19:48:20,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 59 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:48:20,603 INFO L231 Difference]: Finished difference. Result has 44 places, 51 transitions, 222 flow [2024-10-14 19:48:20,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=44, PETRI_TRANSITIONS=51} [2024-10-14 19:48:20,604 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-10-14 19:48:20,604 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 51 transitions, 222 flow [2024-10-14 19:48:20,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-10-14 19:48:20,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:20,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:20,611 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 [2024-10-14 19:48:20,804 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 [2024-10-14 19:48:20,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:20,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1231229964, now seen corresponding path program 1 times [2024-10-14 19:48:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901113318] [2024-10-14 19:48:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:20,807 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 [2024-10-14 19:48:20,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:20,808 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) [2024-10-14 19:48:20,809 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 [2024-10-14 19:48:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:20,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:48:20,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:20,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:20,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901113318] [2024-10-14 19:48:20,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901113318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:20,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:20,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:48:20,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884071878] [2024-10-14 19:48:20,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:20,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:48:20,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:20,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:48:20,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:48:20,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-10-14 19:48:20,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 51 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-14 19:48:20,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:20,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-10-14 19:48:20,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:20,966 INFO L124 PetriNetUnfolderBase]: 45/146 cut-off events. [2024-10-14 19:48:20,966 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-14 19:48:20,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 146 events. 45/146 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 576 event pairs, 22 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 239. Up to 89 conditions per place. [2024-10-14 19:48:20,967 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 29 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2024-10-14 19:48:20,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 288 flow [2024-10-14 19:48:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:48:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:48:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-14 19:48:20,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-10-14 19:48:20,970 INFO L175 Difference]: Start difference. First operand has 44 places, 51 transitions, 222 flow. Second operand 3 states and 86 transitions. [2024-10-14 19:48:20,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 288 flow [2024-10-14 19:48:20,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 263 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-14 19:48:20,972 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 201 flow [2024-10-14 19:48:20,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2024-10-14 19:48:20,973 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-10-14 19:48:20,973 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 201 flow [2024-10-14 19:48:20,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-14 19:48:20,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:20,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:20,977 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 (5)] Ended with exit code 0 [2024-10-14 19:48:21,174 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 [2024-10-14 19:48:21,174 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:21,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash 503327911, now seen corresponding path program 1 times [2024-10-14 19:48:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:21,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056034077] [2024-10-14 19:48:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:21,176 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 [2024-10-14 19:48:21,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:21,177 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) [2024-10-14 19:48:21,177 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 [2024-10-14 19:48:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:21,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:48:21,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:48:21,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:48:21,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056034077] [2024-10-14 19:48:21,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056034077] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:21,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:21,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-10-14 19:48:21,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4153985] [2024-10-14 19:48:21,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:21,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:48:21,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:21,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:48:21,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:48:21,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-10-14 19:48:21,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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) [2024-10-14 19:48:21,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:21,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-10-14 19:48:21,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:21,492 INFO L124 PetriNetUnfolderBase]: 39/140 cut-off events. [2024-10-14 19:48:21,492 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-14 19:48:21,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 140 events. 39/140 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 484 event pairs, 22 based on Foata normal form. 6/118 useless extension candidates. Maximal degree in co-relation 218. Up to 72 conditions per place. [2024-10-14 19:48:21,493 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 22 selfloop transitions, 14 changer transitions 0/51 dead transitions. [2024-10-14 19:48:21,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 250 flow [2024-10-14 19:48:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:48:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:48:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-10-14 19:48:21,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-10-14 19:48:21,494 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 201 flow. Second operand 6 states and 160 transitions. [2024-10-14 19:48:21,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 250 flow [2024-10-14 19:48:21,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:48:21,496 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 198 flow [2024-10-14 19:48:21,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-14 19:48:21,497 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-10-14 19:48:21,497 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 198 flow [2024-10-14 19:48:21,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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) [2024-10-14 19:48:21,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:21,497 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:48:21,501 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 [2024-10-14 19:48:21,699 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 [2024-10-14 19:48:21,700 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:21,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash 112967238, now seen corresponding path program 2 times [2024-10-14 19:48:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:21,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509490411] [2024-10-14 19:48:21,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:48:21,701 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 [2024-10-14 19:48:21,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:21,703 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) [2024-10-14 19:48:21,704 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 [2024-10-14 19:48:21,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:48:21,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:48:21,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:48:21,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:21,766 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 5 [2024-10-14 19:48:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:21,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:22,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:22,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509490411] [2024-10-14 19:48:22,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509490411] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:22,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:22,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:48:22,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825979496] [2024-10-14 19:48:22,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:22,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:48:22,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:22,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:48:22,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:48:23,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-10-14 19:48:23,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 198 flow. Second operand has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 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) [2024-10-14 19:48:23,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:23,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-10-14 19:48:23,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:27,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:48:31,946 INFO L124 PetriNetUnfolderBase]: 49/174 cut-off events. [2024-10-14 19:48:31,947 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-10-14 19:48:31,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 174 events. 49/174 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 585 event pairs, 22 based on Foata normal form. 14/160 useless extension candidates. Maximal degree in co-relation 288. Up to 81 conditions per place. [2024-10-14 19:48:31,948 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 30 selfloop transitions, 42 changer transitions 0/85 dead transitions. [2024-10-14 19:48:31,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 604 flow [2024-10-14 19:48:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:48:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:48:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 392 transitions. [2024-10-14 19:48:31,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2024-10-14 19:48:31,952 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 198 flow. Second operand 17 states and 392 transitions. [2024-10-14 19:48:31,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 604 flow [2024-10-14 19:48:31,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 587 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:31,956 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 565 flow [2024-10-14 19:48:31,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=565, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2024-10-14 19:48:31,957 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-10-14 19:48:31,959 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 565 flow [2024-10-14 19:48:31,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 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) [2024-10-14 19:48:31,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:31,959 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-14 19:48:31,964 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 [2024-10-14 19:48:32,160 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 [2024-10-14 19:48:32,160 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:32,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:32,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1126872602, now seen corresponding path program 3 times [2024-10-14 19:48:32,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:32,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356501301] [2024-10-14 19:48:32,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:48:32,161 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 [2024-10-14 19:48:32,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:32,162 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) [2024-10-14 19:48:32,163 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 [2024-10-14 19:48:32,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-14 19:48:32,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:48:32,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 19:48:32,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:32,372 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 5 [2024-10-14 19:48:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:32,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:34,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:34,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356501301] [2024-10-14 19:48:34,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356501301] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:34,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:34,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-14 19:48:34,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553898389] [2024-10-14 19:48:34,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:34,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:48:34,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:34,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:48:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:48:37,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-10-14 19:48:37,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 565 flow. Second operand has 25 states, 25 states have (on average 19.84) internal successors, (496), 25 states have internal predecessors, (496), 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) [2024-10-14 19:48:37,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:37,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-10-14 19:48:37,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:38,076 INFO L124 PetriNetUnfolderBase]: 37/138 cut-off events. [2024-10-14 19:48:38,077 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-14 19:48:38,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 138 events. 37/138 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 473 event pairs, 22 based on Foata normal form. 2/112 useless extension candidates. Maximal degree in co-relation 292. Up to 68 conditions per place. [2024-10-14 19:48:38,078 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 23 selfloop transitions, 13 changer transitions 0/49 dead transitions. [2024-10-14 19:48:38,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 49 transitions, 296 flow [2024-10-14 19:48:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:48:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:48:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-10-14 19:48:38,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-14 19:48:38,080 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 565 flow. Second operand 8 states and 182 transitions. [2024-10-14 19:48:38,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 49 transitions, 296 flow [2024-10-14 19:48:38,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 242 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-10-14 19:48:38,082 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 172 flow [2024-10-14 19:48:38,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=172, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-10-14 19:48:38,083 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-10-14 19:48:38,083 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 172 flow [2024-10-14 19:48:38,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 19.84) internal successors, (496), 25 states have internal predecessors, (496), 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) [2024-10-14 19:48:38,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:38,084 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:38,089 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 (8)] Forceful destruction successful, exit code 0 [2024-10-14 19:48:38,284 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 [2024-10-14 19:48:38,284 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:38,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1789490067, now seen corresponding path program 2 times [2024-10-14 19:48:38,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:38,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694741612] [2024-10-14 19:48:38,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:48:38,285 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 [2024-10-14 19:48:38,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:38,288 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) [2024-10-14 19:48:38,289 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 [2024-10-14 19:48:38,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:48:38,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:48:38,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:48:38,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:38,355 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 [2024-10-14 19:48:38,393 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-14 19:48:38,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-14 19:48:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:38,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:38,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:38,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694741612] [2024-10-14 19:48:38,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694741612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:38,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:38,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:48:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20228041] [2024-10-14 19:48:38,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:38,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:38,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:38,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:38,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:38,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-10-14 19:48:38,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-14 19:48:38,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:38,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-10-14 19:48:38,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:38,672 INFO L124 PetriNetUnfolderBase]: 48/157 cut-off events. [2024-10-14 19:48:38,673 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-14 19:48:38,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 157 events. 48/157 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 568 event pairs, 31 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 317. Up to 86 conditions per place. [2024-10-14 19:48:38,674 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 28 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-10-14 19:48:38,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 41 transitions, 230 flow [2024-10-14 19:48:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-10-14 19:48:38,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-14 19:48:38,676 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 172 flow. Second operand 5 states and 98 transitions. [2024-10-14 19:48:38,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 41 transitions, 230 flow [2024-10-14 19:48:38,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 204 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-14 19:48:38,678 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 148 flow [2024-10-14 19:48:38,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-10-14 19:48:38,680 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-10-14 19:48:38,680 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 148 flow [2024-10-14 19:48:38,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-14 19:48:38,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:38,681 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:38,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 19:48:38,881 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 [2024-10-14 19:48:38,882 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:38,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:38,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1789490068, now seen corresponding path program 1 times [2024-10-14 19:48:38,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:38,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367729614] [2024-10-14 19:48:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:38,883 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 [2024-10-14 19:48:38,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:38,884 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) [2024-10-14 19:48:38,885 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 (10)] Waiting until timeout for monitored process [2024-10-14 19:48:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:39,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:48:39,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:39,058 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 [2024-10-14 19:48:39,062 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 5 [2024-10-14 19:48:39,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:39,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-14 19:48:39,158 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:39,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:48:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:39,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:39,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367729614] [2024-10-14 19:48:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367729614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:39,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:39,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:48:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685114091] [2024-10-14 19:48:39,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:39,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:39,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:39,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:39,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:39,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 42 [2024-10-14 19:48:39,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-10-14 19:48:39,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:39,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 42 [2024-10-14 19:48:39,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:39,451 INFO L124 PetriNetUnfolderBase]: 73/226 cut-off events. [2024-10-14 19:48:39,452 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:48:39,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 226 events. 73/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 964 event pairs, 31 based on Foata normal form. 8/204 useless extension candidates. Maximal degree in co-relation 424. Up to 86 conditions per place. [2024-10-14 19:48:39,453 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 37 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2024-10-14 19:48:39,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 257 flow [2024-10-14 19:48:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:48:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:48:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-10-14 19:48:39,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-14 19:48:39,454 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 148 flow. Second operand 6 states and 135 transitions. [2024-10-14 19:48:39,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 257 flow [2024-10-14 19:48:39,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:39,456 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 161 flow [2024-10-14 19:48:39,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-10-14 19:48:39,456 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-10-14 19:48:39,457 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 161 flow [2024-10-14 19:48:39,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-10-14 19:48:39,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:39,457 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:39,464 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 [2024-10-14 19:48:39,658 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 [2024-10-14 19:48:39,659 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:39,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash -360382155, now seen corresponding path program 1 times [2024-10-14 19:48:39,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:39,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72802065] [2024-10-14 19:48:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:39,660 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 [2024-10-14 19:48:39,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:39,662 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) [2024-10-14 19:48:39,663 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 [2024-10-14 19:48:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:39,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:48:39,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:39,790 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 [2024-10-14 19:48:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:39,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:39,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:39,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72802065] [2024-10-14 19:48:39,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72802065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:39,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:39,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:48:39,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533834445] [2024-10-14 19:48:39,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:39,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:39,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:39,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:39,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:39,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-10-14 19:48:39,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-14 19:48:39,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:39,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-10-14 19:48:39,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:39,924 INFO L124 PetriNetUnfolderBase]: 79/203 cut-off events. [2024-10-14 19:48:39,924 INFO L125 PetriNetUnfolderBase]: For 56/63 co-relation queries the response was YES. [2024-10-14 19:48:39,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 203 events. 79/203 cut-off events. For 56/63 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 710 event pairs, 57 based on Foata normal form. 16/215 useless extension candidates. Maximal degree in co-relation 452. Up to 142 conditions per place. [2024-10-14 19:48:39,925 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 30 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-10-14 19:48:39,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 221 flow [2024-10-14 19:48:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:48:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:48:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-10-14 19:48:39,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-10-14 19:48:39,926 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 161 flow. Second operand 4 states and 83 transitions. [2024-10-14 19:48:39,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 221 flow [2024-10-14 19:48:39,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 213 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:48:39,927 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 153 flow [2024-10-14 19:48:39,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-10-14 19:48:39,928 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-10-14 19:48:39,928 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 153 flow [2024-10-14 19:48:39,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-10-14 19:48:39,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:39,928 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:39,934 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 [2024-10-14 19:48:40,129 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 [2024-10-14 19:48:40,129 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:40,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash -360382154, now seen corresponding path program 1 times [2024-10-14 19:48:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:40,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390163736] [2024-10-14 19:48:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:40,130 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 [2024-10-14 19:48:40,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:40,131 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) [2024-10-14 19:48:40,132 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 [2024-10-14 19:48:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:40,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:48:40,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:40,279 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 5 [2024-10-14 19:48:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:40,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:40,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:40,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390163736] [2024-10-14 19:48:40,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390163736] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:40,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:40,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:40,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086494476] [2024-10-14 19:48:40,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:40,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:40,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:40,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:40,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 42 [2024-10-14 19:48:40,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2024-10-14 19:48:40,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:40,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 42 [2024-10-14 19:48:40,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:40,551 INFO L124 PetriNetUnfolderBase]: 73/202 cut-off events. [2024-10-14 19:48:40,551 INFO L125 PetriNetUnfolderBase]: For 25/28 co-relation queries the response was YES. [2024-10-14 19:48:40,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 202 events. 73/202 cut-off events. For 25/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 728 event pairs, 31 based on Foata normal form. 8/194 useless extension candidates. Maximal degree in co-relation 426. Up to 86 conditions per place. [2024-10-14 19:48:40,552 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 38 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-10-14 19:48:40,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 260 flow [2024-10-14 19:48:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-14 19:48:40,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-10-14 19:48:40,554 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 153 flow. Second operand 5 states and 128 transitions. [2024-10-14 19:48:40,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 260 flow [2024-10-14 19:48:40,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 257 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:48:40,555 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 162 flow [2024-10-14 19:48:40,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-10-14 19:48:40,556 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-10-14 19:48:40,556 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 162 flow [2024-10-14 19:48:40,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2024-10-14 19:48:40,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:40,556 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:40,566 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 [2024-10-14 19:48:40,757 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 [2024-10-14 19:48:40,757 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:40,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1686875339, now seen corresponding path program 1 times [2024-10-14 19:48:40,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:40,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267637596] [2024-10-14 19:48:40,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:40,758 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 [2024-10-14 19:48:40,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:40,763 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) [2024-10-14 19:48:40,764 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 [2024-10-14 19:48:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:40,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:48:40,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:40,902 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 5 [2024-10-14 19:48:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:41,002 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:41,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:41,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267637596] [2024-10-14 19:48:41,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267637596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:41,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:41,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631007158] [2024-10-14 19:48:41,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:41,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:41,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:41,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:41,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 42 [2024-10-14 19:48:41,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-10-14 19:48:41,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:41,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 42 [2024-10-14 19:48:41,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:41,258 INFO L124 PetriNetUnfolderBase]: 113/302 cut-off events. [2024-10-14 19:48:41,259 INFO L125 PetriNetUnfolderBase]: For 149/160 co-relation queries the response was YES. [2024-10-14 19:48:41,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 302 events. 113/302 cut-off events. For 149/160 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1301 event pairs, 57 based on Foata normal form. 12/308 useless extension candidates. Maximal degree in co-relation 658. Up to 142 conditions per place. [2024-10-14 19:48:41,260 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 38 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-10-14 19:48:41,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 280 flow [2024-10-14 19:48:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:41,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-14 19:48:41,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-14 19:48:41,262 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 162 flow. Second operand 5 states and 126 transitions. [2024-10-14 19:48:41,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 280 flow [2024-10-14 19:48:41,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:48:41,264 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 170 flow [2024-10-14 19:48:41,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-10-14 19:48:41,265 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-10-14 19:48:41,265 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 170 flow [2024-10-14 19:48:41,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-10-14 19:48:41,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:41,267 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:41,274 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 [2024-10-14 19:48:41,467 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 [2024-10-14 19:48:41,467 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:41,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1565122491, now seen corresponding path program 1 times [2024-10-14 19:48:41,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:41,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331127276] [2024-10-14 19:48:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:41,468 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 [2024-10-14 19:48:41,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:41,470 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) [2024-10-14 19:48:41,471 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 [2024-10-14 19:48:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:41,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:48:41,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:41,720 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 [2024-10-14 19:48:41,724 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 5 [2024-10-14 19:48:41,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:41,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-14 19:48:41,831 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:41,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:48:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:41,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:42,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:42,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331127276] [2024-10-14 19:48:42,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331127276] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:42,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:42,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:48:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110925921] [2024-10-14 19:48:42,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:42,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:48:42,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:48:42,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:48:46,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:50,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:51,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-14 19:48:51,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 170 flow. Second operand has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 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) [2024-10-14 19:48:51,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:51,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-14 19:48:51,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:51,656 INFO L124 PetriNetUnfolderBase]: 473/960 cut-off events. [2024-10-14 19:48:51,656 INFO L125 PetriNetUnfolderBase]: For 321/352 co-relation queries the response was YES. [2024-10-14 19:48:51,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 960 events. 473/960 cut-off events. For 321/352 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5197 event pairs, 75 based on Foata normal form. 48/990 useless extension candidates. Maximal degree in co-relation 2211. Up to 190 conditions per place. [2024-10-14 19:48:51,662 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 83 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2024-10-14 19:48:51,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 518 flow [2024-10-14 19:48:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:48:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:48:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-10-14 19:48:51,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2024-10-14 19:48:51,666 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 170 flow. Second operand 9 states and 206 transitions. [2024-10-14 19:48:51,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 518 flow [2024-10-14 19:48:51,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 97 transitions, 504 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:51,669 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 211 flow [2024-10-14 19:48:51,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=211, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2024-10-14 19:48:51,670 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-10-14 19:48:51,670 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 211 flow [2024-10-14 19:48:51,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 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) [2024-10-14 19:48:51,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:51,671 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:51,680 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 (14)] Ended with exit code 0 [2024-10-14 19:48:51,871 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 [2024-10-14 19:48:51,871 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:51,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 753528552, now seen corresponding path program 1 times [2024-10-14 19:48:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433582203] [2024-10-14 19:48:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:51,872 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 [2024-10-14 19:48:51,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:51,873 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) [2024-10-14 19:48:51,874 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 [2024-10-14 19:48:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:52,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:48:52,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:52,102 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 5 [2024-10-14 19:48:52,107 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 [2024-10-14 19:48:52,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:52,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-14 19:48:52,194 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:52,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:48:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:52,265 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:52,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433582203] [2024-10-14 19:48:52,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433582203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:52,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:52,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:48:52,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274641348] [2024-10-14 19:48:52,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:52,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:52,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:52,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:52,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:52,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 42 [2024-10-14 19:48:52,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-10-14 19:48:52,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:52,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 42 [2024-10-14 19:48:52,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:52,500 INFO L124 PetriNetUnfolderBase]: 238/608 cut-off events. [2024-10-14 19:48:52,501 INFO L125 PetriNetUnfolderBase]: For 557/568 co-relation queries the response was YES. [2024-10-14 19:48:52,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 608 events. 238/608 cut-off events. For 557/568 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3169 event pairs, 138 based on Foata normal form. 27/617 useless extension candidates. Maximal degree in co-relation 1449. Up to 306 conditions per place. [2024-10-14 19:48:52,503 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 41 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-10-14 19:48:52,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 357 flow [2024-10-14 19:48:52,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:48:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:48:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-10-14 19:48:52,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-10-14 19:48:52,505 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 211 flow. Second operand 6 states and 133 transitions. [2024-10-14 19:48:52,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 357 flow [2024-10-14 19:48:52,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 336 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-14 19:48:52,509 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 212 flow [2024-10-14 19:48:52,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2024-10-14 19:48:52,510 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-10-14 19:48:52,510 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 212 flow [2024-10-14 19:48:52,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-10-14 19:48:52,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:52,510 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:52,518 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 [2024-10-14 19:48:52,714 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 [2024-10-14 19:48:52,714 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:52,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:52,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1274157551, now seen corresponding path program 1 times [2024-10-14 19:48:52,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:52,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647478965] [2024-10-14 19:48:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:52,715 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 [2024-10-14 19:48:52,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:52,716 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) [2024-10-14 19:48:52,717 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 [2024-10-14 19:48:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:52,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:48:52,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:52,886 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 5 [2024-10-14 19:48:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:52,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:53,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:53,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647478965] [2024-10-14 19:48:53,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647478965] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:53,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-14 19:48:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491307019] [2024-10-14 19:48:53,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:53,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:48:53,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:53,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:48:53,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:48:53,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 42 [2024-10-14 19:48:53,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:53,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:53,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 42 [2024-10-14 19:48:53,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:54,067 INFO L124 PetriNetUnfolderBase]: 230/587 cut-off events. [2024-10-14 19:48:54,067 INFO L125 PetriNetUnfolderBase]: For 555/572 co-relation queries the response was YES. [2024-10-14 19:48:54,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1507 conditions, 587 events. 230/587 cut-off events. For 555/572 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2857 event pairs, 53 based on Foata normal form. 36/611 useless extension candidates. Maximal degree in co-relation 1490. Up to 132 conditions per place. [2024-10-14 19:48:54,070 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 73 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-10-14 19:48:54,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 526 flow [2024-10-14 19:48:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:48:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:48:54,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-10-14 19:48:54,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-10-14 19:48:54,071 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 212 flow. Second operand 8 states and 220 transitions. [2024-10-14 19:48:54,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 526 flow [2024-10-14 19:48:54,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 500 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 19:48:54,075 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 236 flow [2024-10-14 19:48:54,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=236, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2024-10-14 19:48:54,076 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-10-14 19:48:54,076 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 236 flow [2024-10-14 19:48:54,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:54,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:54,077 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:54,084 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 [2024-10-14 19:48:54,278 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 [2024-10-14 19:48:54,278 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:54,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:54,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1708512755, now seen corresponding path program 1 times [2024-10-14 19:48:54,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:54,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334876895] [2024-10-14 19:48:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:54,280 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 [2024-10-14 19:48:54,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:54,282 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) [2024-10-14 19:48:54,283 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 [2024-10-14 19:48:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:54,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:48:54,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:54,462 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 5 [2024-10-14 19:48:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:54,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:54,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:54,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334876895] [2024-10-14 19:48:54,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334876895] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:54,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:54,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-14 19:48:54,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516195395] [2024-10-14 19:48:54,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:54,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:48:54,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:48:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:48:55,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-10-14 19:48:55,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 236 flow. Second operand has 10 states, 10 states have (on average 20.5) internal successors, (205), 10 states have internal predecessors, (205), 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) [2024-10-14 19:48:55,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:55,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-10-14 19:48:55,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:55,913 INFO L124 PetriNetUnfolderBase]: 631/1418 cut-off events. [2024-10-14 19:48:55,913 INFO L125 PetriNetUnfolderBase]: For 2117/2173 co-relation queries the response was YES. [2024-10-14 19:48:55,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3693 conditions, 1418 events. 631/1418 cut-off events. For 2117/2173 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8283 event pairs, 138 based on Foata normal form. 81/1489 useless extension candidates. Maximal degree in co-relation 3673. Up to 289 conditions per place. [2024-10-14 19:48:55,921 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 83 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2024-10-14 19:48:55,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 714 flow [2024-10-14 19:48:55,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:48:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:48:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-10-14 19:48:55,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-10-14 19:48:55,923 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 236 flow. Second operand 8 states and 208 transitions. [2024-10-14 19:48:55,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 714 flow [2024-10-14 19:48:55,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 99 transitions, 670 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:48:55,927 INFO L231 Difference]: Finished difference. Result has 73 places, 48 transitions, 269 flow [2024-10-14 19:48:55,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=269, PETRI_PLACES=73, PETRI_TRANSITIONS=48} [2024-10-14 19:48:55,928 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-10-14 19:48:55,928 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 48 transitions, 269 flow [2024-10-14 19:48:55,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.5) internal successors, (205), 10 states have internal predecessors, (205), 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) [2024-10-14 19:48:55,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:55,929 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:55,938 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 [2024-10-14 19:48:56,130 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 [2024-10-14 19:48:56,130 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:48:56,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1424287258, now seen corresponding path program 1 times [2024-10-14 19:48:56,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:56,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779379730] [2024-10-14 19:48:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:56,131 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 [2024-10-14 19:48:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:56,132 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) [2024-10-14 19:48:56,134 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 [2024-10-14 19:48:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:56,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:48:56,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:56,412 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 [2024-10-14 19:48:56,416 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 5 [2024-10-14 19:48:56,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:56,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-14 19:48:56,487 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:56,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:48:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:56,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:56,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:56,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779379730] [2024-10-14 19:48:56,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779379730] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:56,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:56,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:48:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502169190] [2024-10-14 19:48:56,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:56,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:48:56,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:48:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:49:01,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:49:01,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-14 19:49:01,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 48 transitions, 269 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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) [2024-10-14 19:49:01,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:01,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-14 19:49:01,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:02,138 INFO L124 PetriNetUnfolderBase]: 479/1217 cut-off events. [2024-10-14 19:49:02,138 INFO L125 PetriNetUnfolderBase]: For 2055/2099 co-relation queries the response was YES. [2024-10-14 19:49:02,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 1217 events. 479/1217 cut-off events. For 2055/2099 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7334 event pairs, 138 based on Foata normal form. 81/1278 useless extension candidates. Maximal degree in co-relation 3401. Up to 316 conditions per place. [2024-10-14 19:49:02,145 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 79 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2024-10-14 19:49:02,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 97 transitions, 699 flow [2024-10-14 19:49:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:49:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:49:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-10-14 19:49:02,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-10-14 19:49:02,147 INFO L175 Difference]: Start difference. First operand has 73 places, 48 transitions, 269 flow. Second operand 9 states and 204 transitions. [2024-10-14 19:49:02,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 97 transitions, 699 flow [2024-10-14 19:49:02,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 686 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-14 19:49:02,151 INFO L231 Difference]: Finished difference. Result has 81 places, 49 transitions, 294 flow [2024-10-14 19:49:02,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=294, PETRI_PLACES=81, PETRI_TRANSITIONS=49} [2024-10-14 19:49:02,152 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-10-14 19:49:02,152 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 49 transitions, 294 flow [2024-10-14 19:49:02,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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) [2024-10-14 19:49:02,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:02,153 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:02,166 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 (18)] Ended with exit code 0 [2024-10-14 19:49:02,353 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 [2024-10-14 19:49:02,354 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:49:02,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1231459549, now seen corresponding path program 1 times [2024-10-14 19:49:02,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:02,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500777111] [2024-10-14 19:49:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:02,355 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 [2024-10-14 19:49:02,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:02,356 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) [2024-10-14 19:49:02,357 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 [2024-10-14 19:49:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:02,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:49:02,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:49:02,530 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:02,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:02,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500777111] [2024-10-14 19:49:02,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500777111] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:02,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:02,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:49:02,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802341839] [2024-10-14 19:49:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:02,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:49:02,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:02,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:49:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:49:02,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-10-14 19:49:02,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 49 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-14 19:49:02,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:02,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-10-14 19:49:02,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:02,782 INFO L124 PetriNetUnfolderBase]: 438/1113 cut-off events. [2024-10-14 19:49:02,783 INFO L125 PetriNetUnfolderBase]: For 2383/2416 co-relation queries the response was YES. [2024-10-14 19:49:02,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 1113 events. 438/1113 cut-off events. For 2383/2416 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6591 event pairs, 280 based on Foata normal form. 3/1082 useless extension candidates. Maximal degree in co-relation 3334. Up to 684 conditions per place. [2024-10-14 19:49:02,789 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 56 selfloop transitions, 3 changer transitions 2/72 dead transitions. [2024-10-14 19:49:02,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 547 flow [2024-10-14 19:49:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:49:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:49:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-14 19:49:02,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2024-10-14 19:49:02,790 INFO L175 Difference]: Start difference. First operand has 81 places, 49 transitions, 294 flow. Second operand 4 states and 117 transitions. [2024-10-14 19:49:02,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 547 flow [2024-10-14 19:49:02,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 519 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-14 19:49:02,794 INFO L231 Difference]: Finished difference. Result has 79 places, 50 transitions, 296 flow [2024-10-14 19:49:02,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=79, PETRI_TRANSITIONS=50} [2024-10-14 19:49:02,794 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-10-14 19:49:02,794 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 50 transitions, 296 flow [2024-10-14 19:49:02,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-14 19:49:02,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:02,795 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:02,800 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 (19)] Ended with exit code 0 [2024-10-14 19:49:02,995 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 [2024-10-14 19:49:02,995 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:49:02,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash -212930291, now seen corresponding path program 2 times [2024-10-14 19:49:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041771267] [2024-10-14 19:49:02,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:02,996 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 [2024-10-14 19:49:02,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:02,999 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) [2024-10-14 19:49:03,002 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 [2024-10-14 19:49:03,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:49:03,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:03,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:49:03,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:49:03,103 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:03,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:03,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041771267] [2024-10-14 19:49:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041771267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:03,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:49:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167974214] [2024-10-14 19:49:03,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:03,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:49:03,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:49:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:49:03,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-10-14 19:49:03,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 50 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-14 19:49:03,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:03,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-10-14 19:49:03,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:03,345 INFO L124 PetriNetUnfolderBase]: 436/1045 cut-off events. [2024-10-14 19:49:03,346 INFO L125 PetriNetUnfolderBase]: For 2421/2461 co-relation queries the response was YES. [2024-10-14 19:49:03,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3306 conditions, 1045 events. 436/1045 cut-off events. For 2421/2461 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6062 event pairs, 315 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 3277. Up to 694 conditions per place. [2024-10-14 19:49:03,351 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 58 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-10-14 19:49:03,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 553 flow [2024-10-14 19:49:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:49:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:49:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-10-14 19:49:03,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-10-14 19:49:03,353 INFO L175 Difference]: Start difference. First operand has 79 places, 50 transitions, 296 flow. Second operand 4 states and 114 transitions. [2024-10-14 19:49:03,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 553 flow [2024-10-14 19:49:03,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:49:03,356 INFO L231 Difference]: Finished difference. Result has 82 places, 51 transitions, 308 flow [2024-10-14 19:49:03,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=82, PETRI_TRANSITIONS=51} [2024-10-14 19:49:03,357 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-10-14 19:49:03,357 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 51 transitions, 308 flow [2024-10-14 19:49:03,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-14 19:49:03,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:03,357 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:03,362 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 (20)] Ended with exit code 0 [2024-10-14 19:49:03,558 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 [2024-10-14 19:49:03,558 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:49:03,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash 631760863, now seen corresponding path program 3 times [2024-10-14 19:49:03,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159296985] [2024-10-14 19:49:03,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:49:03,559 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 [2024-10-14 19:49:03,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:03,560 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) [2024-10-14 19:49:03,561 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 [2024-10-14 19:49:03,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 19:49:03,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:03,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:49:03,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:49:03,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:03,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159296985] [2024-10-14 19:49:03,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159296985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:03,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:03,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:49:03,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368646741] [2024-10-14 19:49:03,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:03,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:49:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:49:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:49:03,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 42 [2024-10-14 19:49:03,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 51 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-14 19:49:03,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:03,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 42 [2024-10-14 19:49:03,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:03,953 INFO L124 PetriNetUnfolderBase]: 641/1390 cut-off events. [2024-10-14 19:49:03,953 INFO L125 PetriNetUnfolderBase]: For 3598/3648 co-relation queries the response was YES. [2024-10-14 19:49:03,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4663 conditions, 1390 events. 641/1390 cut-off events. For 3598/3648 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8068 event pairs, 405 based on Foata normal form. 20/1376 useless extension candidates. Maximal degree in co-relation 4632. Up to 920 conditions per place. [2024-10-14 19:49:03,962 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 64 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-10-14 19:49:03,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 78 transitions, 602 flow [2024-10-14 19:49:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:49:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:49:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-14 19:49:03,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2024-10-14 19:49:03,964 INFO L175 Difference]: Start difference. First operand has 82 places, 51 transitions, 308 flow. Second operand 4 states and 117 transitions. [2024-10-14 19:49:03,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 78 transitions, 602 flow [2024-10-14 19:49:03,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:49:03,969 INFO L231 Difference]: Finished difference. Result has 85 places, 53 transitions, 336 flow [2024-10-14 19:49:03,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=85, PETRI_TRANSITIONS=53} [2024-10-14 19:49:03,970 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2024-10-14 19:49:03,970 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 53 transitions, 336 flow [2024-10-14 19:49:03,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-14 19:49:03,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:03,970 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:03,974 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 (21)] Ended with exit code 0 [2024-10-14 19:49:04,171 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 [2024-10-14 19:49:04,171 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:49:04,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:04,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1319966199, now seen corresponding path program 4 times [2024-10-14 19:49:04,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:04,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712225770] [2024-10-14 19:49:04,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:49:04,172 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 [2024-10-14 19:49:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:04,173 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) [2024-10-14 19:49:04,177 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 [2024-10-14 19:49:04,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:49:04,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:04,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:49:04,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:49:04,293 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:04,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:04,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712225770] [2024-10-14 19:49:04,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712225770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:04,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:04,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:49:04,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973040425] [2024-10-14 19:49:04,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:04,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:49:04,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:04,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:49:04,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:49:04,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-10-14 19:49:04,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 53 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-14 19:49:04,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:04,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-10-14 19:49:04,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:04,560 INFO L124 PetriNetUnfolderBase]: 448/1240 cut-off events. [2024-10-14 19:49:04,560 INFO L125 PetriNetUnfolderBase]: For 3617/3652 co-relation queries the response was YES. [2024-10-14 19:49:04,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 1240 events. 448/1240 cut-off events. For 3617/3652 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7803 event pairs, 38 based on Foata normal form. 20/1236 useless extension candidates. Maximal degree in co-relation 4154. Up to 706 conditions per place. [2024-10-14 19:49:04,569 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 52 selfloop transitions, 6 changer transitions 1/71 dead transitions. [2024-10-14 19:49:04,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 71 transitions, 587 flow [2024-10-14 19:49:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:49:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:49:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-14 19:49:04,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-10-14 19:49:04,571 INFO L175 Difference]: Start difference. First operand has 85 places, 53 transitions, 336 flow. Second operand 4 states and 110 transitions. [2024-10-14 19:49:04,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 71 transitions, 587 flow [2024-10-14 19:49:04,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 71 transitions, 580 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 19:49:04,577 INFO L231 Difference]: Finished difference. Result has 89 places, 54 transitions, 371 flow [2024-10-14 19:49:04,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=371, PETRI_PLACES=89, PETRI_TRANSITIONS=54} [2024-10-14 19:49:04,577 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-10-14 19:49:04,577 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 54 transitions, 371 flow [2024-10-14 19:49:04,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-14 19:49:04,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:04,578 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:04,583 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 (22)] Ended with exit code 0 [2024-10-14 19:49:04,782 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 [2024-10-14 19:49:04,783 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:49:04,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1604486164, now seen corresponding path program 1 times [2024-10-14 19:49:04,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:04,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407752160] [2024-10-14 19:49:04,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:04,783 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 [2024-10-14 19:49:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:04,785 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) [2024-10-14 19:49:04,786 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 [2024-10-14 19:49:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:04,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:49:04,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-14 19:49:04,977 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:04,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:04,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407752160] [2024-10-14 19:49:04,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407752160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:04,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:04,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:49:04,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655801769] [2024-10-14 19:49:04,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:04,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:49:04,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:04,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:49:04,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:49:04,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-10-14 19:49:04,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 54 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:04,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:04,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-10-14 19:49:04,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:05,196 INFO L124 PetriNetUnfolderBase]: 469/1200 cut-off events. [2024-10-14 19:49:05,196 INFO L125 PetriNetUnfolderBase]: For 4351/4380 co-relation queries the response was YES. [2024-10-14 19:49:05,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4287 conditions, 1200 events. 469/1200 cut-off events. For 4351/4380 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7386 event pairs, 200 based on Foata normal form. 24/1182 useless extension candidates. Maximal degree in co-relation 4252. Up to 769 conditions per place. [2024-10-14 19:49:05,206 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 54 selfloop transitions, 7 changer transitions 1/74 dead transitions. [2024-10-14 19:49:05,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 74 transitions, 631 flow [2024-10-14 19:49:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:49:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:49:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-10-14 19:49:05,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 19:49:05,207 INFO L175 Difference]: Start difference. First operand has 89 places, 54 transitions, 371 flow. Second operand 4 states and 112 transitions. [2024-10-14 19:49:05,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 74 transitions, 631 flow [2024-10-14 19:49:05,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 74 transitions, 614 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 19:49:05,214 INFO L231 Difference]: Finished difference. Result has 89 places, 56 transitions, 408 flow [2024-10-14 19:49:05,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=89, PETRI_TRANSITIONS=56} [2024-10-14 19:49:05,215 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-10-14 19:49:05,215 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 56 transitions, 408 flow [2024-10-14 19:49:05,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:05,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:05,215 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:05,222 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 (23)] Ended with exit code 0 [2024-10-14 19:49:05,415 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 [2024-10-14 19:49:05,416 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:49:05,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1805592456, now seen corresponding path program 2 times [2024-10-14 19:49:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:05,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443046371] [2024-10-14 19:49:05,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:05,417 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 [2024-10-14 19:49:05,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:05,418 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) [2024-10-14 19:49:05,419 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 [2024-10-14 19:49:05,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:49:05,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:05,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:49:05,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:49:05,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:05,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:05,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443046371] [2024-10-14 19:49:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443046371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:05,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:05,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:49:05,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712389789] [2024-10-14 19:49:05,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:05,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:49:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:05,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:49:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:49:05,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 42 [2024-10-14 19:49:05,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 56 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-14 19:49:05,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:05,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 42 [2024-10-14 19:49:05,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:05,881 INFO L124 PetriNetUnfolderBase]: 656/1573 cut-off events. [2024-10-14 19:49:05,881 INFO L125 PetriNetUnfolderBase]: For 6286/6322 co-relation queries the response was YES. [2024-10-14 19:49:05,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5595 conditions, 1573 events. 656/1573 cut-off events. For 6286/6322 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9734 event pairs, 439 based on Foata normal form. 22/1570 useless extension candidates. Maximal degree in co-relation 5560. Up to 971 conditions per place. [2024-10-14 19:49:05,893 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 58 selfloop transitions, 7 changer transitions 1/77 dead transitions. [2024-10-14 19:49:05,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 77 transitions, 699 flow [2024-10-14 19:49:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:49:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:49:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-10-14 19:49:05,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 19:49:05,895 INFO L175 Difference]: Start difference. First operand has 89 places, 56 transitions, 408 flow. Second operand 4 states and 112 transitions. [2024-10-14 19:49:05,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 77 transitions, 699 flow [2024-10-14 19:49:05,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 77 transitions, 691 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 19:49:05,903 INFO L231 Difference]: Finished difference. Result has 92 places, 57 transitions, 436 flow [2024-10-14 19:49:05,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=92, PETRI_TRANSITIONS=57} [2024-10-14 19:49:05,904 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-10-14 19:49:05,904 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 57 transitions, 436 flow [2024-10-14 19:49:05,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-14 19:49:05,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:05,905 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:05,911 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 (24)] Ended with exit code 0 [2024-10-14 19:49:06,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2024-10-14 19:49:06,106 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:49:06,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:06,106 INFO L85 PathProgramCache]: Analyzing trace with hash -154177324, now seen corresponding path program 2 times [2024-10-14 19:49:06,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:06,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621731055] [2024-10-14 19:49:06,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:06,107 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 [2024-10-14 19:49:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:06,109 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2024-10-14 19:49:06,111 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 (25)] Waiting until timeout for monitored process [2024-10-14 19:49:06,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:49:06,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:06,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 19:49:06,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:06,345 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 5 [2024-10-14 19:49:06,350 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 [2024-10-14 19:49:06,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:49:06,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-14 19:49:06,421 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:49:06,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:49:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:49:06,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:49:07,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:07,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621731055] [2024-10-14 19:49:07,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621731055] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:07,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:07,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2024-10-14 19:49:07,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028174762] [2024-10-14 19:49:07,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:07,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:49:07,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:49:07,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:49:08,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-10-14 19:49:08,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 57 transitions, 436 flow. Second operand has 17 states, 17 states have (on average 17.705882352941178) internal successors, (301), 17 states have internal predecessors, (301), 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) [2024-10-14 19:49:08,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:08,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-10-14 19:49:08,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:10,808 INFO L124 PetriNetUnfolderBase]: 1730/3353 cut-off events. [2024-10-14 19:49:10,809 INFO L125 PetriNetUnfolderBase]: For 16237/16387 co-relation queries the response was YES. [2024-10-14 19:49:10,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13209 conditions, 3353 events. 1730/3353 cut-off events. For 16237/16387 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 19616 event pairs, 160 based on Foata normal form. 144/3435 useless extension candidates. Maximal degree in co-relation 13173. Up to 708 conditions per place. [2024-10-14 19:49:10,833 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 251 selfloop transitions, 23 changer transitions 0/282 dead transitions. [2024-10-14 19:49:10,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 282 transitions, 2585 flow [2024-10-14 19:49:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-14 19:49:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-14 19:49:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 484 transitions. [2024-10-14 19:49:10,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-10-14 19:49:10,835 INFO L175 Difference]: Start difference. First operand has 92 places, 57 transitions, 436 flow. Second operand 20 states and 484 transitions. [2024-10-14 19:49:10,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 282 transitions, 2585 flow [2024-10-14 19:49:10,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 282 transitions, 2481 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-14 19:49:10,850 INFO L231 Difference]: Finished difference. Result has 119 places, 68 transitions, 587 flow [2024-10-14 19:49:10,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=587, PETRI_PLACES=119, PETRI_TRANSITIONS=68} [2024-10-14 19:49:10,851 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2024-10-14 19:49:10,851 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 68 transitions, 587 flow [2024-10-14 19:49:10,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.705882352941178) internal successors, (301), 17 states have internal predecessors, (301), 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) [2024-10-14 19:49:10,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:10,852 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:10,861 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 (25)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:11,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2024-10-14 19:49:11,053 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:49:11,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:11,053 INFO L85 PathProgramCache]: Analyzing trace with hash -484529162, now seen corresponding path program 2 times [2024-10-14 19:49:11,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:11,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232199597] [2024-10-14 19:49:11,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:11,054 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 [2024-10-14 19:49:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:11,055 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2024-10-14 19:49:11,056 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 (26)] Waiting until timeout for monitored process [2024-10-14 19:49:11,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:49:11,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:11,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 19:49:11,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:11,172 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 [2024-10-14 19:49:11,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-14 19:49:11,270 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:49:11,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:49:11,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2024-10-14 19:49:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-14 19:49:11,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-14 19:49:13,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232199597] [2024-10-14 19:49:13,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232199597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:13,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:13,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:49:13,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624440746] [2024-10-14 19:49:13,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:13,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:49:13,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:13,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:49:13,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:49:21,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-14 19:49:26,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-14 19:49:27,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-14 19:49:27,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 68 transitions, 587 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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) [2024-10-14 19:49:27,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:27,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-14 19:49:27,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:29,371 INFO L124 PetriNetUnfolderBase]: 1328/2854 cut-off events. [2024-10-14 19:49:29,371 INFO L125 PetriNetUnfolderBase]: For 15149/15216 co-relation queries the response was YES. [2024-10-14 19:49:29,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11590 conditions, 2854 events. 1328/2854 cut-off events. For 15149/15216 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17522 event pairs, 675 based on Foata normal form. 144/2890 useless extension candidates. Maximal degree in co-relation 11543. Up to 1559 conditions per place. [2024-10-14 19:49:29,387 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 44 selfloop transitions, 20 changer transitions 0/79 dead transitions. [2024-10-14 19:49:29,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 79 transitions, 794 flow [2024-10-14 19:49:29,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:49:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:49:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-10-14 19:49:29,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-10-14 19:49:29,389 INFO L175 Difference]: Start difference. First operand has 119 places, 68 transitions, 587 flow. Second operand 6 states and 125 transitions. [2024-10-14 19:49:29,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 79 transitions, 794 flow [2024-10-14 19:49:29,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 79 transitions, 753 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-10-14 19:49:29,405 INFO L231 Difference]: Finished difference. Result has 113 places, 68 transitions, 600 flow [2024-10-14 19:49:29,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=600, PETRI_PLACES=113, PETRI_TRANSITIONS=68} [2024-10-14 19:49:29,406 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2024-10-14 19:49:29,406 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 68 transitions, 600 flow [2024-10-14 19:49:29,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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) [2024-10-14 19:49:29,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:29,406 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:29,409 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 (26)] Ended with exit code 0 [2024-10-14 19:49:29,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2024-10-14 19:49:29,607 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:49:29,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1551671278, now seen corresponding path program 1 times [2024-10-14 19:49:29,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:29,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178228343] [2024-10-14 19:49:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:29,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:29,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:29,610 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2024-10-14 19:49:29,611 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 (27)] Waiting until timeout for monitored process