./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.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/popl20-queue-add-2.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 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:58:21,340 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:58:21,391 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:58:21,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:58:21,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:58:21,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:58:21,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:58:21,422 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:58:21,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:58:21,423 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:58:21,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:58:21,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:58:21,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:58:21,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:58:21,424 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:58:21,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:58:21,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:58:21,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:58:21,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:58:21,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:58:21,425 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:58:21,426 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:58:21,426 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:58:21,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:58:21,426 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:58:21,426 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:58:21,427 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:58:21,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:58:21,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:58:21,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:58:21,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:58:21,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:58:21,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:58:21,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:58:21,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:58:21,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:58:21,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:58:21,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:58:21,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:58:21,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:58:21,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:58:21,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:58:21,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2024-10-14 19:58:21,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:58:21,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:58:21,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:58:21,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:58:21,644 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:58:21,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-14 19:58:22,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:58:22,974 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:58:22,975 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-14 19:58:22,981 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6534972b/72ab3365eeeb427782f4f6646de8531d/FLAG45a8ece8b [2024-10-14 19:58:23,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6534972b/72ab3365eeeb427782f4f6646de8531d [2024-10-14 19:58:23,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:58:23,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:58:23,390 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:58:23,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:58:23,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:58:23,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:58:23" (1/1) ... [2024-10-14 19:58:23,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b491c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:23, skipping insertion in model container [2024-10-14 19:58:23,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:58:23" (1/1) ... [2024-10-14 19:58:23,415 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:58:23,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:58:23,564 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 19:58:23,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66869bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:23, skipping insertion in model container [2024-10-14 19:58:23,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:58:23,565 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:58:23,567 INFO L158 Benchmark]: Toolchain (without parser) took 176.17ms. Allocated memory is still 142.6MB. Free memory was 70.1MB in the beginning and 59.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:58:23,567 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:58:23,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.53ms. Allocated memory is still 142.6MB. Free memory was 69.9MB in the beginning and 59.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:58:23,568 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.53ms. Allocated memory is still 142.6MB. Free memory was 69.9MB in the beginning and 59.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 107]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.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 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:58:25,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:58:25,235 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:58:25,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:58:25,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:58:25,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:58:25,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:58:25,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:58:25,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:58:25,258 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:58:25,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:58:25,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:58:25,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:58:25,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:58:25,259 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:58:25,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:58:25,260 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:58:25,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:58:25,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:58:25,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:58:25,261 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:58:25,262 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:58:25,262 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:58:25,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:58:25,266 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:58:25,266 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:58:25,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:58:25,266 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:58:25,266 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:58:25,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:58:25,266 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:58:25,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:58:25,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:58:25,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:58:25,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:58:25,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:58:25,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:58:25,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:58:25,268 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:58:25,268 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:58:25,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:58:25,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:58:25,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:58:25,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:58:25,269 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:58:25,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2024-10-14 19:58:25,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:58:25,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:58:25,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:58:25,534 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:58:25,534 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:58:25,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-14 19:58:26,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:58:26,916 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:58:26,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-14 19:58:26,924 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e070e38/10b6cc766f734552910210bedc694831/FLAGc728cbf17 [2024-10-14 19:58:27,329 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9e070e38/10b6cc766f734552910210bedc694831 [2024-10-14 19:58:27,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:58:27,332 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:58:27,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:58:27,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:58:27,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:58:27,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4f9a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27, skipping insertion in model container [2024-10-14 19:58:27,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,357 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:58:27,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:58:27,501 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:58:27,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:58:27,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:58:27,529 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:58:27,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:58:27,579 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:58:27,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27 WrapperNode [2024-10-14 19:58:27,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:58:27,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:58:27,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:58:27,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:58:27,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,600 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,623 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 147 [2024-10-14 19:58:27,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:58:27,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:58:27,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:58:27,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:58:27,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,656 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 19:58:27,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:58:27,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:58:27,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:58:27,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:58:27,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (1/1) ... [2024-10-14 19:58:27,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:58:27,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:58:27,701 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 19:58:27,703 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 19:58:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:58:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:58:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:58:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:58:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:58:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:58:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:58:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:58:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:58:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:58:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:58:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:58:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:58:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:58:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:58:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:58:27,736 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 19:58:27,832 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:58:27,833 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:58:28,132 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:58:28,132 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:58:28,348 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:58:28,349 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 19:58:28,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:58:28 BoogieIcfgContainer [2024-10-14 19:58:28,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:58:28,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:58:28,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:58:28,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:58:28,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:58:27" (1/3) ... [2024-10-14 19:58:28,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325fda8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:58:28, skipping insertion in model container [2024-10-14 19:58:28,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:58:27" (2/3) ... [2024-10-14 19:58:28,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325fda8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:58:28, skipping insertion in model container [2024-10-14 19:58:28,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:58:28" (3/3) ... [2024-10-14 19:58:28,356 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2024-10-14 19:58:28,368 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:58:28,369 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-14 19:58:28,369 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:58:28,411 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:58:28,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-14 19:58:28,456 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-14 19:58:28,457 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:58:28,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 80 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-14 19:58:28,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-14 19:58:28,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-10-14 19:58:28,468 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:58:28,472 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;@172e5fda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:58:28,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-14 19:58:28,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:58:28,475 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:58:28,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:58:28,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:28,475 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:58:28,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:28,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:28,479 INFO L85 PathProgramCache]: Analyzing trace with hash 486399, now seen corresponding path program 1 times [2024-10-14 19:58:28,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:28,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498997604] [2024-10-14 19:58:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:28,488 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 19:58:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:28,490 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 19:58:28,492 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 19:58:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:28,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:58:28,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:28,583 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 19:58:28,593 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 19:58:28,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:58:28,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:28,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498997604] [2024-10-14 19:58:28,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498997604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:58:28,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:58:28,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:58:28,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298003344] [2024-10-14 19:58:28,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:58:28,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:58:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:28,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:58:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:58:28,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:58:28,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 19:58:28,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:28,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:58:28,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:28,811 INFO L124 PetriNetUnfolderBase]: 193/366 cut-off events. [2024-10-14 19:58:28,811 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 19:58:28,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 366 events. 193/366 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1756 event pairs, 172 based on Foata normal form. 22/260 useless extension candidates. Maximal degree in co-relation 686. Up to 336 conditions per place. [2024-10-14 19:58:28,817 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 24 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-14 19:58:28,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 130 flow [2024-10-14 19:58:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:58:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:58:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-10-14 19:58:28,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-10-14 19:58:28,828 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 59 transitions. [2024-10-14 19:58:28,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 130 flow [2024-10-14 19:58:28,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 122 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:58:28,832 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2024-10-14 19:58:28,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-14 19:58:28,838 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-10-14 19:58:28,838 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2024-10-14 19:58:28,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 19:58:28,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:28,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:58:28,845 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 (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:58:29,040 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 19:58:29,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:29,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:29,042 INFO L85 PathProgramCache]: Analyzing trace with hash 486400, now seen corresponding path program 1 times [2024-10-14 19:58:29,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:29,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587234650] [2024-10-14 19:58:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:29,042 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 19:58:29,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:29,045 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 19:58:29,046 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 19:58:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:29,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:58:29,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:29,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:58:29,182 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 19:58:29,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:58:29,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:29,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587234650] [2024-10-14 19:58:29,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587234650] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:58:29,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:58:29,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:58:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731174721] [2024-10-14 19:58:29,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:58:29,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:58:29,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:58:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:58:29,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:58:29,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 19:58:29,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:29,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:58:29,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:29,399 INFO L124 PetriNetUnfolderBase]: 194/369 cut-off events. [2024-10-14 19:58:29,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:58:29,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 369 events. 194/369 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1783 event pairs, 172 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 706. Up to 341 conditions per place. [2024-10-14 19:58:29,402 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 26 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-10-14 19:58:29,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 142 flow [2024-10-14 19:58:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:58:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:58:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-10-14 19:58:29,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-10-14 19:58:29,406 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 4 states and 71 transitions. [2024-10-14 19:58:29,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 142 flow [2024-10-14 19:58:29,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:58:29,408 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 97 flow [2024-10-14 19:58:29,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-10-14 19:58:29,409 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-14 19:58:29,409 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 97 flow [2024-10-14 19:58:29,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 19:58:29,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:29,411 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:58:29,413 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 (3)] Ended with exit code 0 [2024-10-14 19:58:29,611 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 19:58:29,612 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:29,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash 467445910, now seen corresponding path program 1 times [2024-10-14 19:58:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:29,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124725665] [2024-10-14 19:58:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:29,613 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 19:58:29,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:29,616 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 19:58:29,617 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 19:58:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:29,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:58:29,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:29,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:58:29,779 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 19:58:29,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:58:29,971 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 19:58:29,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:29,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124725665] [2024-10-14 19:58:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124725665] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:58:29,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:58:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:58:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079074761] [2024-10-14 19:58:29,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:58:29,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:58:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:58:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:58:30,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:58:30,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 19:58:30,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:30,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:58:30,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:30,462 INFO L124 PetriNetUnfolderBase]: 197/378 cut-off events. [2024-10-14 19:58:30,462 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:58:30,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 378 events. 197/378 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1843 event pairs, 172 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 713. Up to 344 conditions per place. [2024-10-14 19:58:30,464 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 26 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2024-10-14 19:58:30,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 211 flow [2024-10-14 19:58:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:58:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:58:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-10-14 19:58:30,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.355 [2024-10-14 19:58:30,467 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 97 flow. Second operand 10 states and 142 transitions. [2024-10-14 19:58:30,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 211 flow [2024-10-14 19:58:30,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:58:30,468 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 174 flow [2024-10-14 19:58:30,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-14 19:58:30,469 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-10-14 19:58:30,469 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 174 flow [2024-10-14 19:58:30,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 19:58:30,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:30,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:58:30,472 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 (4)] Forceful destruction successful, exit code 0 [2024-10-14 19:58:30,671 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 19:58:30,672 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:30,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1608076041, now seen corresponding path program 1 times [2024-10-14 19:58:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:30,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378913010] [2024-10-14 19:58:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:30,674 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 19:58:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:30,675 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 19:58:30,676 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 19:58:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:30,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:58:30,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:30,721 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 19:58:30,735 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 19:58:30,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:58:30,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:30,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378913010] [2024-10-14 19:58:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378913010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:58:30,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:58:30,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:58:30,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641765795] [2024-10-14 19:58:30,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:58:30,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:58:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:58:30,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:58:30,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:58:30,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 19:58:30,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:30,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:58:30,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:30,824 INFO L124 PetriNetUnfolderBase]: 135/268 cut-off events. [2024-10-14 19:58:30,824 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-14 19:58:30,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 268 events. 135/268 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1130 event pairs, 113 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 535. Up to 233 conditions per place. [2024-10-14 19:58:30,828 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 29 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2024-10-14 19:58:30,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 238 flow [2024-10-14 19:58:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:58:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:58:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-14 19:58:30,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-10-14 19:58:30,835 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 174 flow. Second operand 4 states and 66 transitions. [2024-10-14 19:58:30,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 238 flow [2024-10-14 19:58:30,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 208 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 19:58:30,836 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 150 flow [2024-10-14 19:58:30,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-10-14 19:58:30,837 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-10-14 19:58:30,837 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 150 flow [2024-10-14 19:58:30,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 19:58:30,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:30,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:58:30,848 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 19:58:31,038 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 19:58:31,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:31,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:31,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1608076042, now seen corresponding path program 1 times [2024-10-14 19:58:31,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:31,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490942419] [2024-10-14 19:58:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:31,039 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 19:58:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:31,041 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 19:58:31,042 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 19:58:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:31,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:58:31,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:31,112 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 19:58:31,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:58:31,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490942419] [2024-10-14 19:58:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490942419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:58:31,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:58:31,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:58:31,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980981356] [2024-10-14 19:58:31,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:58:31,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:58:31,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:58:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:58:31,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-14 19:58:31,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 19:58:31,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:31,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-14 19:58:31,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:31,227 INFO L124 PetriNetUnfolderBase]: 147/304 cut-off events. [2024-10-14 19:58:31,227 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:58:31,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 304 events. 147/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1277 event pairs, 126 based on Foata normal form. 14/262 useless extension candidates. Maximal degree in co-relation 600. Up to 242 conditions per place. [2024-10-14 19:58:31,229 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 32 selfloop transitions, 2 changer transitions 8/49 dead transitions. [2024-10-14 19:58:31,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 250 flow [2024-10-14 19:58:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:58:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:58:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-10-14 19:58:31,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-10-14 19:58:31,232 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 150 flow. Second operand 4 states and 83 transitions. [2024-10-14 19:58:31,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 250 flow [2024-10-14 19:58:31,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:58:31,233 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 154 flow [2024-10-14 19:58:31,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-10-14 19:58:31,234 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-10-14 19:58:31,234 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 154 flow [2024-10-14 19:58:31,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 19:58:31,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:31,234 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:31,239 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 19:58:31,436 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 19:58:31,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:31,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1399766708, now seen corresponding path program 1 times [2024-10-14 19:58:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740180008] [2024-10-14 19:58:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:31,437 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 19:58:31,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:31,440 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 19:58:31,441 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 19:58:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:31,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:58:31,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:31,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:58:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:58:31,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:58:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:58:32,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:32,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740180008] [2024-10-14 19:58:32,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740180008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:58:32,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:58:32,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:58:32,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461305628] [2024-10-14 19:58:32,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:58:32,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:58:32,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:32,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:58:32,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:58:32,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:58:32,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 154 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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 19:58:32,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:32,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:58:32,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:32,871 INFO L124 PetriNetUnfolderBase]: 292/589 cut-off events. [2024-10-14 19:58:32,871 INFO L125 PetriNetUnfolderBase]: For 89/92 co-relation queries the response was YES. [2024-10-14 19:58:32,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 589 events. 292/589 cut-off events. For 89/92 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2894 event pairs, 245 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 1306. Up to 232 conditions per place. [2024-10-14 19:58:32,874 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 56 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-10-14 19:58:32,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 372 flow [2024-10-14 19:58:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:58:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:58:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-10-14 19:58:32,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-14 19:58:32,877 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 154 flow. Second operand 9 states and 162 transitions. [2024-10-14 19:58:32,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 372 flow [2024-10-14 19:58:32,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:58:32,880 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 187 flow [2024-10-14 19:58:32,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=187, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2024-10-14 19:58:32,881 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2024-10-14 19:58:32,882 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 187 flow [2024-10-14 19:58:32,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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 19:58:32,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:32,882 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:58:32,886 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 19:58:33,083 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 19:58:33,083 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:33,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash 860687704, now seen corresponding path program 2 times [2024-10-14 19:58:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139306556] [2024-10-14 19:58:33,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:58:33,084 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 19:58:33,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:33,085 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 19:58:33,090 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 19:58:33,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:58:33,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:58:33,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:58:33,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:33,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:58:33,343 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 19:58:33,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:58:33,728 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 19:58:33,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:33,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139306556] [2024-10-14 19:58:33,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139306556] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:58:33,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:58:33,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:58:33,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995250934] [2024-10-14 19:58:33,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:58:33,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:58:33,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:33,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:58:33,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:58:33,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:58:33,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 187 flow. Second operand has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 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 19:58:33,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:33,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:58:33,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:35,381 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2024-10-14 19:58:35,382 INFO L125 PetriNetUnfolderBase]: For 331/343 co-relation queries the response was YES. [2024-10-14 19:58:35,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 607 events. 298/607 cut-off events. For 331/343 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3003 event pairs, 245 based on Foata normal form. 6/550 useless extension candidates. Maximal degree in co-relation 1385. Up to 527 conditions per place. [2024-10-14 19:58:35,385 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 30 changer transitions 0/59 dead transitions. [2024-10-14 19:58:35,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 59 transitions, 407 flow [2024-10-14 19:58:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:58:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:58:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 279 transitions. [2024-10-14 19:58:35,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3170454545454545 [2024-10-14 19:58:35,387 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 187 flow. Second operand 22 states and 279 transitions. [2024-10-14 19:58:35,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 59 transitions, 407 flow [2024-10-14 19:58:35,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 397 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:58:35,390 INFO L231 Difference]: Finished difference. Result has 78 places, 59 transitions, 381 flow [2024-10-14 19:58:35,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=381, PETRI_PLACES=78, PETRI_TRANSITIONS=59} [2024-10-14 19:58:35,390 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2024-10-14 19:58:35,391 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 59 transitions, 381 flow [2024-10-14 19:58:35,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 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 19:58:35,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:35,391 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:35,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-14 19:58:35,593 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 19:58:35,594 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:35,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash -204731726, now seen corresponding path program 2 times [2024-10-14 19:58:35,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:35,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761960601] [2024-10-14 19:58:35,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:58:35,595 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 19:58:35,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:35,597 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 19:58:35,598 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 19:58:35,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:58:35,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:58:35,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:58:35,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:35,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:58:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 19:58:35,750 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:58:35,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:35,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761960601] [2024-10-14 19:58:35,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761960601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:58:35,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:58:35,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:58:35,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813315439] [2024-10-14 19:58:35,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:58:35,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:58:35,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:58:35,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:58:35,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-14 19:58:35,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 59 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 19:58:35,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:35,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-14 19:58:35,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:35,872 INFO L124 PetriNetUnfolderBase]: 248/517 cut-off events. [2024-10-14 19:58:35,872 INFO L125 PetriNetUnfolderBase]: For 306/318 co-relation queries the response was YES. [2024-10-14 19:58:35,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 517 events. 248/517 cut-off events. For 306/318 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2447 event pairs, 198 based on Foata normal form. 27/493 useless extension candidates. Maximal degree in co-relation 1179. Up to 436 conditions per place. [2024-10-14 19:58:35,874 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 38 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2024-10-14 19:58:35,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 56 transitions, 455 flow [2024-10-14 19:58:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:58:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:58:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-10-14 19:58:35,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-10-14 19:58:35,876 INFO L175 Difference]: Start difference. First operand has 78 places, 59 transitions, 381 flow. Second operand 4 states and 67 transitions. [2024-10-14 19:58:35,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 56 transitions, 455 flow [2024-10-14 19:58:35,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 374 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-10-14 19:58:35,883 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 298 flow [2024-10-14 19:58:35,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-10-14 19:58:35,883 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2024-10-14 19:58:35,886 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 298 flow [2024-10-14 19:58:35,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 19:58:35,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:35,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:35,890 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 19:58:36,086 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 19:58:36,087 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:36,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1502997695, now seen corresponding path program 1 times [2024-10-14 19:58:36,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:36,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275840306] [2024-10-14 19:58:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:36,088 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 19:58:36,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:36,089 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 19:58:36,090 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 19:58:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:36,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 19:58:36,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:58:36,172 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:58:36,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:36,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275840306] [2024-10-14 19:58:36,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275840306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:58:36,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:58:36,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:58:36,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91039828] [2024-10-14 19:58:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:58:36,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:58:36,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:58:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:58:36,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-14 19:58:36,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 19:58:36,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:36,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-14 19:58:36,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:36,266 INFO L124 PetriNetUnfolderBase]: 302/646 cut-off events. [2024-10-14 19:58:36,267 INFO L125 PetriNetUnfolderBase]: For 150/159 co-relation queries the response was YES. [2024-10-14 19:58:36,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 646 events. 302/646 cut-off events. For 150/159 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2980 event pairs, 81 based on Foata normal form. 9/619 useless extension candidates. Maximal degree in co-relation 1388. Up to 394 conditions per place. [2024-10-14 19:58:36,270 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 53 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-10-14 19:58:36,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 429 flow [2024-10-14 19:58:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:58:36,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:58:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-14 19:58:36,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-10-14 19:58:36,271 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 298 flow. Second operand 3 states and 61 transitions. [2024-10-14 19:58:36,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 429 flow [2024-10-14 19:58:36,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 417 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:58:36,274 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 309 flow [2024-10-14 19:58:36,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-14 19:58:36,274 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-10-14 19:58:36,275 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 309 flow [2024-10-14 19:58:36,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 19:58:36,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:36,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:36,279 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 (10)] Forceful destruction successful, exit code 0 [2024-10-14 19:58:36,475 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 19:58:36,475 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:36,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash 952237377, now seen corresponding path program 2 times [2024-10-14 19:58:36,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:36,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460672728] [2024-10-14 19:58:36,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:58:36,476 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 19:58:36,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:36,478 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 19:58:36,479 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 19:58:36,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:58:36,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:58:36,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:58:36,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:58:36,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:58:36,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:36,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460672728] [2024-10-14 19:58:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460672728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:58:36,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:58:36,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 19:58:36,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971894135] [2024-10-14 19:58:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:58:36,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 19:58:36,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 19:58:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-14 19:58:36,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:58:36,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 309 flow. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 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 19:58:36,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:36,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:58:36,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:36,974 INFO L124 PetriNetUnfolderBase]: 482/943 cut-off events. [2024-10-14 19:58:36,974 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-10-14 19:58:36,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 943 events. 482/943 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4479 event pairs, 111 based on Foata normal form. 3/913 useless extension candidates. Maximal degree in co-relation 2315. Up to 571 conditions per place. [2024-10-14 19:58:36,978 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 48 selfloop transitions, 13 changer transitions 20/85 dead transitions. [2024-10-14 19:58:36,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 536 flow [2024-10-14 19:58:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:58:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:58:36,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-10-14 19:58:36,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-10-14 19:58:36,979 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 309 flow. Second operand 8 states and 118 transitions. [2024-10-14 19:58:36,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 536 flow [2024-10-14 19:58:36,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 521 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-14 19:58:36,983 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 328 flow [2024-10-14 19:58:36,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=328, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2024-10-14 19:58:36,984 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-10-14 19:58:36,984 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 328 flow [2024-10-14 19:58:36,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 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 19:58:36,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:36,986 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-14 19:58:36,989 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 (11)] Ended with exit code 0 [2024-10-14 19:58:37,186 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 19:58:37,187 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:37,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1503701596, now seen corresponding path program 3 times [2024-10-14 19:58:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:37,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598541039] [2024-10-14 19:58:37,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:58:37,188 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 19:58:37,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:37,190 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 19:58:37,191 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 19:58:37,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-14 19:58:37,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:58:37,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:58:37,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:37,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:58:37,768 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 19:58:37,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:58:39,214 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 19:58:39,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598541039] [2024-10-14 19:58:39,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598541039] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:58:39,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:58:39,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-14 19:58:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790006674] [2024-10-14 19:58:39,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:58:39,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 19:58:39,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 19:58:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-14 19:58:39,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:58:39,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 328 flow. Second operand has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 26 states have internal predecessors, (306), 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 19:58:39,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:39,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:58:39,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:50,661 INFO L124 PetriNetUnfolderBase]: 251/556 cut-off events. [2024-10-14 19:58:50,661 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-10-14 19:58:50,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 556 events. 251/556 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2517 event pairs, 198 based on Foata normal form. 12/547 useless extension candidates. Maximal degree in co-relation 1511. Up to 459 conditions per place. [2024-10-14 19:58:50,663 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 21 selfloop transitions, 66 changer transitions 0/93 dead transitions. [2024-10-14 19:58:50,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 93 transitions, 766 flow [2024-10-14 19:58:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-14 19:58:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-14 19:58:50,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 558 transitions. [2024-10-14 19:58:50,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3032608695652174 [2024-10-14 19:58:50,666 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 328 flow. Second operand 46 states and 558 transitions. [2024-10-14 19:58:50,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 93 transitions, 766 flow [2024-10-14 19:58:50,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 93 transitions, 710 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 19:58:50,669 INFO L231 Difference]: Finished difference. Result has 124 places, 93 transitions, 722 flow [2024-10-14 19:58:50,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=722, PETRI_PLACES=124, PETRI_TRANSITIONS=93} [2024-10-14 19:58:50,670 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2024-10-14 19:58:50,670 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 93 transitions, 722 flow [2024-10-14 19:58:50,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 26 states have internal predecessors, (306), 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 19:58:50,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:50,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:50,675 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 19:58:50,874 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 19:58:50,875 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:50,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1887570986, now seen corresponding path program 1 times [2024-10-14 19:58:50,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:50,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923850225] [2024-10-14 19:58:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:50,875 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 19:58:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:50,876 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 19:58:50,877 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 19:58:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:50,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:58:50,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:58:50,977 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:58:50,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:50,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923850225] [2024-10-14 19:58:50,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923850225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:58:50,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:58:50,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:58:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295997683] [2024-10-14 19:58:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:58:50,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:58:50,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:58:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:58:50,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:58:50,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 93 transitions, 722 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 19:58:50,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:50,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:58:50,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:51,185 INFO L124 PetriNetUnfolderBase]: 377/928 cut-off events. [2024-10-14 19:58:51,185 INFO L125 PetriNetUnfolderBase]: For 429/429 co-relation queries the response was YES. [2024-10-14 19:58:51,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 928 events. 377/928 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4751 event pairs, 21 based on Foata normal form. 33/958 useless extension candidates. Maximal degree in co-relation 2157. Up to 283 conditions per place. [2024-10-14 19:58:51,190 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 103 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2024-10-14 19:58:51,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 113 transitions, 995 flow [2024-10-14 19:58:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:58:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:58:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-10-14 19:58:51,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-10-14 19:58:51,191 INFO L175 Difference]: Start difference. First operand has 124 places, 93 transitions, 722 flow. Second operand 5 states and 93 transitions. [2024-10-14 19:58:51,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 113 transitions, 995 flow [2024-10-14 19:58:51,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 113 transitions, 833 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-14 19:58:51,196 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 582 flow [2024-10-14 19:58:51,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=582, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-10-14 19:58:51,198 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2024-10-14 19:58:51,198 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 582 flow [2024-10-14 19:58:51,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 19:58:51,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:51,198 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:51,202 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 19:58:51,399 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 19:58:51,399 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:51,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:51,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1259751146, now seen corresponding path program 1 times [2024-10-14 19:58:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:51,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432184038] [2024-10-14 19:58:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:51,400 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 19:58:51,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:51,404 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 19:58:51,405 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 19:58:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:51,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:58:51,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:58:51,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:58:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:58:51,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432184038] [2024-10-14 19:58:51,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432184038] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:58:51,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:58:51,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-14 19:58:51,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039574688] [2024-10-14 19:58:51,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:58:51,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:58:51,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:51,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:58:51,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:58:51,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-14 19:58:51,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 582 flow. Second operand has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 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 19:58:51,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:51,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-14 19:58:51,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:52,089 INFO L124 PetriNetUnfolderBase]: 278/636 cut-off events. [2024-10-14 19:58:52,089 INFO L125 PetriNetUnfolderBase]: For 638/638 co-relation queries the response was YES. [2024-10-14 19:58:52,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 636 events. 278/636 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3010 event pairs, 179 based on Foata normal form. 24/635 useless extension candidates. Maximal degree in co-relation 1714. Up to 408 conditions per place. [2024-10-14 19:58:52,091 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 41 selfloop transitions, 46 changer transitions 18/112 dead transitions. [2024-10-14 19:58:52,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 112 transitions, 852 flow [2024-10-14 19:58:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:58:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:58:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-10-14 19:58:52,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-10-14 19:58:52,093 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 582 flow. Second operand 8 states and 130 transitions. [2024-10-14 19:58:52,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 112 transitions, 852 flow [2024-10-14 19:58:52,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 849 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:58:52,098 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 671 flow [2024-10-14 19:58:52,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=671, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-10-14 19:58:52,099 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 76 predicate places. [2024-10-14 19:58:52,099 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 671 flow [2024-10-14 19:58:52,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 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 19:58:52,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:52,100 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:52,104 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 19:58:52,300 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 19:58:52,301 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:52,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1731858356, now seen corresponding path program 2 times [2024-10-14 19:58:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:52,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41472036] [2024-10-14 19:58:52,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:58:52,302 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 19:58:52,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:52,304 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 19:58:52,305 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 19:58:52,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:58:52,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:58:52,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:58:52,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:58:52,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:58:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:58:52,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:52,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41472036] [2024-10-14 19:58:52,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41472036] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:58:52,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:58:52,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 7 [2024-10-14 19:58:52,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480115423] [2024-10-14 19:58:52,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:58:52,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 19:58:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:52,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 19:58:52,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:58:52,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-14 19:58:52,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 671 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:58:52,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:52,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-14 19:58:52,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:52,831 INFO L124 PetriNetUnfolderBase]: 434/1121 cut-off events. [2024-10-14 19:58:52,832 INFO L125 PetriNetUnfolderBase]: For 1061/1109 co-relation queries the response was YES. [2024-10-14 19:58:52,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 1121 events. 434/1121 cut-off events. For 1061/1109 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6768 event pairs, 82 based on Foata normal form. 34/1131 useless extension candidates. Maximal degree in co-relation 2840. Up to 363 conditions per place. [2024-10-14 19:58:52,837 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 107 selfloop transitions, 9 changer transitions 0/123 dead transitions. [2024-10-14 19:58:52,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 123 transitions, 1001 flow [2024-10-14 19:58:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:58:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:58:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-10-14 19:58:52,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-10-14 19:58:52,838 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 671 flow. Second operand 4 states and 92 transitions. [2024-10-14 19:58:52,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 123 transitions, 1001 flow [2024-10-14 19:58:52,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 937 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-14 19:58:52,844 INFO L231 Difference]: Finished difference. Result has 112 places, 101 transitions, 698 flow [2024-10-14 19:58:52,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=112, PETRI_TRANSITIONS=101} [2024-10-14 19:58:52,845 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2024-10-14 19:58:52,845 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 101 transitions, 698 flow [2024-10-14 19:58:52,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:58:52,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:52,845 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:52,851 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 19:58:53,052 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 19:58:53,052 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:58:53,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:53,052 INFO L85 PathProgramCache]: Analyzing trace with hash 321998182, now seen corresponding path program 3 times [2024-10-14 19:58:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:58:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892647514] [2024-10-14 19:58:53,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:58:53,053 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 19:58:53,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:58:53,054 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 19:58:53,054 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 19:58:53,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:58:53,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:58:53,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:58:53,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:58:53,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:58:53,781 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-14 19:58:53,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2024-10-14 19:58:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:58:57,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:58:57,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892647514] [2024-10-14 19:58:57,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892647514] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:58:57,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:58:57,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-10-14 19:58:57,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775340908] [2024-10-14 19:58:57,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:58:57,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 19:58:57,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:58:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 19:58:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-10-14 19:58:57,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 19:58:57,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 101 transitions, 698 flow. Second operand has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 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 19:58:57,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:57,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 19:58:57,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:59,884 INFO L124 PetriNetUnfolderBase]: 1592/3019 cut-off events. [2024-10-14 19:58:59,885 INFO L125 PetriNetUnfolderBase]: For 3297/3297 co-relation queries the response was YES. [2024-10-14 19:58:59,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8337 conditions, 3019 events. 1592/3019 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17784 event pairs, 238 based on Foata normal form. 4/3023 useless extension candidates. Maximal degree in co-relation 8265. Up to 1093 conditions per place. [2024-10-14 19:58:59,899 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 137 selfloop transitions, 55 changer transitions 10/205 dead transitions. [2024-10-14 19:58:59,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 205 transitions, 1523 flow [2024-10-14 19:58:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:58:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:58:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 237 transitions. [2024-10-14 19:58:59,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34852941176470587 [2024-10-14 19:58:59,900 INFO L175 Difference]: Start difference. First operand has 112 places, 101 transitions, 698 flow. Second operand 17 states and 237 transitions. [2024-10-14 19:58:59,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 205 transitions, 1523 flow [2024-10-14 19:58:59,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 205 transitions, 1489 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-10-14 19:58:59,909 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 998 flow [2024-10-14 19:58:59,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=998, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2024-10-14 19:58:59,910 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 94 predicate places. [2024-10-14 19:58:59,910 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 998 flow [2024-10-14 19:58:59,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 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 19:58:59,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:59,911 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:59,914 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 19:59:00,111 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 19:59:00,111 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:59:00,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:59:00,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1818334018, now seen corresponding path program 4 times [2024-10-14 19:59:00,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:59:00,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523367760] [2024-10-14 19:59:00,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:59:00,112 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 19:59:00,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:59:00,113 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 19:59:00,114 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 19:59:00,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:59:00,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:59:00,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:59:00,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:59:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:59:00,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:59:00,742 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-14 19:59:00,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2024-10-14 19:59:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:59:03,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:59:03,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523367760] [2024-10-14 19:59:03,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523367760] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:59:03,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:59:03,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-10-14 19:59:03,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537733062] [2024-10-14 19:59:03,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:59:03,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 19:59:03,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:59:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 19:59:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-10-14 19:59:03,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 19:59:03,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 998 flow. Second operand has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 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 19:59:03,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:59:03,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 19:59:03,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:59:07,687 INFO L124 PetriNetUnfolderBase]: 2272/4155 cut-off events. [2024-10-14 19:59:07,687 INFO L125 PetriNetUnfolderBase]: For 7737/7737 co-relation queries the response was YES. [2024-10-14 19:59:07,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14110 conditions, 4155 events. 2272/4155 cut-off events. For 7737/7737 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 25522 event pairs, 144 based on Foata normal form. 2/4157 useless extension candidates. Maximal degree in co-relation 14047. Up to 957 conditions per place. [2024-10-14 19:59:07,709 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 169 selfloop transitions, 120 changer transitions 18/310 dead transitions. [2024-10-14 19:59:07,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 310 transitions, 2484 flow [2024-10-14 19:59:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-14 19:59:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-14 19:59:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 424 transitions. [2024-10-14 19:59:07,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-10-14 19:59:07,711 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 998 flow. Second operand 32 states and 424 transitions. [2024-10-14 19:59:07,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 310 transitions, 2484 flow [2024-10-14 19:59:07,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 310 transitions, 2416 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-10-14 19:59:07,726 INFO L231 Difference]: Finished difference. Result has 172 places, 195 transitions, 1789 flow [2024-10-14 19:59:07,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1789, PETRI_PLACES=172, PETRI_TRANSITIONS=195} [2024-10-14 19:59:07,726 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-10-14 19:59:07,727 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 195 transitions, 1789 flow [2024-10-14 19:59:07,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 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 19:59:07,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:59:07,727 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:59:07,732 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 19:59:07,927 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 19:59:07,928 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:59:07,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:59:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1757660054, now seen corresponding path program 5 times [2024-10-14 19:59:07,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:59:07,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706312178] [2024-10-14 19:59:07,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:59:07,928 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 19:59:07,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:59:07,930 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 19:59:07,930 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 19:59:08,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 19:59:08,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:59:08,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:59:08,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:59:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:59:08,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:59:17,655 INFO L349 Elim1Store]: treesize reduction 672, result has 23.7 percent of original size [2024-10-14 19:59:17,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 181 treesize of output 247