./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-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:25:29,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:25:29,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:25:29,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:25:29,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:25:29,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:25:29,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:25:29,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:25:29,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:25:29,676 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:25:29,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:25:29,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:25:29,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:25:29,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:25:29,678 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:25:29,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:25:29,679 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:25:29,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:25:29,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:25:29,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:25:29,683 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:25:29,683 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:25:29,683 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:25:29,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:25:29,684 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:25:29,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:25:29,684 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:25:29,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:25:29,684 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:25:29,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:25:29,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:25:29,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:25:29,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:25:29,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:25:29,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:25:29,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:25:29,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:25:29,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:25:29,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:25:29,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:25:29,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:25:29,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:25:29,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-10-24 19:25:29,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:25:29,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:25:29,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:25:29,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:25:29,908 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:25:29,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-24 19:25:31,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:25:31,464 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:25:31,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-24 19:25:31,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13fbb4a4/499c6fad179a4b24b0c35c69b5df5160/FLAG916db50f6 [2024-10-24 19:25:31,502 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13fbb4a4/499c6fad179a4b24b0c35c69b5df5160 [2024-10-24 19:25:31,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:25:31,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:25:31,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:25:31,506 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:25:31,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:25:31,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:31" (1/1) ... [2024-10-24 19:25:31,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddc4290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:31, skipping insertion in model container [2024-10-24 19:25:31,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:31" (1/1) ... [2024-10-24 19:25:31,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:25:31,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:25:31,794 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-24 19:25:31,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@861edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:31, skipping insertion in model container [2024-10-24 19:25:31,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:25:31,795 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:25:31,796 INFO L158 Benchmark]: Toolchain (without parser) took 290.79ms. Allocated memory is still 222.3MB. Free memory was 193.9MB in the beginning and 186.9MB in the end (delta: 7.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-10-24 19:25:31,796 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 97.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:25:31,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.11ms. Allocated memory is still 222.3MB. Free memory was 193.7MB in the beginning and 186.9MB in the end (delta: 6.8MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-10-24 19:25:31,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 97.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.11ms. Allocated memory is still 222.3MB. Free memory was 193.7MB in the beginning and 186.9MB in the end (delta: 6.8MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 159]: 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-prod-cons3.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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:25:33,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:25:33,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:25:33,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:25:33,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:25:33,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:25:33,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:25:33,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:25:33,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:25:33,593 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:25:33,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:25:33,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:25:33,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:25:33,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:25:33,594 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:25:33,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:25:33,596 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:25:33,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:25:33,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:25:33,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:25:33,599 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:25:33,600 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:25:33,600 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:25:33,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:25:33,600 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:25:33,600 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:25:33,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:25:33,601 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:25:33,601 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:25:33,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:25:33,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:25:33,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:25:33,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:25:33,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:25:33,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:25:33,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:25:33,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:25:33,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:25:33,602 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:25:33,603 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:25:33,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:25:33,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:25:33,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:25:33,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:25:33,605 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:25:33,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-10-24 19:25:33,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:25:33,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:25:33,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:25:33,910 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:25:33,910 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:25:33,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-24 19:25:35,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:25:35,598 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:25:35,603 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-24 19:25:35,615 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e186ae6b6/f3afb0e32b484628b4f792577ee9f93e/FLAG8a3925db8 [2024-10-24 19:25:35,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e186ae6b6/f3afb0e32b484628b4f792577ee9f93e [2024-10-24 19:25:35,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:25:35,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:25:35,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:25:35,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:25:35,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:25:35,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:35" (1/1) ... [2024-10-24 19:25:35,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2e1197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35, skipping insertion in model container [2024-10-24 19:25:35,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:35" (1/1) ... [2024-10-24 19:25:35,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:25:36,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:25:36,263 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:25:36,268 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:25:36,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:25:36,300 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:25:36,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:25:36,347 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:25:36,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36 WrapperNode [2024-10-24 19:25:36,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:25:36,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:25:36,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:25:36,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:25:36,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,393 INFO L138 Inliner]: procedures = 27, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 251 [2024-10-24 19:25:36,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:25:36,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:25:36,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:25:36,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:25:36,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,435 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-24 19:25:36,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:25:36,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:25:36,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:25:36,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:25:36,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (1/1) ... [2024-10-24 19:25:36,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:25:36,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:25:36,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:25:36,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:25:36,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:25:36,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:25:36,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:25:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:25:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:25:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:25:36,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:25:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:25:36,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:25:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 19:25:36,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 19:25:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-24 19:25:36,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-24 19:25:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:25:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:25:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:25:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:25:36,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:25:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:25:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:25:36,549 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:25:36,639 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:25:36,641 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:25:37,059 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:25:37,060 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:25:37,307 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:25:37,307 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-24 19:25:37,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:25:37 BoogieIcfgContainer [2024-10-24 19:25:37,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:25:37,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:25:37,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:25:37,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:25:37,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:25:35" (1/3) ... [2024-10-24 19:25:37,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d9ca75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:25:37, skipping insertion in model container [2024-10-24 19:25:37,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:36" (2/3) ... [2024-10-24 19:25:37,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d9ca75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:25:37, skipping insertion in model container [2024-10-24 19:25:37,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:25:37" (3/3) ... [2024-10-24 19:25:37,313 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-10-24 19:25:37,324 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:25:37,324 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-24 19:25:37,324 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:25:37,364 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-24 19:25:37,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 67 transitions, 162 flow [2024-10-24 19:25:37,415 INFO L124 PetriNetUnfolderBase]: 6/63 cut-off events. [2024-10-24 19:25:37,416 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 19:25:37,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 63 events. 6/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-10-24 19:25:37,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 67 transitions, 162 flow [2024-10-24 19:25:37,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 62 transitions, 148 flow [2024-10-24 19:25:37,428 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:25:37,433 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;@2abf5929, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:25:37,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-24 19:25:37,437 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:25:37,437 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:25:37,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:25:37,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:37,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:25:37,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:25:37,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash 727897, now seen corresponding path program 1 times [2024-10-24 19:25:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:37,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568916467] [2024-10-24 19:25:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:37,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:37,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:37,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:37,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 19:25:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:37,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:25:37,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:37,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:25:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:37,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:37,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:37,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568916467] [2024-10-24 19:25:37,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568916467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:37,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:37,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:25:37,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930395779] [2024-10-24 19:25:37,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:37,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:25:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:37,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:25:37,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:25:37,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-24 19:25:37,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:37,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:37,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-24 19:25:37,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:38,796 INFO L124 PetriNetUnfolderBase]: 7841/11938 cut-off events. [2024-10-24 19:25:38,797 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2024-10-24 19:25:38,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23244 conditions, 11938 events. 7841/11938 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 86888 event pairs, 6340 based on Foata normal form. 1/8189 useless extension candidates. Maximal degree in co-relation 22236. Up to 10274 conditions per place. [2024-10-24 19:25:38,924 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 39 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-24 19:25:38,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 222 flow [2024-10-24 19:25:38,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:25:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:25:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-10-24 19:25:38,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5472636815920398 [2024-10-24 19:25:38,937 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 148 flow. Second operand 3 states and 110 transitions. [2024-10-24 19:25:38,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 222 flow [2024-10-24 19:25:38,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 206 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-24 19:25:38,953 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 128 flow [2024-10-24 19:25:38,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-10-24 19:25:38,959 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2024-10-24 19:25:38,960 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 128 flow [2024-10-24 19:25:38,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:38,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:38,961 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:25:38,969 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 [2024-10-24 19:25:39,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:39,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:25:39,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash 727898, now seen corresponding path program 1 times [2024-10-24 19:25:39,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:39,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154849931] [2024-10-24 19:25:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:39,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:39,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:39,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:39,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 19:25:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:39,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:25:39,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:39,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:25:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:39,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:39,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:39,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154849931] [2024-10-24 19:25:39,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154849931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:39,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:39,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:25:39,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297260217] [2024-10-24 19:25:39,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:39,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:25:39,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:25:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:25:39,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-24 19:25:39,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:39,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:39,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-24 19:25:39,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:40,467 INFO L124 PetriNetUnfolderBase]: 7843/11944 cut-off events. [2024-10-24 19:25:40,468 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-24 19:25:40,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22686 conditions, 11944 events. 7843/11944 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 86927 event pairs, 6340 based on Foata normal form. 0/8192 useless extension candidates. Maximal degree in co-relation 22650. Up to 10283 conditions per place. [2024-10-24 19:25:40,525 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 42 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-10-24 19:25:40,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 240 flow [2024-10-24 19:25:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:25:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:25:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-24 19:25:40,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5186567164179104 [2024-10-24 19:25:40,527 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 128 flow. Second operand 4 states and 139 transitions. [2024-10-24 19:25:40,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 240 flow [2024-10-24 19:25:40,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:25:40,529 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 180 flow [2024-10-24 19:25:40,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2024-10-24 19:25:40,530 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2024-10-24 19:25:40,530 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 180 flow [2024-10-24 19:25:40,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:40,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:40,531 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:25:40,534 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 [2024-10-24 19:25:40,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:40,732 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:25:40,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash 699533463, now seen corresponding path program 1 times [2024-10-24 19:25:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:40,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805634563] [2024-10-24 19:25:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:40,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:40,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:40,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:40,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-24 19:25:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:40,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:25:40,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:40,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:25:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:40,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:41,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:41,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805634563] [2024-10-24 19:25:41,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805634563] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:41,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:25:41,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:25:41,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802678865] [2024-10-24 19:25:41,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:41,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:25:41,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:41,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:25:41,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:25:41,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-24 19:25:41,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 180 flow. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:41,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:41,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-24 19:25:41,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:43,620 INFO L124 PetriNetUnfolderBase]: 7849/11962 cut-off events. [2024-10-24 19:25:43,620 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-24 19:25:43,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22764 conditions, 11962 events. 7849/11962 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 86968 event pairs, 6340 based on Foata normal form. 0/8208 useless extension candidates. Maximal degree in co-relation 22661. Up to 10286 conditions per place. [2024-10-24 19:25:43,710 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 42 selfloop transitions, 25 changer transitions 0/82 dead transitions. [2024-10-24 19:25:43,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 392 flow [2024-10-24 19:25:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:25:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:25:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 293 transitions. [2024-10-24 19:25:43,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4373134328358209 [2024-10-24 19:25:43,717 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 180 flow. Second operand 10 states and 293 transitions. [2024-10-24 19:25:43,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 392 flow [2024-10-24 19:25:43,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:25:43,720 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 342 flow [2024-10-24 19:25:43,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=342, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-10-24 19:25:43,720 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2024-10-24 19:25:43,724 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 342 flow [2024-10-24 19:25:43,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:43,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:43,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:43,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-24 19:25:43,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:43,928 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:25:43,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:43,930 INFO L85 PathProgramCache]: Analyzing trace with hash 798080990, now seen corresponding path program 1 times [2024-10-24 19:25:43,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:43,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772359672] [2024-10-24 19:25:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:43,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:43,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:43,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:43,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-24 19:25:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:43,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:25:43,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:44,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:44,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772359672] [2024-10-24 19:25:44,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772359672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:44,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:44,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:25:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560099767] [2024-10-24 19:25:44,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:44,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:25:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:44,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:25:44,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:25:44,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-10-24 19:25:44,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:44,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:44,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-10-24 19:25:44,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:45,106 INFO L124 PetriNetUnfolderBase]: 8980/13605 cut-off events. [2024-10-24 19:25:45,107 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-24 19:25:45,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26213 conditions, 13605 events. 8980/13605 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 1036. Compared 98886 event pairs, 7442 based on Foata normal form. 264/9806 useless extension candidates. Maximal degree in co-relation 26125. Up to 10301 conditions per place. [2024-10-24 19:25:45,162 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 101 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-10-24 19:25:45,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 121 transitions, 708 flow [2024-10-24 19:25:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:25:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:25:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-10-24 19:25:45,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6455223880597015 [2024-10-24 19:25:45,164 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 342 flow. Second operand 4 states and 173 transitions. [2024-10-24 19:25:45,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 121 transitions, 708 flow [2024-10-24 19:25:45,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 614 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-10-24 19:25:45,168 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 297 flow [2024-10-24 19:25:45,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-10-24 19:25:45,171 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2024-10-24 19:25:45,171 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 297 flow [2024-10-24 19:25:45,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:45,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:45,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:45,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-24 19:25:45,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:45,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:25:45,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:45,380 INFO L85 PathProgramCache]: Analyzing trace with hash -999355557, now seen corresponding path program 1 times [2024-10-24 19:25:45,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:45,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467832916] [2024-10-24 19:25:45,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:45,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:45,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:45,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:45,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-24 19:25:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:45,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:25:45,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:45,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:25:45,507 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-24 19:25:45,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-24 19:25:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:25:45,562 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:45,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467832916] [2024-10-24 19:25:45,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467832916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:45,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:45,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:25:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464004612] [2024-10-24 19:25:45,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:45,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:25:45,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:25:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:25:45,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-24 19:25:45,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:45,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:45,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-24 19:25:45,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:46,368 INFO L124 PetriNetUnfolderBase]: 7000/10963 cut-off events. [2024-10-24 19:25:46,368 INFO L125 PetriNetUnfolderBase]: For 826/826 co-relation queries the response was YES. [2024-10-24 19:25:46,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22431 conditions, 10963 events. 7000/10963 cut-off events. For 826/826 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 78980 event pairs, 5898 based on Foata normal form. 0/8336 useless extension candidates. Maximal degree in co-relation 22355. Up to 9362 conditions per place. [2024-10-24 19:25:46,440 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 52 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-10-24 19:25:46,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 415 flow [2024-10-24 19:25:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:25:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:25:46,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-10-24 19:25:46,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4507462686567164 [2024-10-24 19:25:46,442 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 297 flow. Second operand 5 states and 151 transitions. [2024-10-24 19:25:46,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 415 flow [2024-10-24 19:25:46,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 411 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 19:25:46,446 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 307 flow [2024-10-24 19:25:46,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-10-24 19:25:46,447 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 7 predicate places. [2024-10-24 19:25:46,447 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 307 flow [2024-10-24 19:25:46,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:46,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:46,447 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:46,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-24 19:25:46,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:46,649 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:25:46,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:46,649 INFO L85 PathProgramCache]: Analyzing trace with hash -999355556, now seen corresponding path program 1 times [2024-10-24 19:25:46,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:46,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860831413] [2024-10-24 19:25:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:46,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:46,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:46,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:46,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-24 19:25:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:46,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 19:25:46,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:46,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:25:46,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:25:46,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 19:25:46,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 19:25:46,916 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-24 19:25:46,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-24 19:25:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:47,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:47,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:47,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860831413] [2024-10-24 19:25:47,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860831413] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:47,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:25:47,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:25:47,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971621281] [2024-10-24 19:25:47,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:47,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:25:47,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:25:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:25:47,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 67 [2024-10-24 19:25:47,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 307 flow. Second operand has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:47,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:47,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 67 [2024-10-24 19:25:47,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:53,650 INFO L124 PetriNetUnfolderBase]: 15342/23681 cut-off events. [2024-10-24 19:25:53,650 INFO L125 PetriNetUnfolderBase]: For 2159/2159 co-relation queries the response was YES. [2024-10-24 19:25:53,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48194 conditions, 23681 events. 15342/23681 cut-off events. For 2159/2159 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 182905 event pairs, 12826 based on Foata normal form. 0/18535 useless extension candidates. Maximal degree in co-relation 44340. Up to 7748 conditions per place. [2024-10-24 19:25:53,842 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 116 selfloop transitions, 46 changer transitions 0/177 dead transitions. [2024-10-24 19:25:53,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 177 transitions, 988 flow [2024-10-24 19:25:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 19:25:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 19:25:53,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 414 transitions. [2024-10-24 19:25:53,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44136460554371004 [2024-10-24 19:25:53,845 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 307 flow. Second operand 14 states and 414 transitions. [2024-10-24 19:25:53,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 177 transitions, 988 flow [2024-10-24 19:25:53,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 177 transitions, 945 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:25:53,850 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 590 flow [2024-10-24 19:25:53,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=590, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2024-10-24 19:25:53,851 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 23 predicate places. [2024-10-24 19:25:53,851 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 590 flow [2024-10-24 19:25:53,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:53,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:53,851 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:25:53,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-24 19:25:54,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:54,053 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:25:54,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 267644110, now seen corresponding path program 2 times [2024-10-24 19:25:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158609968] [2024-10-24 19:25:54,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:25:54,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:54,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:54,055 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:54,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-24 19:25:54,141 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:25:54,142 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:25:54,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:25:54,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:54,159 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 [2024-10-24 19:25:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:54,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:54,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158609968] [2024-10-24 19:25:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158609968] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:54,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:25:54,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:25:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370371833] [2024-10-24 19:25:54,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:54,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:25:54,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:54,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:25:54,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:25:55,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-24 19:25:55,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 590 flow. Second operand has 14 states, 14 states have (on average 23.571428571428573) internal successors, (330), 14 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:55,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:55,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-24 19:25:55,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:58,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:25:59,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:05,481 INFO L124 PetriNetUnfolderBase]: 15372/24167 cut-off events. [2024-10-24 19:26:05,481 INFO L125 PetriNetUnfolderBase]: For 7050/7050 co-relation queries the response was YES. [2024-10-24 19:26:05,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50668 conditions, 24167 events. 15372/24167 cut-off events. For 7050/7050 co-relation queries the response was YES. Maximal size of possible extension queue 1410. Compared 191587 event pairs, 12826 based on Foata normal form. 30/19873 useless extension candidates. Maximal degree in co-relation 50478. Up to 20529 conditions per place. [2024-10-24 19:26:05,647 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 44 selfloop transitions, 107 changer transitions 0/166 dead transitions. [2024-10-24 19:26:05,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 1354 flow [2024-10-24 19:26:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:26:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:26:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 597 transitions. [2024-10-24 19:26:05,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050203527815468 [2024-10-24 19:26:05,653 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 590 flow. Second operand 22 states and 597 transitions. [2024-10-24 19:26:05,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 1354 flow [2024-10-24 19:26:05,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 1351 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:26:05,670 INFO L231 Difference]: Finished difference. Result has 118 places, 166 transitions, 1353 flow [2024-10-24 19:26:05,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1353, PETRI_PLACES=118, PETRI_TRANSITIONS=166} [2024-10-24 19:26:05,670 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 49 predicate places. [2024-10-24 19:26:05,671 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 166 transitions, 1353 flow [2024-10-24 19:26:05,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.571428571428573) internal successors, (330), 14 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:05,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:05,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:05,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-24 19:26:05,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:05,872 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:26:05,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:05,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1679132477, now seen corresponding path program 1 times [2024-10-24 19:26:05,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:05,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971112727] [2024-10-24 19:26:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:26:05,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:05,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:05,874 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:05,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-24 19:26:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:26:05,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 19:26:05,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:26:05,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:26:05,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:05,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971112727] [2024-10-24 19:26:05,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971112727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:26:05,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:26:05,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:26:05,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471332593] [2024-10-24 19:26:05,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:26:05,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:26:05,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:05,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:26:05,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:26:05,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-10-24 19:26:05,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 166 transitions, 1353 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:05,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:05,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-10-24 19:26:05,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:07,884 INFO L124 PetriNetUnfolderBase]: 18029/27113 cut-off events. [2024-10-24 19:26:07,885 INFO L125 PetriNetUnfolderBase]: For 6597/6597 co-relation queries the response was YES. [2024-10-24 19:26:07,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57261 conditions, 27113 events. 18029/27113 cut-off events. For 6597/6597 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 194714 event pairs, 6774 based on Foata normal form. 476/22443 useless extension candidates. Maximal degree in co-relation 57029. Up to 15678 conditions per place. [2024-10-24 19:26:08,062 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 172 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-10-24 19:26:08,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 191 transitions, 1773 flow [2024-10-24 19:26:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:26:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:26:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-10-24 19:26:08,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6915422885572139 [2024-10-24 19:26:08,064 INFO L175 Difference]: Start difference. First operand has 118 places, 166 transitions, 1353 flow. Second operand 3 states and 139 transitions. [2024-10-24 19:26:08,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 191 transitions, 1773 flow [2024-10-24 19:26:08,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 191 transitions, 1493 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-10-24 19:26:08,080 INFO L231 Difference]: Finished difference. Result has 112 places, 167 transitions, 1089 flow [2024-10-24 19:26:08,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1089, PETRI_PLACES=112, PETRI_TRANSITIONS=167} [2024-10-24 19:26:08,081 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 43 predicate places. [2024-10-24 19:26:08,081 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 167 transitions, 1089 flow [2024-10-24 19:26:08,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:08,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:08,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:08,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-24 19:26:08,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:08,282 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:26:08,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash 39089822, now seen corresponding path program 1 times [2024-10-24 19:26:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:08,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810646372] [2024-10-24 19:26:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:26:08,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:08,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:08,291 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:08,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-24 19:26:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:26:08,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 19:26:08,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:26:08,371 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:26:08,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:08,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810646372] [2024-10-24 19:26:08,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810646372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:26:08,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:26:08,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:26:08,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140048630] [2024-10-24 19:26:08,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:26:08,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:26:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:08,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:26:08,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:26:08,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-10-24 19:26:08,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 167 transitions, 1089 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:08,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:08,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-10-24 19:26:08,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:10,727 INFO L124 PetriNetUnfolderBase]: 17066/26303 cut-off events. [2024-10-24 19:26:10,727 INFO L125 PetriNetUnfolderBase]: For 7993/7993 co-relation queries the response was YES. [2024-10-24 19:26:10,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58833 conditions, 26303 events. 17066/26303 cut-off events. For 7993/7993 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 185581 event pairs, 6372 based on Foata normal form. 330/23416 useless extension candidates. Maximal degree in co-relation 58630. Up to 19281 conditions per place. [2024-10-24 19:26:11,092 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 169 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2024-10-24 19:26:11,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 188 transitions, 1488 flow [2024-10-24 19:26:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:26:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:26:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-10-24 19:26:11,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 19:26:11,094 INFO L175 Difference]: Start difference. First operand has 112 places, 167 transitions, 1089 flow. Second operand 3 states and 134 transitions. [2024-10-24 19:26:11,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 188 transitions, 1488 flow [2024-10-24 19:26:11,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 188 transitions, 1486 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:26:11,133 INFO L231 Difference]: Finished difference. Result has 114 places, 168 transitions, 1103 flow [2024-10-24 19:26:11,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1103, PETRI_PLACES=114, PETRI_TRANSITIONS=168} [2024-10-24 19:26:11,139 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 45 predicate places. [2024-10-24 19:26:11,142 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 168 transitions, 1103 flow [2024-10-24 19:26:11,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:11,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:11,142 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:11,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-24 19:26:11,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:11,343 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:26:11,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1607685549, now seen corresponding path program 2 times [2024-10-24 19:26:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:11,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774704583] [2024-10-24 19:26:11,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:26:11,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:11,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:11,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:11,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-24 19:26:11,412 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:26:11,413 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:26:11,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 19:26:11,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:11,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:26:11,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:26:11,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 19:26:11,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 19:26:11,578 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-24 19:26:11,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-24 19:26:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 19:26:11,640 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:26:11,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:11,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774704583] [2024-10-24 19:26:11,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774704583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:26:11,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:26:11,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:26:11,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068363312] [2024-10-24 19:26:11,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:26:11,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:26:11,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:26:11,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:26:11,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-24 19:26:11,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 168 transitions, 1103 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:11,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:11,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-24 19:26:11,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:13,263 INFO L124 PetriNetUnfolderBase]: 15057/23788 cut-off events. [2024-10-24 19:26:13,263 INFO L125 PetriNetUnfolderBase]: For 11570/11651 co-relation queries the response was YES. [2024-10-24 19:26:13,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52463 conditions, 23788 events. 15057/23788 cut-off events. For 11570/11651 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 172209 event pairs, 11743 based on Foata normal form. 552/21179 useless extension candidates. Maximal degree in co-relation 52259. Up to 20112 conditions per place. [2024-10-24 19:26:13,465 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 137 selfloop transitions, 12 changer transitions 0/166 dead transitions. [2024-10-24 19:26:13,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 166 transitions, 1383 flow [2024-10-24 19:26:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:26:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:26:13,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-10-24 19:26:13,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47388059701492535 [2024-10-24 19:26:13,467 INFO L175 Difference]: Start difference. First operand has 114 places, 168 transitions, 1103 flow. Second operand 4 states and 127 transitions. [2024-10-24 19:26:13,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 166 transitions, 1383 flow [2024-10-24 19:26:13,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 166 transitions, 1356 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-24 19:26:13,480 INFO L231 Difference]: Finished difference. Result has 113 places, 166 transitions, 1082 flow [2024-10-24 19:26:13,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1082, PETRI_PLACES=113, PETRI_TRANSITIONS=166} [2024-10-24 19:26:13,481 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 44 predicate places. [2024-10-24 19:26:13,481 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 166 transitions, 1082 flow [2024-10-24 19:26:13,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:13,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:13,481 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:13,487 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 [2024-10-24 19:26:13,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:13,682 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:26:13,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash -488946174, now seen corresponding path program 1 times [2024-10-24 19:26:13,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:13,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821103928] [2024-10-24 19:26:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:26:13,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:13,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:13,685 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:13,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-24 19:26:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:26:13,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:26:13,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:13,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:26:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:26:13,800 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:26:13,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821103928] [2024-10-24 19:26:13,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821103928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:26:13,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:26:13,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:26:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452262123] [2024-10-24 19:26:13,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:26:13,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:26:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:13,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:26:13,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:26:13,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-24 19:26:13,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 166 transitions, 1082 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:13,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:13,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-24 19:26:13,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:15,342 INFO L124 PetriNetUnfolderBase]: 11475/18904 cut-off events. [2024-10-24 19:26:15,342 INFO L125 PetriNetUnfolderBase]: For 3072/3138 co-relation queries the response was YES. [2024-10-24 19:26:15,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39373 conditions, 18904 events. 11475/18904 cut-off events. For 3072/3138 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 140465 event pairs, 9115 based on Foata normal form. 0/17510 useless extension candidates. Maximal degree in co-relation 39179. Up to 15363 conditions per place. [2024-10-24 19:26:15,436 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 131 selfloop transitions, 16 changer transitions 0/164 dead transitions. [2024-10-24 19:26:15,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 164 transitions, 1370 flow [2024-10-24 19:26:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:26:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:26:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-10-24 19:26:15,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4664179104477612 [2024-10-24 19:26:15,437 INFO L175 Difference]: Start difference. First operand has 113 places, 166 transitions, 1082 flow. Second operand 4 states and 125 transitions. [2024-10-24 19:26:15,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 164 transitions, 1370 flow [2024-10-24 19:26:15,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 1357 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:26:15,445 INFO L231 Difference]: Finished difference. Result has 112 places, 164 transitions, 1095 flow [2024-10-24 19:26:15,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1095, PETRI_PLACES=112, PETRI_TRANSITIONS=164} [2024-10-24 19:26:15,445 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 43 predicate places. [2024-10-24 19:26:15,446 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 164 transitions, 1095 flow [2024-10-24 19:26:15,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:15,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:15,446 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:15,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-24 19:26:15,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:15,647 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:26:15,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:15,647 INFO L85 PathProgramCache]: Analyzing trace with hash -488946173, now seen corresponding path program 1 times [2024-10-24 19:26:15,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:15,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992763976] [2024-10-24 19:26:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:26:15,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:15,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:15,650 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:15,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-24 19:26:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:26:15,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:26:15,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:26:15,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:26:15,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:15,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992763976] [2024-10-24 19:26:15,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992763976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:26:15,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:26:15,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:26:15,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170617896] [2024-10-24 19:26:15,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:26:15,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:26:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:26:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:26:15,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-10-24 19:26:15,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 164 transitions, 1095 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:15,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:15,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-10-24 19:26:15,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:18,177 INFO L124 PetriNetUnfolderBase]: 16477/27533 cut-off events. [2024-10-24 19:26:18,178 INFO L125 PetriNetUnfolderBase]: For 4390/4417 co-relation queries the response was YES. [2024-10-24 19:26:18,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56284 conditions, 27533 events. 16477/27533 cut-off events. For 4390/4417 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 221140 event pairs, 13625 based on Foata normal form. 516/26141 useless extension candidates. Maximal degree in co-relation 56078. Up to 15467 conditions per place. [2024-10-24 19:26:18,294 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 154 selfloop transitions, 18 changer transitions 0/189 dead transitions. [2024-10-24 19:26:18,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 189 transitions, 1505 flow [2024-10-24 19:26:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:26:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:26:18,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-10-24 19:26:18,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5970149253731343 [2024-10-24 19:26:18,296 INFO L175 Difference]: Start difference. First operand has 112 places, 164 transitions, 1095 flow. Second operand 4 states and 160 transitions. [2024-10-24 19:26:18,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 189 transitions, 1505 flow [2024-10-24 19:26:18,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 189 transitions, 1488 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:26:18,304 INFO L231 Difference]: Finished difference. Result has 114 places, 164 transitions, 1121 flow [2024-10-24 19:26:18,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1121, PETRI_PLACES=114, PETRI_TRANSITIONS=164} [2024-10-24 19:26:18,306 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 45 predicate places. [2024-10-24 19:26:18,306 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 164 transitions, 1121 flow [2024-10-24 19:26:18,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:18,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:18,307 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] [2024-10-24 19:26:18,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-24 19:26:18,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:18,507 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:26:18,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2084893930, now seen corresponding path program 1 times [2024-10-24 19:26:18,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:18,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721076959] [2024-10-24 19:26:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:26:18,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:18,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:18,511 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:18,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-24 19:26:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:26:18,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 19:26:18,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:18,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:26:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:26:18,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:26:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:26:19,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:19,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721076959] [2024-10-24 19:26:19,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721076959] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:26:19,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:26:19,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-24 19:26:19,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985768625] [2024-10-24 19:26:19,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:26:19,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:26:19,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:19,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:26:19,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:26:19,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-24 19:26:19,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 164 transitions, 1121 flow. Second operand has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:19,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:19,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-24 19:26:19,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:25,898 INFO L124 PetriNetUnfolderBase]: 33387/56779 cut-off events. [2024-10-24 19:26:25,898 INFO L125 PetriNetUnfolderBase]: For 11359/11416 co-relation queries the response was YES. [2024-10-24 19:26:26,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116118 conditions, 56779 events. 33387/56779 cut-off events. For 11359/11416 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 508581 event pairs, 27451 based on Foata normal form. 1188/54923 useless extension candidates. Maximal degree in co-relation 115905. Up to 15392 conditions per place. [2024-10-24 19:26:26,425 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 134 selfloop transitions, 96 changer transitions 0/245 dead transitions. [2024-10-24 19:26:26,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 245 transitions, 1807 flow [2024-10-24 19:26:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:26:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:26:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 326 transitions. [2024-10-24 19:26:26,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5406301824212272 [2024-10-24 19:26:26,428 INFO L175 Difference]: Start difference. First operand has 114 places, 164 transitions, 1121 flow. Second operand 9 states and 326 transitions. [2024-10-24 19:26:26,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 245 transitions, 1807 flow [2024-10-24 19:26:26,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 245 transitions, 1792 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:26:26,448 INFO L231 Difference]: Finished difference. Result has 123 places, 164 transitions, 1311 flow [2024-10-24 19:26:26,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=123, PETRI_TRANSITIONS=164} [2024-10-24 19:26:26,449 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 54 predicate places. [2024-10-24 19:26:26,449 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 164 transitions, 1311 flow [2024-10-24 19:26:26,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:26,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:26,450 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-24 19:26:26,454 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 [2024-10-24 19:26:26,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:26,652 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-24 19:26:26,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1751373180, now seen corresponding path program 3 times [2024-10-24 19:26:26,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:26,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767212737] [2024-10-24 19:26:26,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:26:26,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:26,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:26,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:26,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-24 19:26:26,821 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-24 19:26:26,822 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:26:26,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 19:26:26,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:26,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:26:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:26:27,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:26:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:26:29,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767212737] [2024-10-24 19:26:29,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767212737] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:26:29,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:26:29,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-24 19:26:29,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242257598] [2024-10-24 19:26:29,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:26:29,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 19:26:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 19:26:29,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-24 19:26:29,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-24 19:26:29,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 164 transitions, 1311 flow. Second operand has 26 states, 26 states have (on average 23.76923076923077) internal successors, (618), 26 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:29,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:29,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-24 19:26:29,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:38,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:39,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:41,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:43,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:45,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:47,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:49,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:51,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:55,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:56,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:57,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:26:59,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:27:00,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:27:02,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:27:07,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:27:09,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:27:11,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []