./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-bad-counter-queue.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-bad-counter-queue.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 ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:19:41,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:19:41,847 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:19:41,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:19:41,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:19:41,884 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:19:41,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:19:41,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:19:41,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:19:41,887 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:19:41,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:19:41,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:19:41,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:19:41,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:19:41,892 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:19:41,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:19:41,893 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:19:41,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:19:41,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:19:41,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:19:41,894 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:19:41,894 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:19:41,894 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:19:41,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:19:41,895 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:19:41,895 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:19:41,895 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:19:41,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:19:41,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:19:41,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:19:41,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:19:41,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:19:41,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:19:41,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:19:41,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:19:41,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:19:41,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:19:41,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:19:41,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:19:41,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:19:41,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:19:41,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:19:41,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 [2024-10-24 19:19:42,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:19:42,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:19:42,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:19:42,232 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:19:42,232 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:19:42,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-24 19:19:43,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:19:43,869 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:19:43,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-24 19:19:43,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d085f9685/f433f17648184c49b8673919877b4d8f/FLAG5f77e1aba [2024-10-24 19:19:44,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d085f9685/f433f17648184c49b8673919877b4d8f [2024-10-24 19:19:44,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:19:44,241 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:19:44,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:19:44,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:19:44,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:19:44,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:19:44" (1/1) ... [2024-10-24 19:19:44,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5240ce7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:44, skipping insertion in model container [2024-10-24 19:19:44,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:19:44" (1/1) ... [2024-10-24 19:19:44,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:19:44,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:19:44,531 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 19:19:44,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c407302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:44, skipping insertion in model container [2024-10-24 19:19:44,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:19:44,540 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:19:44,545 INFO L158 Benchmark]: Toolchain (without parser) took 299.84ms. Allocated memory is still 182.5MB. Free memory was 142.8MB in the beginning and 131.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 19:19:44,545 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:19:44,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.74ms. Allocated memory is still 182.5MB. Free memory was 142.8MB in the beginning and 131.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 19:19:44,548 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.74ms. Allocated memory is still 182.5MB. Free memory was 142.8MB in the beginning and 131.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 96]: 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-bad-counter-queue.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 ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:19:46,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:19:46,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:19:46,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:19:46,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:19:46,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:19:46,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:19:46,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:19:46,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:19:46,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:19:46,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:19:46,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:19:46,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:19:46,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:19:46,737 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:19:46,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:19:46,739 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:19:46,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:19:46,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:19:46,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:19:46,741 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:19:46,741 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:19:46,741 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:19:46,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:19:46,742 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:19:46,742 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:19:46,743 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:19:46,743 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:19:46,743 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:19:46,744 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:19:46,744 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:19:46,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:19:46,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:19:46,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:19:46,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:19:46,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:19:46,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:19:46,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:19:46,746 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:19:46,746 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:19:46,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:19:46,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:19:46,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:19:46,747 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:19:46,748 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:19:46,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 [2024-10-24 19:19:47,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:19:47,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:19:47,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:19:47,097 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:19:47,098 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:19:47,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-24 19:19:48,530 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:19:48,722 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:19:48,723 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-24 19:19:48,731 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307111db7/7809bb030ee94dabbeed2912184dc782/FLAG3ec478ebb [2024-10-24 19:19:48,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307111db7/7809bb030ee94dabbeed2912184dc782 [2024-10-24 19:19:48,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:19:48,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:19:48,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:19:48,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:19:48,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:19:48,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:19:48" (1/1) ... [2024-10-24 19:19:48,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7249f246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:48, skipping insertion in model container [2024-10-24 19:19:48,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:19:48" (1/1) ... [2024-10-24 19:19:48,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:19:49,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:19:49,054 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:19:49,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:19:49,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:19:49,093 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:19:49,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:19:49,144 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:19:49,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49 WrapperNode [2024-10-24 19:19:49,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:19:49,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:19:49,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:19:49,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:19:49,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,193 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 138 [2024-10-24 19:19:49,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:19:49,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:19:49,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:19:49,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:19:49,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,218 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,238 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-24 19:19:49,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:19:49,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:19:49,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:19:49,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:19:49,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (1/1) ... [2024-10-24 19:19:49,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:19:49,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:19:49,302 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 19:19:49,308 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 19:19:49,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:19:49,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:19:49,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:19:49,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:19:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:19:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:19:49,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:19:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:19:49,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:19:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:19:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:19:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:19:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:19:49,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:19:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:19:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:19:49,359 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 19:19:49,499 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:19:49,501 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:19:49,877 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:19:49,877 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:19:50,186 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:19:50,187 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 19:19:50,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:19:50 BoogieIcfgContainer [2024-10-24 19:19:50,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:19:50,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:19:50,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:19:50,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:19:50,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:19:48" (1/3) ... [2024-10-24 19:19:50,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b31ccdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:19:50, skipping insertion in model container [2024-10-24 19:19:50,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:19:49" (2/3) ... [2024-10-24 19:19:50,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b31ccdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:19:50, skipping insertion in model container [2024-10-24 19:19:50,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:19:50" (3/3) ... [2024-10-24 19:19:50,195 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-10-24 19:19:50,210 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:19:50,211 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-24 19:19:50,211 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:19:50,267 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:19:50,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 35 transitions, 84 flow [2024-10-24 19:19:50,323 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2024-10-24 19:19:50,324 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:19:50,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 3/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 57 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-10-24 19:19:50,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 35 transitions, 84 flow [2024-10-24 19:19:50,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 76 flow [2024-10-24 19:19:50,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:19:50,352 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;@6af14240, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:19:50,352 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-24 19:19:50,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:19:50,357 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:19:50,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:19:50,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:19:50,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:19:50,358 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:19:50,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:19:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash 453942, now seen corresponding path program 1 times [2024-10-24 19:19:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:19:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542983703] [2024-10-24 19:19:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:19:50,384 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 19:19:50,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:19:50,386 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 19:19:50,387 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 19:19:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:19:50,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:19:50,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:19:50,538 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 19:19:50,558 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 19:19:50,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:19:50,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:19:50,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542983703] [2024-10-24 19:19:50,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542983703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:19:50,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:19:50,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:19:50,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180892907] [2024-10-24 19:19:50,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:19:50,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:19:50,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:19:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:19:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:19:50,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:19:50,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 19:19:50,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:19:50,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:19:50,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:19:50,780 INFO L124 PetriNetUnfolderBase]: 128/253 cut-off events. [2024-10-24 19:19:50,781 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-24 19:19:50,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 253 events. 128/253 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1094 event pairs, 100 based on Foata normal form. 1/196 useless extension candidates. Maximal degree in co-relation 448. Up to 221 conditions per place. [2024-10-24 19:19:50,785 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 21 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-10-24 19:19:50,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 116 flow [2024-10-24 19:19:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:19:50,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:19:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-24 19:19:50,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-10-24 19:19:50,800 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 3 states and 52 transitions. [2024-10-24 19:19:50,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 116 flow [2024-10-24 19:19:50,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:19:50,807 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-10-24 19:19:50,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-10-24 19:19:50,812 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-10-24 19:19:50,812 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-10-24 19:19:50,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 19:19:50,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:19:50,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:19:50,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 19:19:51,013 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 19:19:51,014 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:19:51,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:19:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash 453943, now seen corresponding path program 1 times [2024-10-24 19:19:51,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:19:51,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794442008] [2024-10-24 19:19:51,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:19:51,016 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 19:19:51,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:19:51,018 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 19:19:51,019 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 19:19:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:19:51,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:19:51,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:19:51,094 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 19:19:51,193 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 19:19:51,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:19:51,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:19:51,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794442008] [2024-10-24 19:19:51,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794442008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:19:51,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:19:51,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:19:51,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334649084] [2024-10-24 19:19:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:19:51,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:19:51,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:19:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:19:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:19:51,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:19:51,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 19:19:51,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:19:51,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:19:51,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:19:51,429 INFO L124 PetriNetUnfolderBase]: 129/256 cut-off events. [2024-10-24 19:19:51,429 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-24 19:19:51,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 256 events. 129/256 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1126 event pairs, 100 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 474. Up to 226 conditions per place. [2024-10-24 19:19:51,432 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 23 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-10-24 19:19:51,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 128 flow [2024-10-24 19:19:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:19:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:19:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-24 19:19:51,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-10-24 19:19:51,453 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 4 states and 64 transitions. [2024-10-24 19:19:51,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 128 flow [2024-10-24 19:19:51,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:19:51,456 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2024-10-24 19:19:51,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-10-24 19:19:51,458 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-10-24 19:19:51,458 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2024-10-24 19:19:51,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 19:19:51,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:19:51,459 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:19:51,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-24 19:19:51,660 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 19:19:51,660 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:19:51,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:19:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash 436253028, now seen corresponding path program 1 times [2024-10-24 19:19:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:19:51,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025042552] [2024-10-24 19:19:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:19:51,662 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 19:19:51,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:19:51,665 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 19:19:51,667 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 19:19:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:19:51,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:19:51,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:19:51,740 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 19:19:51,911 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 19:19:51,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:19:52,196 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 19:19:52,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:19:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025042552] [2024-10-24 19:19:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025042552] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:19:52,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:19:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:19:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321815772] [2024-10-24 19:19:52,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:19:52,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:19:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:19:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:19:52,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:19:52,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:19:52,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 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 19:19:52,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:19:52,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:19:52,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:19:52,793 INFO L124 PetriNetUnfolderBase]: 132/265 cut-off events. [2024-10-24 19:19:52,794 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-24 19:19:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 265 events. 132/265 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1181 event pairs, 100 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 481. Up to 229 conditions per place. [2024-10-24 19:19:52,797 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 23 selfloop transitions, 13 changer transitions 0/41 dead transitions. [2024-10-24 19:19:52,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 197 flow [2024-10-24 19:19:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:19:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:19:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-10-24 19:19:52,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36857142857142855 [2024-10-24 19:19:52,802 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 10 states and 129 transitions. [2024-10-24 19:19:52,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 197 flow [2024-10-24 19:19:52,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:19:52,806 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 166 flow [2024-10-24 19:19:52,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-10-24 19:19:52,807 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2024-10-24 19:19:52,807 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 166 flow [2024-10-24 19:19:52,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 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 19:19:52,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:19:52,808 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:19:52,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-24 19:19:53,012 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 19:19:53,013 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:19:53,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:19:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 640967830, now seen corresponding path program 1 times [2024-10-24 19:19:53,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:19:53,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663348600] [2024-10-24 19:19:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:19:53,014 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 19:19:53,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:19:53,017 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 19:19:53,018 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 19:19:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:19:53,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:19:53,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:19:53,079 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 19:19:53,100 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 19:19:53,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:19:53,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:19:53,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663348600] [2024-10-24 19:19:53,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663348600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:19:53,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:19:53,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:19:53,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126078269] [2024-10-24 19:19:53,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:19:53,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:19:53,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:19:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:19:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:19:53,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:19:53,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 19:19:53,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:19:53,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:19:53,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:19:53,216 INFO L124 PetriNetUnfolderBase]: 96/200 cut-off events. [2024-10-24 19:19:53,216 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-24 19:19:53,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 200 events. 96/200 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 791 event pairs, 68 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 394. Up to 163 conditions per place. [2024-10-24 19:19:53,218 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 27 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-10-24 19:19:53,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 228 flow [2024-10-24 19:19:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:19:53,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:19:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-10-24 19:19:53,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-10-24 19:19:53,220 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 166 flow. Second operand 4 states and 59 transitions. [2024-10-24 19:19:53,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 228 flow [2024-10-24 19:19:53,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 198 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-24 19:19:53,222 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 144 flow [2024-10-24 19:19:53,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-10-24 19:19:53,223 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2024-10-24 19:19:53,223 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 144 flow [2024-10-24 19:19:53,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 19:19:53,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:19:53,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:19:53,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-24 19:19:53,424 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 19:19:53,425 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:19:53,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:19:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash 640967831, now seen corresponding path program 1 times [2024-10-24 19:19:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:19:53,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407168746] [2024-10-24 19:19:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:19:53,426 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 19:19:53,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:19:53,429 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 19:19:53,430 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 19:19:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:19:53,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:19:53,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:19:53,500 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 19:19:53,630 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 19:19:53,631 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:19:53,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:19:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407168746] [2024-10-24 19:19:53,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407168746] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:19:53,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:19:53,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:19:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896183418] [2024-10-24 19:19:53,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:19:53,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:19:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:19:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:19:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:19:53,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:19:53,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 19:19:53,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:19:53,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:19:53,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:19:53,972 INFO L124 PetriNetUnfolderBase]: 188/364 cut-off events. [2024-10-24 19:19:53,973 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-24 19:19:53,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 364 events. 188/364 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1556 event pairs, 83 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 704. Up to 204 conditions per place. [2024-10-24 19:19:53,975 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 44 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-10-24 19:19:53,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 298 flow [2024-10-24 19:19:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:19:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:19:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-10-24 19:19:53,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-24 19:19:53,980 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 144 flow. Second operand 6 states and 99 transitions. [2024-10-24 19:19:53,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 298 flow [2024-10-24 19:19:53,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:19:53,983 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 186 flow [2024-10-24 19:19:53,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-10-24 19:19:53,984 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2024-10-24 19:19:53,984 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 186 flow [2024-10-24 19:19:53,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 19:19:53,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:19:53,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:19:53,989 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 (6)] Forceful destruction successful, exit code 0 [2024-10-24 19:19:54,185 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 19:19:54,186 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:19:54,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:19:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1766245300, now seen corresponding path program 1 times [2024-10-24 19:19:54,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:19:54,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466606190] [2024-10-24 19:19:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:19:54,187 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 19:19:54,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:19:54,188 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 19:19:54,189 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 19:19:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:19:54,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:19:54,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:19:54,250 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 19:19:54,396 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 19:19:54,396 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:19:54,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:19:54,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466606190] [2024-10-24 19:19:54,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466606190] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:19:54,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:19:54,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:19:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451216516] [2024-10-24 19:19:54,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:19:54,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:19:54,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:19:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:19:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:19:54,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:19:54,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 19:19:54,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:19:54,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:19:54,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:19:54,755 INFO L124 PetriNetUnfolderBase]: 299/546 cut-off events. [2024-10-24 19:19:54,756 INFO L125 PetriNetUnfolderBase]: For 224/254 co-relation queries the response was YES. [2024-10-24 19:19:54,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 546 events. 299/546 cut-off events. For 224/254 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2376 event pairs, 132 based on Foata normal form. 31/530 useless extension candidates. Maximal degree in co-relation 1313. Up to 325 conditions per place. [2024-10-24 19:19:54,760 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 50 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2024-10-24 19:19:54,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 398 flow [2024-10-24 19:19:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:19:54,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:19:54,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-10-24 19:19:54,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-10-24 19:19:54,762 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 186 flow. Second operand 6 states and 97 transitions. [2024-10-24 19:19:54,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 398 flow [2024-10-24 19:19:54,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 377 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:19:54,769 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 220 flow [2024-10-24 19:19:54,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-10-24 19:19:54,770 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-10-24 19:19:54,770 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 220 flow [2024-10-24 19:19:54,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 19:19:54,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:19:54,770 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:19:54,775 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 19:19:54,971 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 19:19:54,971 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:19:54,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:19:54,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1988993276, now seen corresponding path program 1 times [2024-10-24 19:19:54,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:19:54,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107293631] [2024-10-24 19:19:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:19:54,972 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 19:19:54,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:19:54,974 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 19:19:54,975 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 19:19:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:19:55,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 19:19:55,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:19:55,039 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 19:19:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:19:55,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:19:55,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:19:55,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107293631] [2024-10-24 19:19:55,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107293631] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:19:55,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:19:55,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:19:55,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409079907] [2024-10-24 19:19:55,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:19:55,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:19:55,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:19:55,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:19:55,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:19:55,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-10-24 19:19:55,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:19:55,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:19:55,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-10-24 19:19:55,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:19:55,457 INFO L124 PetriNetUnfolderBase]: 273/557 cut-off events. [2024-10-24 19:19:55,457 INFO L125 PetriNetUnfolderBase]: For 381/414 co-relation queries the response was YES. [2024-10-24 19:19:55,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 557 events. 273/557 cut-off events. For 381/414 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2648 event pairs, 182 based on Foata normal form. 39/578 useless extension candidates. Maximal degree in co-relation 1545. Up to 397 conditions per place. [2024-10-24 19:19:55,462 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 50 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-10-24 19:19:55,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 383 flow [2024-10-24 19:19:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:19:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:19:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-10-24 19:19:55,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-10-24 19:19:55,464 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 220 flow. Second operand 5 states and 93 transitions. [2024-10-24 19:19:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 383 flow [2024-10-24 19:19:55,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:19:55,468 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 242 flow [2024-10-24 19:19:55,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-10-24 19:19:55,469 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2024-10-24 19:19:55,469 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 242 flow [2024-10-24 19:19:55,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:19:55,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:19:55,470 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:19:55,475 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 19:19:55,672 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 19:19:55,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:19:55,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:19:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1805333099, now seen corresponding path program 2 times [2024-10-24 19:19:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:19:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254259712] [2024-10-24 19:19:55,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:19:55,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:19:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:19:55,677 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 19:19:55,680 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 19:19:55,745 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:19:55,745 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:19:55,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:19:55,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:19:55,760 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 19:19:55,993 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 19:19:55,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:19:56,457 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 19:19:56,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:19:56,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254259712] [2024-10-24 19:19:56,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254259712] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:19:56,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:19:56,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:19:56,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879827982] [2024-10-24 19:19:56,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:19:56,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:19:56,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:19:56,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:19:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:19:56,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:19:56,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 242 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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 19:19:56,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:19:56,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:19:56,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:19:58,363 INFO L124 PetriNetUnfolderBase]: 279/573 cut-off events. [2024-10-24 19:19:58,364 INFO L125 PetriNetUnfolderBase]: For 739/805 co-relation queries the response was YES. [2024-10-24 19:19:58,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 573 events. 279/573 cut-off events. For 739/805 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2699 event pairs, 191 based on Foata normal form. 32/579 useless extension candidates. Maximal degree in co-relation 1672. Up to 450 conditions per place. [2024-10-24 19:19:58,369 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 29 selfloop transitions, 31 changer transitions 0/67 dead transitions. [2024-10-24 19:19:58,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 67 transitions, 452 flow [2024-10-24 19:19:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:19:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:19:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 256 transitions. [2024-10-24 19:19:58,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33246753246753247 [2024-10-24 19:19:58,372 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 242 flow. Second operand 22 states and 256 transitions. [2024-10-24 19:19:58,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 67 transitions, 452 flow [2024-10-24 19:19:58,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:19:58,380 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 419 flow [2024-10-24 19:19:58,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=419, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-10-24 19:19:58,382 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2024-10-24 19:19:58,382 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 419 flow [2024-10-24 19:19:58,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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 19:19:58,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:19:58,383 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:19:58,388 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 19:19:58,583 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 19:19:58,583 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:19:58,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:19:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1956364241, now seen corresponding path program 1 times [2024-10-24 19:19:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:19:58,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125192170] [2024-10-24 19:19:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:19:58,585 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 19:19:58,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:19:58,586 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 19:19:58,587 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 19:19:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:19:58,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 19:19:58,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:19:58,654 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 19:19:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:19:58,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:19:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:19:59,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:19:59,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125192170] [2024-10-24 19:19:59,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125192170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:19:59,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:19:59,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:19:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129211722] [2024-10-24 19:19:59,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:19:59,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:19:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:19:59,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:19:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:19:59,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:19:59,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 419 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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 19:19:59,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:19:59,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:19:59,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:20:00,769 INFO L124 PetriNetUnfolderBase]: 638/1186 cut-off events. [2024-10-24 19:20:00,769 INFO L125 PetriNetUnfolderBase]: For 1082/1158 co-relation queries the response was YES. [2024-10-24 19:20:00,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1186 events. 638/1186 cut-off events. For 1082/1158 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5549 event pairs, 110 based on Foata normal form. 106/1279 useless extension candidates. Maximal degree in co-relation 3657. Up to 296 conditions per place. [2024-10-24 19:20:00,775 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 140 selfloop transitions, 30 changer transitions 0/176 dead transitions. [2024-10-24 19:20:00,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 176 transitions, 1226 flow [2024-10-24 19:20:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 19:20:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 19:20:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-10-24 19:20:00,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.512087912087912 [2024-10-24 19:20:00,778 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 419 flow. Second operand 13 states and 233 transitions. [2024-10-24 19:20:00,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 176 transitions, 1226 flow [2024-10-24 19:20:00,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 176 transitions, 1146 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-24 19:20:00,783 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 497 flow [2024-10-24 19:20:00,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=497, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-10-24 19:20:00,784 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2024-10-24 19:20:00,784 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 497 flow [2024-10-24 19:20:00,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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 19:20:00,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:20:00,785 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:20:00,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-10-24 19:20:00,985 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 19:20:00,985 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:20:00,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:20:00,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1453361676, now seen corresponding path program 1 times [2024-10-24 19:20:00,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:20:00,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974412198] [2024-10-24 19:20:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:20:00,986 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 19:20:00,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:20:00,988 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 19:20:00,990 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 19:20:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:20:01,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 19:20:01,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:20:01,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:20:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:20:01,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:20:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:20:01,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:20:01,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974412198] [2024-10-24 19:20:01,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974412198] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:20:01,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:20:01,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:20:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084007854] [2024-10-24 19:20:01,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:20:01,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:20:01,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:20:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:20:01,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:20:01,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:20:01,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 497 flow. Second operand has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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 19:20:01,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:20:01,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:20:01,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:20:03,630 INFO L124 PetriNetUnfolderBase]: 1144/2052 cut-off events. [2024-10-24 19:20:03,630 INFO L125 PetriNetUnfolderBase]: For 5022/5246 co-relation queries the response was YES. [2024-10-24 19:20:03,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7569 conditions, 2052 events. 1144/2052 cut-off events. For 5022/5246 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10239 event pairs, 238 based on Foata normal form. 186/2187 useless extension candidates. Maximal degree in co-relation 7515. Up to 551 conditions per place. [2024-10-24 19:20:03,680 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 195 selfloop transitions, 29 changer transitions 2/236 dead transitions. [2024-10-24 19:20:03,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 236 transitions, 2121 flow [2024-10-24 19:20:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 19:20:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 19:20:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 223 transitions. [2024-10-24 19:20:03,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4901098901098901 [2024-10-24 19:20:03,683 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 497 flow. Second operand 13 states and 223 transitions. [2024-10-24 19:20:03,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 236 transitions, 2121 flow [2024-10-24 19:20:03,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 236 transitions, 1938 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-10-24 19:20:03,698 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 620 flow [2024-10-24 19:20:03,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=620, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2024-10-24 19:20:03,699 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2024-10-24 19:20:03,699 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 620 flow [2024-10-24 19:20:03,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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 19:20:03,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:20:03,700 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:20:03,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-24 19:20:03,900 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 19:20:03,901 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:20:03,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:20:03,901 INFO L85 PathProgramCache]: Analyzing trace with hash 231571293, now seen corresponding path program 1 times [2024-10-24 19:20:03,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:20:03,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163673767] [2024-10-24 19:20:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:20:03,902 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 19:20:03,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:20:03,903 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 19:20:03,904 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 19:20:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:20:03,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 19:20:03,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:20:03,961 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 19:20:03,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:20:03,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:20:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163673767] [2024-10-24 19:20:03,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163673767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:20:03,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:20:03,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:20:03,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908822029] [2024-10-24 19:20:03,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:20:03,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:20:03,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:20:03,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:20:03,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:20:03,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-10-24 19:20:03,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 620 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 19:20:03,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:20:03,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-10-24 19:20:03,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:20:04,356 INFO L124 PetriNetUnfolderBase]: 1385/2493 cut-off events. [2024-10-24 19:20:04,356 INFO L125 PetriNetUnfolderBase]: For 6850/7020 co-relation queries the response was YES. [2024-10-24 19:20:04,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9665 conditions, 2493 events. 1385/2493 cut-off events. For 6850/7020 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12313 event pairs, 473 based on Foata normal form. 81/2530 useless extension candidates. Maximal degree in co-relation 9606. Up to 2020 conditions per place. [2024-10-24 19:20:04,376 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 83 selfloop transitions, 3 changer transitions 4/104 dead transitions. [2024-10-24 19:20:04,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 104 transitions, 885 flow [2024-10-24 19:20:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:20:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:20:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-24 19:20:04,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-10-24 19:20:04,378 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 620 flow. Second operand 3 states and 61 transitions. [2024-10-24 19:20:04,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 104 transitions, 885 flow [2024-10-24 19:20:04,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 847 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-24 19:20:04,388 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 575 flow [2024-10-24 19:20:04,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=575, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2024-10-24 19:20:04,389 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2024-10-24 19:20:04,389 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 575 flow [2024-10-24 19:20:04,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 19:20:04,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:20:04,390 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 19:20:04,393 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 19:20:04,590 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 19:20:04,590 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:20:04,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:20:04,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1252568017, now seen corresponding path program 1 times [2024-10-24 19:20:04,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:20:04,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091430242] [2024-10-24 19:20:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:20:04,591 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 19:20:04,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:20:04,592 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 19:20:04,593 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 19:20:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:20:04,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:20:04,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:20:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:20:04,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:20:04,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:20:04,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091430242] [2024-10-24 19:20:04,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091430242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:20:04,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:20:04,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:20:04,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199053790] [2024-10-24 19:20:04,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:20:04,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:20:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:20:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:20:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:20:04,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:20:04,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 19:20:04,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:20:04,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:20:04,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:20:05,275 INFO L124 PetriNetUnfolderBase]: 1371/2453 cut-off events. [2024-10-24 19:20:05,276 INFO L125 PetriNetUnfolderBase]: For 6310/6600 co-relation queries the response was YES. [2024-10-24 19:20:05,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 2453 events. 1371/2453 cut-off events. For 6310/6600 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13255 event pairs, 130 based on Foata normal form. 136/2504 useless extension candidates. Maximal degree in co-relation 9483. Up to 1282 conditions per place. [2024-10-24 19:20:05,299 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 141 selfloop transitions, 11 changer transitions 0/164 dead transitions. [2024-10-24 19:20:05,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 164 transitions, 1358 flow [2024-10-24 19:20:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:20:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:20:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-10-24 19:20:05,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-10-24 19:20:05,301 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 575 flow. Second operand 8 states and 141 transitions. [2024-10-24 19:20:05,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 164 transitions, 1358 flow [2024-10-24 19:20:05,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 164 transitions, 1327 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-10-24 19:20:05,315 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 635 flow [2024-10-24 19:20:05,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=635, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-10-24 19:20:05,316 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2024-10-24 19:20:05,317 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 635 flow [2024-10-24 19:20:05,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 19:20:05,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:20:05,318 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 19:20:05,323 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 (13)] Forceful destruction successful, exit code 0 [2024-10-24 19:20:05,518 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 19:20:05,519 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:20:05,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:20:05,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2018474661, now seen corresponding path program 2 times [2024-10-24 19:20:05,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:20:05,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248457211] [2024-10-24 19:20:05,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:20:05,520 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 19:20:05,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:20:05,523 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 19:20:05,524 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 19:20:05,586 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:20:05,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:20:05,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:20:05,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:20:05,636 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 19:20:05,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:20:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:20:05,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:20:05,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248457211] [2024-10-24 19:20:05,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248457211] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 19:20:05,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 19:20:05,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-10-24 19:20:05,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410880177] [2024-10-24 19:20:05,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:20:05,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:20:05,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:20:05,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:20:05,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:20:05,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:20:05,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 635 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 19:20:05,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:20:05,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:20:05,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:20:06,096 INFO L124 PetriNetUnfolderBase]: 1346/2456 cut-off events. [2024-10-24 19:20:06,097 INFO L125 PetriNetUnfolderBase]: For 6472/6724 co-relation queries the response was YES. [2024-10-24 19:20:06,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9597 conditions, 2456 events. 1346/2456 cut-off events. For 6472/6724 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13401 event pairs, 401 based on Foata normal form. 89/2447 useless extension candidates. Maximal degree in co-relation 9538. Up to 1288 conditions per place. [2024-10-24 19:20:06,120 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 80 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2024-10-24 19:20:06,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 107 transitions, 917 flow [2024-10-24 19:20:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:20:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:20:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-10-24 19:20:06,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-10-24 19:20:06,122 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 635 flow. Second operand 5 states and 77 transitions. [2024-10-24 19:20:06,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 107 transitions, 917 flow [2024-10-24 19:20:06,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 107 transitions, 905 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 19:20:06,135 INFO L231 Difference]: Finished difference. Result has 107 places, 92 transitions, 646 flow [2024-10-24 19:20:06,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=646, PETRI_PLACES=107, PETRI_TRANSITIONS=92} [2024-10-24 19:20:06,136 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 71 predicate places. [2024-10-24 19:20:06,136 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 646 flow [2024-10-24 19:20:06,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 19:20:06,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:20:06,137 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 19:20:06,141 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 19:20:06,337 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 19:20:06,338 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:20:06,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:20:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1760127011, now seen corresponding path program 1 times [2024-10-24 19:20:06,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:20:06,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739044778] [2024-10-24 19:20:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:20:06,339 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 19:20:06,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:20:06,340 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 19:20:06,342 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 19:20:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:20:06,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:20:06,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:20:06,450 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 19:20:06,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:20:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:20:06,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:20:06,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739044778] [2024-10-24 19:20:06,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739044778] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 19:20:06,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 19:20:06,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-10-24 19:20:06,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619056012] [2024-10-24 19:20:06,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:20:06,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:20:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:20:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:20:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:20:06,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:20:06,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 646 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 19:20:06,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:20:06,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:20:06,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:20:06,859 INFO L124 PetriNetUnfolderBase]: 1307/2412 cut-off events. [2024-10-24 19:20:06,859 INFO L125 PetriNetUnfolderBase]: For 7435/7552 co-relation queries the response was YES. [2024-10-24 19:20:06,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9893 conditions, 2412 events. 1307/2412 cut-off events. For 7435/7552 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12868 event pairs, 394 based on Foata normal form. 79/2425 useless extension candidates. Maximal degree in co-relation 9833. Up to 1239 conditions per place. [2024-10-24 19:20:06,873 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 84 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2024-10-24 19:20:06,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 963 flow [2024-10-24 19:20:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:20:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:20:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-10-24 19:20:06,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2024-10-24 19:20:06,876 INFO L175 Difference]: Start difference. First operand has 107 places, 92 transitions, 646 flow. Second operand 5 states and 78 transitions. [2024-10-24 19:20:06,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 963 flow [2024-10-24 19:20:06,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 940 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:20:06,890 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 648 flow [2024-10-24 19:20:06,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=648, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2024-10-24 19:20:06,892 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2024-10-24 19:20:06,892 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 648 flow [2024-10-24 19:20:06,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 19:20:06,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:20:06,893 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-24 19:20:06,897 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 (15)] Forceful destruction successful, exit code 0 [2024-10-24 19:20:07,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:20:07,093 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:20:07,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:20:07,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1582481593, now seen corresponding path program 3 times [2024-10-24 19:20:07,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:20:07,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158611707] [2024-10-24 19:20:07,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:20:07,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:20:07,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:20:07,096 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:20:07,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-24 19:20:07,275 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-24 19:20:07,276 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:20:07,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 19:20:07,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:20:07,291 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 19:20:07,742 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 19:20:07,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:20:09,363 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 19:20:09,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:20:09,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158611707] [2024-10-24 19:20:09,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158611707] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:20:09,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:20:09,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-24 19:20:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013294403] [2024-10-24 19:20:09,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:20:09,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 19:20:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:20:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 19:20:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-24 19:20:09,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-24 19:20:09,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 648 flow. Second operand has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 26 states have internal predecessors, (280), 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 19:20:09,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:20:09,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-24 19:20:09,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:20:22,484 INFO L124 PetriNetUnfolderBase]: 1115/2140 cut-off events. [2024-10-24 19:20:22,484 INFO L125 PetriNetUnfolderBase]: For 7503/7752 co-relation queries the response was YES. [2024-10-24 19:20:22,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8891 conditions, 2140 events. 1115/2140 cut-off events. For 7503/7752 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12001 event pairs, 757 based on Foata normal form. 83/2105 useless extension candidates. Maximal degree in co-relation 8673. Up to 1626 conditions per place. [2024-10-24 19:20:22,496 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 44 selfloop transitions, 66 changer transitions 0/127 dead transitions. [2024-10-24 19:20:22,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 127 transitions, 1096 flow [2024-10-24 19:20:22,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-24 19:20:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-24 19:20:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 513 transitions. [2024-10-24 19:20:22,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31863354037267083 [2024-10-24 19:20:22,500 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 648 flow. Second operand 46 states and 513 transitions. [2024-10-24 19:20:22,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 127 transitions, 1096 flow [2024-10-24 19:20:22,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 127 transitions, 1083 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:20:22,513 INFO L231 Difference]: Finished difference. Result has 162 places, 127 transitions, 1049 flow [2024-10-24 19:20:22,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1049, PETRI_PLACES=162, PETRI_TRANSITIONS=127} [2024-10-24 19:20:22,514 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 126 predicate places. [2024-10-24 19:20:22,514 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 127 transitions, 1049 flow [2024-10-24 19:20:22,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 26 states have internal predecessors, (280), 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 19:20:22,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:20:22,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:20:22,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-24 19:20:22,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:20:22,716 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:20:22,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:20:22,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1406635212, now seen corresponding path program 1 times [2024-10-24 19:20:22,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:20:22,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437786516] [2024-10-24 19:20:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:20:22,717 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 19:20:22,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:20:22,720 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:20:22,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-24 19:20:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:20:22,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:20:22,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:20:22,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 19:20:22,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 18 [2024-10-24 19:20:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:20:22,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:20:23,130 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-24 19:20:23,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 89 treesize of output 68 [2024-10-24 19:20:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:20:24,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:20:24,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437786516] [2024-10-24 19:20:24,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437786516] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:20:24,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:20:24,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-10-24 19:20:24,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131118991] [2024-10-24 19:20:24,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:20:24,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:20:24,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:20:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:20:24,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:20:24,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-10-24 19:20:24,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 127 transitions, 1049 flow. Second operand has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 13 states have internal predecessors, (135), 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 19:20:24,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:20:24,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-10-24 19:20:24,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:20:26,370 INFO L124 PetriNetUnfolderBase]: 2097/3780 cut-off events. [2024-10-24 19:20:26,370 INFO L125 PetriNetUnfolderBase]: For 9961/10161 co-relation queries the response was YES. [2024-10-24 19:20:26,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15457 conditions, 3780 events. 2097/3780 cut-off events. For 9961/10161 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 21533 event pairs, 601 based on Foata normal form. 97/3800 useless extension candidates. Maximal degree in co-relation 15364. Up to 2468 conditions per place. [2024-10-24 19:20:26,399 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 175 selfloop transitions, 46 changer transitions 1/236 dead transitions. [2024-10-24 19:20:26,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 236 transitions, 2202 flow [2024-10-24 19:20:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 19:20:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 19:20:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 214 transitions. [2024-10-24 19:20:26,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43673469387755104 [2024-10-24 19:20:26,402 INFO L175 Difference]: Start difference. First operand has 162 places, 127 transitions, 1049 flow. Second operand 14 states and 214 transitions. [2024-10-24 19:20:26,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 236 transitions, 2202 flow [2024-10-24 19:20:26,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 236 transitions, 2040 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-24 19:20:26,425 INFO L231 Difference]: Finished difference. Result has 159 places, 172 transitions, 1388 flow [2024-10-24 19:20:26,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1388, PETRI_PLACES=159, PETRI_TRANSITIONS=172} [2024-10-24 19:20:26,426 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 123 predicate places. [2024-10-24 19:20:26,426 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 172 transitions, 1388 flow [2024-10-24 19:20:26,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 13 states have internal predecessors, (135), 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 19:20:26,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:20:26,427 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:20:26,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-24 19:20:26,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:20:26,627 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-24 19:20:26,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:20:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1497889166, now seen corresponding path program 2 times [2024-10-24 19:20:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:20:26,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548752336] [2024-10-24 19:20:26,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:20:26,628 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 19:20:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:20:26,631 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:20:26,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-24 19:20:26,722 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:20:26,722 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-10-24 19:20:26,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 19:20:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:20:26,846 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-24 19:20:26,846 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 19:20:26,848 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (13 of 14 remaining) [2024-10-24 19:20:26,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-10-24 19:20:26,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-10-24 19:20:26,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-10-24 19:20:26,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-10-24 19:20:26,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-10-24 19:20:26,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-10-24 19:20:26,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2024-10-24 19:20:26,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-10-24 19:20:26,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-10-24 19:20:26,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-10-24 19:20:26,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-10-24 19:20:26,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-10-24 19:20:26,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-10-24 19:20:26,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-24 19:20:27,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:20:27,053 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:20:27,093 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 19:20:27,093 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 19:20:27,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:20:27 BasicIcfg [2024-10-24 19:20:27,097 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 19:20:27,098 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 19:20:27,098 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 19:20:27,098 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 19:20:27,099 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:19:50" (3/4) ... [2024-10-24 19:20:27,100 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 19:20:27,101 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 19:20:27,102 INFO L158 Benchmark]: Toolchain (without parser) took 38356.19ms. Allocated memory was 65.0MB in the beginning and 608.2MB in the end (delta: 543.2MB). Free memory was 33.5MB in the beginning and 299.5MB in the end (delta: -266.0MB). Peak memory consumption was 275.8MB. Max. memory is 16.1GB. [2024-10-24 19:20:27,102 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory is still 24.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:20:27,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.25ms. Allocated memory is still 65.0MB. Free memory was 33.4MB in the beginning and 35.7MB in the end (delta: -2.3MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-10-24 19:20:27,103 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.78ms. Allocated memory is still 65.0MB. Free memory was 35.7MB in the beginning and 33.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 19:20:27,103 INFO L158 Benchmark]: Boogie Preprocessor took 67.84ms. Allocated memory is still 65.0MB. Free memory was 33.6MB in the beginning and 31.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 19:20:27,103 INFO L158 Benchmark]: RCFGBuilder took 919.78ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 30.7MB in the beginning and 49.3MB in the end (delta: -18.6MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2024-10-24 19:20:27,104 INFO L158 Benchmark]: TraceAbstraction took 36907.42ms. Allocated memory was 86.0MB in the beginning and 608.2MB in the end (delta: 522.2MB). Free memory was 48.3MB in the beginning and 299.5MB in the end (delta: -251.2MB). Peak memory consumption was 271.0MB. Max. memory is 16.1GB. [2024-10-24 19:20:27,104 INFO L158 Benchmark]: Witness Printer took 3.54ms. Allocated memory is still 608.2MB. Free memory is still 299.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:20:27,106 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory is still 24.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.25ms. Allocated memory is still 65.0MB. Free memory was 33.4MB in the beginning and 35.7MB in the end (delta: -2.3MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.78ms. Allocated memory is still 65.0MB. Free memory was 35.7MB in the beginning and 33.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.84ms. Allocated memory is still 65.0MB. Free memory was 33.6MB in the beginning and 31.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 919.78ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 30.7MB in the beginning and 49.3MB in the end (delta: -18.6MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * TraceAbstraction took 36907.42ms. Allocated memory was 86.0MB in the beginning and 608.2MB in the end (delta: 522.2MB). Free memory was 48.3MB in the beginning and 299.5MB in the end (delta: -251.2MB). Peak memory consumption was 271.0MB. Max. memory is 16.1GB. * Witness Printer took 3.54ms. Allocated memory is still 608.2MB. Free memory is still 299.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L75] 0 pthread_t t1, t2; [L77] 0 N = __VERIFIER_nondet_int() [L78] CALL, EXPR 0 create_fresh_int_array(N) [L93] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L93] RET 0 assume_abort_if_not(size >= 0) [L94] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L94] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L97] 0 int i = 0; VAL [A={0:0}, N=1, \old(size)=1, arr={3:0}, counter=0, i=0, size=1] [L97] COND TRUE 0 i < size [L98] 0 arr[i] = __VERIFIER_nondet_int() [L97] 0 i++ VAL [A={0:0}, N=1, \old(size)=1, arr={3:0}, counter=0, i=1, size=1] [L97] COND FALSE 0 !(i < size) [L100] 0 return arr; [L78] RET, EXPR 0 create_fresh_int_array(N) [L78] 0 A = create_fresh_int_array(N) [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={3:0}, N=1, counter=0, t1=-1] [L82] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={3:0}, N=1, counter=0, t1=-1, t2=0] [L62] 2 int i=0; VAL [A={3:0}, N=1, \old(_argptr)={0:0}, _argptr={0:0}, counter=0, i=0] [L62] COND TRUE 2 i= b - 2147483648) [L38] COND FALSE 2 !(!cond) [L104] RET 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L105] CALL 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L38] COND FALSE 2 !(!cond) [L105] RET 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L106] 2 return a - b; [L64] RET, EXPR 2 minus(counter, A[i]) [L64] 2 int tmp = minus(counter, A[i]); [L49] 1 int i=0; VAL [A={3:0}, N=1, \old(_argptr)={0:0}, _argptr={0:0}, counter=0, i=0] [L49] COND TRUE 1 i= 0 || a >= -2147483648 - b) [L38] COND FALSE 1 !(!cond) [L110] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L111] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 1 !(!cond) [L111] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L112] 1 return a + b; [L51] RET, EXPR 1 plus(counter, A[i]) [L51] 1 int tmp = plus(counter, A[i]); [L54] 1 counter = tmp VAL [A={3:0}, N=1, \old(_argptr)={0:0}, _argptr={0:0}, counter=-1610612736, i=0, tmp=-1610612736] [L49] 1 i++ VAL [A={3:0}, N=1, \old(_argptr)={0:0}, _argptr={0:0}, counter=-1610612736, i=1] [L49] COND FALSE 1 !(i