./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-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:56:47,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:56:47,490 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:56:47,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:56:47,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:56:47,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:56:47,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:56:47,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:56:47,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:56:47,519 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:56:47,519 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:56:47,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:56:47,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:56:47,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:56:47,521 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:56:47,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:56:47,521 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:56:47,521 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:56:47,522 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:56:47,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:56:47,522 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:56:47,525 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:56:47,525 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:56:47,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:56:47,526 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:56:47,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:56:47,526 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:56:47,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:56:47,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:56:47,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:56:47,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:56:47,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:56:47,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:56:47,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:47,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:56:47,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:56:47,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:56:47,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:56:47,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:56:47,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:56:47,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:56:47,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:56:47,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-10-14 19:56:47,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:56:47,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:56:47,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:56:47,740 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:56:47,740 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:56:47,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-14 19:56:48,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:56:49,039 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:56:49,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-14 19:56:49,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff5f1439/4f3c7139c8ef44fa9252490ee4be7701/FLAG6ee5061cd [2024-10-14 19:56:49,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff5f1439/4f3c7139c8ef44fa9252490ee4be7701 [2024-10-14 19:56:49,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:56:49,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:56:49,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:49,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:56:49,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:56:49,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebd93c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49, skipping insertion in model container [2024-10-14 19:56:49,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,091 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:56:49,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:49,238 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:56:49,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57fbb9e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49, skipping insertion in model container [2024-10-14 19:56:49,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:49,239 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:56:49,240 INFO L158 Benchmark]: Toolchain (without parser) took 179.12ms. Allocated memory is still 159.4MB. Free memory was 90.7MB in the beginning and 79.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:56:49,240 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 159.4MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:56:49,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.09ms. Allocated memory is still 159.4MB. Free memory was 90.6MB in the beginning and 80.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:56:49,242 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 159.4MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.09ms. Allocated memory is still 159.4MB. Free memory was 90.6MB in the beginning and 80.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 114]: 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-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:56:50,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:56:50,855 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:56:50,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:56:50,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:56:50,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:56:50,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:56:50,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:56:50,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:56:50,892 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:56:50,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:56:50,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:56:50,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:56:50,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:56:50,894 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:56:50,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:56:50,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:56:50,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:56:50,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:56:50,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:56:50,896 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:56:50,896 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:56:50,896 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:56:50,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:56:50,896 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:56:50,897 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:56:50,897 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:56:50,897 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:56:50,897 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:56:50,897 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:56:50,897 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:56:50,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:56:50,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:56:50,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:56:50,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:56:50,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:50,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:56:50,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:56:50,899 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:56:50,899 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:56:50,900 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:56:50,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:56:50,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:56:50,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:56:50,901 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:56:50,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-10-14 19:56:51,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:56:51,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:56:51,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:56:51,172 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:56:51,172 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:56:51,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-14 19:56:52,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:56:52,592 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:56:52,593 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-14 19:56:52,599 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5f799ab1/8a83a35e5c79494ab59bdef2809b196f/FLAGb6082b98a [2024-10-14 19:56:52,612 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5f799ab1/8a83a35e5c79494ab59bdef2809b196f [2024-10-14 19:56:52,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:56:52,616 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:56:52,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:52,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:56:52,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:56:52,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67953cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52, skipping insertion in model container [2024-10-14 19:56:52,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:56:52,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:52,790 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:56:52,792 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:56:52,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:52,814 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:56:52,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:52,849 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:56:52,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52 WrapperNode [2024-10-14 19:56:52,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:52,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:56:52,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:56:52,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:56:52,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,891 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 157 [2024-10-14 19:56:52,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:56:52,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:56:52,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:56:52,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:56:52,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,921 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,936 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 19:56:52,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:56:52,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:56:52,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:56:52,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:56:52,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (1/1) ... [2024-10-14 19:56:52,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:52,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:56:52,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:56:52,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:56:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:56:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:56:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:56:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:56:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:56:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:56:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:56:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:56:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:56:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:56:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:56:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:56:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:56:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:56:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:56:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:56:53,025 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:56:53,106 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:56:53,108 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:56:53,424 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:56:53,425 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:56:53,631 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:56:53,634 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 19:56:53,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:53 BoogieIcfgContainer [2024-10-14 19:56:53,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:56:53,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:56:53,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:56:53,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:56:53,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:56:52" (1/3) ... [2024-10-14 19:56:53,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472a6ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:53, skipping insertion in model container [2024-10-14 19:56:53,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:52" (2/3) ... [2024-10-14 19:56:53,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472a6ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:53, skipping insertion in model container [2024-10-14 19:56:53,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:53" (3/3) ... [2024-10-14 19:56:53,642 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-10-14 19:56:53,654 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:56:53,655 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-14 19:56:53,655 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:56:53,694 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:56:53,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-14 19:56:53,750 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-14 19:56:53,750 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:56:53,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 79 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-14 19:56:53,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-14 19:56:53,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-10-14 19:56:53,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:56:53,768 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;@76403d4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:56:53,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-14 19:56:53,770 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:56:53,770 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:56:53,770 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:56:53,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:53,771 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:56:53,771 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:56:53,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash 504850, now seen corresponding path program 1 times [2024-10-14 19:56:53,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:53,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682744477] [2024-10-14 19:56:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:53,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:53,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:53,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:53,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:56:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:53,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:56:53,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:53,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:53,901 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:53,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:53,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682744477] [2024-10-14 19:56:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682744477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:53,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:53,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:56:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640622271] [2024-10-14 19:56:53,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:53,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:56:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:53,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:56:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:56:53,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:56:53,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 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) [2024-10-14 19:56:53,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:53,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:56:53,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:54,119 INFO L124 PetriNetUnfolderBase]: 238/446 cut-off events. [2024-10-14 19:56:54,120 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-14 19:56:54,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 446 events. 238/446 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2044 event pairs, 201 based on Foata normal form. 22/334 useless extension candidates. Maximal degree in co-relation 814. Up to 388 conditions per place. [2024-10-14 19:56:54,127 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 25 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-14 19:56:54,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 132 flow [2024-10-14 19:56:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:56:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:56:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-14 19:56:54,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-14 19:56:54,139 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 57 transitions. [2024-10-14 19:56:54,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 132 flow [2024-10-14 19:56:54,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:56:54,144 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2024-10-14 19:56:54,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-14 19:56:54,148 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-10-14 19:56:54,150 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2024-10-14 19:56:54,150 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) [2024-10-14 19:56:54,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:54,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:56:54,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:54,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:54,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:56:54,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:54,354 INFO L85 PathProgramCache]: Analyzing trace with hash 504851, now seen corresponding path program 1 times [2024-10-14 19:56:54,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:54,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846918417] [2024-10-14 19:56:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:54,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:54,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:54,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:54,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:56:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:54,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:56:54,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:54,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:54,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:54,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:54,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846918417] [2024-10-14 19:56:54,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846918417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:54,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:54,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:54,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114446471] [2024-10-14 19:56:54,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:54,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:54,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:54,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:54,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:56:54,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 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) [2024-10-14 19:56:54,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:54,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:56:54,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:54,730 INFO L124 PetriNetUnfolderBase]: 239/449 cut-off events. [2024-10-14 19:56:54,731 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:56:54,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 449 events. 239/449 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2058 event pairs, 201 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 838. Up to 393 conditions per place. [2024-10-14 19:56:54,733 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-10-14 19:56:54,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 144 flow [2024-10-14 19:56:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-14 19:56:54,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-10-14 19:56:54,738 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 4 states and 68 transitions. [2024-10-14 19:56:54,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 144 flow [2024-10-14 19:56:54,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:54,740 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 97 flow [2024-10-14 19:56:54,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-10-14 19:56:54,740 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-14 19:56:54,740 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 97 flow [2024-10-14 19:56:54,741 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) [2024-10-14 19:56:54,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:54,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:56:54,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 19:56:54,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:54,942 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:56:54,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash 485177513, now seen corresponding path program 1 times [2024-10-14 19:56:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916344173] [2024-10-14 19:56:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:54,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:54,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:54,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:54,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:56:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:54,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:56:54,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:55,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:55,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:55,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:55,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916344173] [2024-10-14 19:56:55,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916344173] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:55,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:55,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:56:55,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804719329] [2024-10-14 19:56:55,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:55,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:56:55,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:55,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:56:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:56:55,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:56:55,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 97 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) [2024-10-14 19:56:55,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:55,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:56:55,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:55,811 INFO L124 PetriNetUnfolderBase]: 242/458 cut-off events. [2024-10-14 19:56:55,811 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:56:55,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 458 events. 242/458 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2119 event pairs, 201 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 845. Up to 396 conditions per place. [2024-10-14 19:56:55,813 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2024-10-14 19:56:55,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 213 flow [2024-10-14 19:56:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:56:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:56:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-10-14 19:56:55,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3325 [2024-10-14 19:56:55,816 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 97 flow. Second operand 10 states and 133 transitions. [2024-10-14 19:56:55,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 213 flow [2024-10-14 19:56:55,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:56:55,818 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 174 flow [2024-10-14 19:56:55,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-14 19:56:55,819 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-10-14 19:56:55,820 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 174 flow [2024-10-14 19:56:55,820 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) [2024-10-14 19:56:55,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:55,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:56:55,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-14 19:56:56,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:56,022 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:56:56,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:56,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2137644518, now seen corresponding path program 1 times [2024-10-14 19:56:56,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:56,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101547023] [2024-10-14 19:56:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:56,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:56,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:56,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:56,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:56:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:56,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:56:56,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:56,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:56,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:56,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101547023] [2024-10-14 19:56:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101547023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:56,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:56,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:56,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29043434] [2024-10-14 19:56:56,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:56,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:56,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:56,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:56,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:56,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:56:56,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:56,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:56,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:56:56,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:56,246 INFO L124 PetriNetUnfolderBase]: 254/497 cut-off events. [2024-10-14 19:56:56,246 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 19:56:56,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 497 events. 254/497 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2312 event pairs, 214 based on Foata normal form. 17/387 useless extension candidates. Maximal degree in co-relation 959. Up to 400 conditions per place. [2024-10-14 19:56:56,248 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 36 selfloop transitions, 2 changer transitions 8/52 dead transitions. [2024-10-14 19:56:56,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 282 flow [2024-10-14 19:56:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-10-14 19:56:56,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-14 19:56:56,249 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 174 flow. Second operand 4 states and 86 transitions. [2024-10-14 19:56:56,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 282 flow [2024-10-14 19:56:56,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 252 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:56,254 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 162 flow [2024-10-14 19:56:56,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-14 19:56:56,255 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-10-14 19:56:56,256 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 162 flow [2024-10-14 19:56:56,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:56,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:56,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:56,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:56,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:56,457 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:56:56,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1360547268, now seen corresponding path program 1 times [2024-10-14 19:56:56,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:56,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666861260] [2024-10-14 19:56:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:56,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:56,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:56,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:56,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:56:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:56,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 19:56:56,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:56,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:56,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:57,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:57,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666861260] [2024-10-14 19:56:57,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666861260] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:57,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:57,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-14 19:56:57,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787077952] [2024-10-14 19:56:57,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:57,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 19:56:57,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:57,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 19:56:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:56:57,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:56:57,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:57,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:57,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:56:57,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:58,178 INFO L124 PetriNetUnfolderBase]: 571/1087 cut-off events. [2024-10-14 19:56:58,178 INFO L125 PetriNetUnfolderBase]: For 108/120 co-relation queries the response was YES. [2024-10-14 19:56:58,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 1087 events. 571/1087 cut-off events. For 108/120 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5800 event pairs, 473 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 2411. Up to 390 conditions per place. [2024-10-14 19:56:58,183 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 69 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-10-14 19:56:58,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 432 flow [2024-10-14 19:56:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:56:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:56:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-10-14 19:56:58,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-10-14 19:56:58,186 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 162 flow. Second operand 8 states and 156 transitions. [2024-10-14 19:56:58,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 432 flow [2024-10-14 19:56:58,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:58,188 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 193 flow [2024-10-14 19:56:58,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-10-14 19:56:58,189 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-10-14 19:56:58,189 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 193 flow [2024-10-14 19:56:58,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:58,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:58,189 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:58,194 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 [2024-10-14 19:56:58,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:58,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:56:58,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1360547267, now seen corresponding path program 1 times [2024-10-14 19:56:58,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:58,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764639851] [2024-10-14 19:56:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:58,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:58,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:58,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:58,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:56:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:58,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:56:58,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:58,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:58,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:58,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:58,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764639851] [2024-10-14 19:56:58,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764639851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:58,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:58,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:58,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462722469] [2024-10-14 19:56:58,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:58,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:58,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:58,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:58,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:58,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:56:58,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:58,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:58,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:56:58,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:58,600 INFO L124 PetriNetUnfolderBase]: 380/745 cut-off events. [2024-10-14 19:56:58,600 INFO L125 PetriNetUnfolderBase]: For 317/333 co-relation queries the response was YES. [2024-10-14 19:56:58,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700 conditions, 745 events. 380/745 cut-off events. For 317/333 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3536 event pairs, 302 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 1667. Up to 622 conditions per place. [2024-10-14 19:56:58,603 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 30 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2024-10-14 19:56:58,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 251 flow [2024-10-14 19:56:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-10-14 19:56:58,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-10-14 19:56:58,606 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 193 flow. Second operand 4 states and 63 transitions. [2024-10-14 19:56:58,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 251 flow [2024-10-14 19:56:58,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 243 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:58,610 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 183 flow [2024-10-14 19:56:58,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-10-14 19:56:58,611 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-10-14 19:56:58,612 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 183 flow [2024-10-14 19:56:58,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:58,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:58,613 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:56:58,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-14 19:56:58,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:58,815 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:56:58,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:58,816 INFO L85 PathProgramCache]: Analyzing trace with hash 718959979, now seen corresponding path program 2 times [2024-10-14 19:56:58,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:58,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126356930] [2024-10-14 19:56:58,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:58,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:58,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:58,817 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:58,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:56:58,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:56:58,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:58,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:56:58,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:58,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:59,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:59,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:59,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126356930] [2024-10-14 19:56:59,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126356930] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:59,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:59,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:56:59,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309169172] [2024-10-14 19:56:59,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:59,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:56:59,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:56:59,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:56:59,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:56:59,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 183 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) [2024-10-14 19:56:59,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:59,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:56:59,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:01,549 INFO L124 PetriNetUnfolderBase]: 386/763 cut-off events. [2024-10-14 19:57:01,549 INFO L125 PetriNetUnfolderBase]: For 356/372 co-relation queries the response was YES. [2024-10-14 19:57:01,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 763 events. 386/763 cut-off events. For 356/372 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3643 event pairs, 302 based on Foata normal form. 6/719 useless extension candidates. Maximal degree in co-relation 1670. Up to 633 conditions per place. [2024-10-14 19:57:01,554 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 24 selfloop transitions, 30 changer transitions 0/59 dead transitions. [2024-10-14 19:57:01,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 411 flow [2024-10-14 19:57:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:57:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:57:01,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 258 transitions. [2024-10-14 19:57:01,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29318181818181815 [2024-10-14 19:57:01,559 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 183 flow. Second operand 22 states and 258 transitions. [2024-10-14 19:57:01,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 411 flow [2024-10-14 19:57:01,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:57:01,562 INFO L231 Difference]: Finished difference. Result has 78 places, 59 transitions, 381 flow [2024-10-14 19:57:01,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=381, PETRI_PLACES=78, PETRI_TRANSITIONS=59} [2024-10-14 19:57:01,563 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2024-10-14 19:57:01,563 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 59 transitions, 381 flow [2024-10-14 19:57:01,564 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) [2024-10-14 19:57:01,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:01,564 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:01,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-14 19:57:01,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:01,765 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:01,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash -462962238, now seen corresponding path program 2 times [2024-10-14 19:57:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:01,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980495607] [2024-10-14 19:57:01,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:57:01,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:01,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:01,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:01,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-14 19:57:01,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:57:01,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:01,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:57:01,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:01,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 19:57:01,919 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:01,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980495607] [2024-10-14 19:57:01,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980495607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:01,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:01,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:57:01,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253461867] [2024-10-14 19:57:01,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:01,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:57:01,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:01,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:57:01,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:57:01,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:57:01,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 59 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:01,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:01,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:57:01,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:02,059 INFO L124 PetriNetUnfolderBase]: 329/661 cut-off events. [2024-10-14 19:57:02,059 INFO L125 PetriNetUnfolderBase]: For 342/358 co-relation queries the response was YES. [2024-10-14 19:57:02,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 661 events. 329/661 cut-off events. For 342/358 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3055 event pairs, 249 based on Foata normal form. 34/650 useless extension candidates. Maximal degree in co-relation 1431. Up to 532 conditions per place. [2024-10-14 19:57:02,063 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 39 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2024-10-14 19:57:02,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 56 transitions, 457 flow [2024-10-14 19:57:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:57:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:57:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-14 19:57:02,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-10-14 19:57:02,065 INFO L175 Difference]: Start difference. First operand has 78 places, 59 transitions, 381 flow. Second operand 4 states and 64 transitions. [2024-10-14 19:57:02,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 56 transitions, 457 flow [2024-10-14 19:57:02,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 376 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-10-14 19:57:02,068 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 298 flow [2024-10-14 19:57:02,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-10-14 19:57:02,070 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2024-10-14 19:57:02,070 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 298 flow [2024-10-14 19:57:02,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:02,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:02,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:02,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 19:57:02,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:02,274 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:02,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2048442773, now seen corresponding path program 1 times [2024-10-14 19:57:02,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:02,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302215134] [2024-10-14 19:57:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:02,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:02,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:02,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:02,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:57:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:02,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 19:57:02,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:02,349 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:02,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:02,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302215134] [2024-10-14 19:57:02,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302215134] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:02,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:02,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:57:02,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027723364] [2024-10-14 19:57:02,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:02,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:57:02,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:02,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:57:02,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:57:02,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-14 19:57:02,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:02,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:02,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-14 19:57:02,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:02,440 INFO L124 PetriNetUnfolderBase]: 353/712 cut-off events. [2024-10-14 19:57:02,440 INFO L125 PetriNetUnfolderBase]: For 168/180 co-relation queries the response was YES. [2024-10-14 19:57:02,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 712 events. 353/712 cut-off events. For 168/180 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3201 event pairs, 102 based on Foata normal form. 18/694 useless extension candidates. Maximal degree in co-relation 1547. Up to 475 conditions per place. [2024-10-14 19:57:02,443 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 54 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-10-14 19:57:02,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 431 flow [2024-10-14 19:57:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:57:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:57:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-10-14 19:57:02,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-10-14 19:57:02,444 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 298 flow. Second operand 3 states and 59 transitions. [2024-10-14 19:57:02,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 431 flow [2024-10-14 19:57:02,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:57:02,446 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 309 flow [2024-10-14 19:57:02,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-14 19:57:02,447 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-10-14 19:57:02,448 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 309 flow [2024-10-14 19:57:02,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:02,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:02,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:02,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:02,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:02,650 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:02,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:02,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1448876003, now seen corresponding path program 2 times [2024-10-14 19:57:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244145525] [2024-10-14 19:57:02,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:57:02,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:02,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:02,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:02,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:57:02,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:57:02,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:02,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:57:02,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:03,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:03,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:03,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244145525] [2024-10-14 19:57:03,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244145525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:03,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:03,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 19:57:03,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537269015] [2024-10-14 19:57:03,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:03,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:57:03,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:57:03,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:57:03,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:57:03,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 309 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:03,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:03,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:57:03,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:03,477 INFO L124 PetriNetUnfolderBase]: 464/922 cut-off events. [2024-10-14 19:57:03,478 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2024-10-14 19:57:03,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 922 events. 464/922 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4436 event pairs, 87 based on Foata normal form. 3/883 useless extension candidates. Maximal degree in co-relation 2285. Up to 610 conditions per place. [2024-10-14 19:57:03,482 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 61 selfloop transitions, 23 changer transitions 3/91 dead transitions. [2024-10-14 19:57:03,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 91 transitions, 573 flow [2024-10-14 19:57:03,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:57:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:57:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-10-14 19:57:03,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3340909090909091 [2024-10-14 19:57:03,483 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 309 flow. Second operand 11 states and 147 transitions. [2024-10-14 19:57:03,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 91 transitions, 573 flow [2024-10-14 19:57:03,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 91 transitions, 551 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-14 19:57:03,487 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 395 flow [2024-10-14 19:57:03,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=395, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-10-14 19:57:03,488 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-10-14 19:57:03,488 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 395 flow [2024-10-14 19:57:03,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:03,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:03,488 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:03,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-14 19:57:03,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:03,689 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:03,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash 679100977, now seen corresponding path program 3 times [2024-10-14 19:57:03,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:03,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840083831] [2024-10-14 19:57:03,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:57:03,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:03,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:03,693 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:03,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-14 19:57:03,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 19:57:03,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:03,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:57:03,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:04,090 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:04,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:04,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840083831] [2024-10-14 19:57:04,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840083831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:04,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:04,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 19:57:04,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971078523] [2024-10-14 19:57:04,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:04,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:57:04,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:04,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:57:04,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:57:04,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:57:04,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 395 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:04,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:04,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:57:04,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:04,545 INFO L124 PetriNetUnfolderBase]: 536/1105 cut-off events. [2024-10-14 19:57:04,545 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2024-10-14 19:57:04,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3106 conditions, 1105 events. 536/1105 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5771 event pairs, 129 based on Foata normal form. 3/1054 useless extension candidates. Maximal degree in co-relation 3057. Up to 760 conditions per place. [2024-10-14 19:57:04,550 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 28 changer transitions 3/99 dead transitions. [2024-10-14 19:57:04,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 713 flow [2024-10-14 19:57:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:57:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:57:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-10-14 19:57:04,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3340909090909091 [2024-10-14 19:57:04,552 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 395 flow. Second operand 11 states and 147 transitions. [2024-10-14 19:57:04,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 713 flow [2024-10-14 19:57:04,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 99 transitions, 678 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-14 19:57:04,556 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 539 flow [2024-10-14 19:57:04,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-10-14 19:57:04,556 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-10-14 19:57:04,556 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 539 flow [2024-10-14 19:57:04,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:04,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:04,557 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:04,561 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 (12)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:04,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:04,757 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:04,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:04,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1331573087, now seen corresponding path program 4 times [2024-10-14 19:57:04,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:04,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690778092] [2024-10-14 19:57:04,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:57:04,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:04,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:04,759 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:04,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-14 19:57:04,821 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:57:04,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:04,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:57:04,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:05,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:05,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690778092] [2024-10-14 19:57:05,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690778092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:05,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:05,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 19:57:05,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382327884] [2024-10-14 19:57:05,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:05,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:57:05,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:05,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:57:05,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:57:05,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:57:05,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 539 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:05,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:05,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:57:05,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:05,526 INFO L124 PetriNetUnfolderBase]: 647/1396 cut-off events. [2024-10-14 19:57:05,526 INFO L125 PetriNetUnfolderBase]: For 2254/2254 co-relation queries the response was YES. [2024-10-14 19:57:05,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4516 conditions, 1396 events. 647/1396 cut-off events. For 2254/2254 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8346 event pairs, 45 based on Foata normal form. 3/1399 useless extension candidates. Maximal degree in co-relation 4461. Up to 688 conditions per place. [2024-10-14 19:57:05,532 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 78 selfloop transitions, 35 changer transitions 5/123 dead transitions. [2024-10-14 19:57:05,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 123 transitions, 984 flow [2024-10-14 19:57:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:57:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:57:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-10-14 19:57:05,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-10-14 19:57:05,533 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 539 flow. Second operand 11 states and 167 transitions. [2024-10-14 19:57:05,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 123 transitions, 984 flow [2024-10-14 19:57:05,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 123 transitions, 951 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-10-14 19:57:05,539 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 707 flow [2024-10-14 19:57:05,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=707, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-10-14 19:57:05,541 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2024-10-14 19:57:05,541 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 707 flow [2024-10-14 19:57:05,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:05,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:05,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:05,545 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 [2024-10-14 19:57:05,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:05,742 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:05,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash 801342129, now seen corresponding path program 5 times [2024-10-14 19:57:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:05,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657746781] [2024-10-14 19:57:05,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:57:05,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:05,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:05,744 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:05,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-14 19:57:05,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:57:05,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:05,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:57:05,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:06,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:06,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:06,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657746781] [2024-10-14 19:57:06,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657746781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:06,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:06,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 19:57:06,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571723190] [2024-10-14 19:57:06,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:06,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:57:06,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:06,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:57:06,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:57:06,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:57:06,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 707 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:06,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:06,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:57:06,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:10,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:10,535 INFO L124 PetriNetUnfolderBase]: 725/1519 cut-off events. [2024-10-14 19:57:10,535 INFO L125 PetriNetUnfolderBase]: For 4180/4180 co-relation queries the response was YES. [2024-10-14 19:57:10,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 1519 events. 725/1519 cut-off events. For 4180/4180 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9025 event pairs, 141 based on Foata normal form. 3/1522 useless extension candidates. Maximal degree in co-relation 5689. Up to 1033 conditions per place. [2024-10-14 19:57:10,543 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 80 selfloop transitions, 39 changer transitions 5/128 dead transitions. [2024-10-14 19:57:10,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 128 transitions, 1122 flow [2024-10-14 19:57:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:57:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:57:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-10-14 19:57:10,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-10-14 19:57:10,544 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 707 flow. Second operand 12 states and 164 transitions. [2024-10-14 19:57:10,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 128 transitions, 1122 flow [2024-10-14 19:57:10,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 128 transitions, 1072 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-10-14 19:57:10,552 INFO L231 Difference]: Finished difference. Result has 119 places, 100 transitions, 838 flow [2024-10-14 19:57:10,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=838, PETRI_PLACES=119, PETRI_TRANSITIONS=100} [2024-10-14 19:57:10,553 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2024-10-14 19:57:10,553 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 838 flow [2024-10-14 19:57:10,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:10,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:10,554 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:10,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-14 19:57:10,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:10,754 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:10,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:10,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1282154521, now seen corresponding path program 6 times [2024-10-14 19:57:10,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:10,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502706017] [2024-10-14 19:57:10,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:57:10,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:10,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:10,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:10,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-14 19:57:10,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-14 19:57:10,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:10,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:57:10,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:11,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:11,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:11,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502706017] [2024-10-14 19:57:11,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502706017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:11,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:11,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 19:57:11,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110740934] [2024-10-14 19:57:11,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:11,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:57:11,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:11,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:57:11,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:57:11,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:57:11,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 838 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:11,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:11,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:57:11,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:11,658 INFO L124 PetriNetUnfolderBase]: 761/1621 cut-off events. [2024-10-14 19:57:11,658 INFO L125 PetriNetUnfolderBase]: For 6082/6082 co-relation queries the response was YES. [2024-10-14 19:57:11,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6525 conditions, 1621 events. 761/1621 cut-off events. For 6082/6082 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9980 event pairs, 198 based on Foata normal form. 3/1624 useless extension candidates. Maximal degree in co-relation 6460. Up to 1228 conditions per place. [2024-10-14 19:57:11,666 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 88 selfloop transitions, 31 changer transitions 3/126 dead transitions. [2024-10-14 19:57:11,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 1216 flow [2024-10-14 19:57:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:57:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:57:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-10-14 19:57:11,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33181818181818185 [2024-10-14 19:57:11,668 INFO L175 Difference]: Start difference. First operand has 119 places, 100 transitions, 838 flow. Second operand 11 states and 146 transitions. [2024-10-14 19:57:11,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 126 transitions, 1216 flow [2024-10-14 19:57:11,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1116 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-10-14 19:57:11,678 INFO L231 Difference]: Finished difference. Result has 128 places, 106 transitions, 901 flow [2024-10-14 19:57:11,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=901, PETRI_PLACES=128, PETRI_TRANSITIONS=106} [2024-10-14 19:57:11,680 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 88 predicate places. [2024-10-14 19:57:11,680 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 106 transitions, 901 flow [2024-10-14 19:57:11,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:11,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:11,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:11,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-14 19:57:11,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:11,881 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:11,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1351660687, now seen corresponding path program 7 times [2024-10-14 19:57:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501547323] [2024-10-14 19:57:11,881 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:57:11,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:11,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:11,882 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:11,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-14 19:57:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:11,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:57:11,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:12,247 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:12,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501547323] [2024-10-14 19:57:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501547323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:12,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:12,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 19:57:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005954856] [2024-10-14 19:57:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:12,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:57:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:57:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:57:12,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:57:12,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 106 transitions, 901 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:12,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:12,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:57:12,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:12,689 INFO L124 PetriNetUnfolderBase]: 836/1780 cut-off events. [2024-10-14 19:57:12,689 INFO L125 PetriNetUnfolderBase]: For 7612/7612 co-relation queries the response was YES. [2024-10-14 19:57:12,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7275 conditions, 1780 events. 836/1780 cut-off events. For 7612/7612 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11161 event pairs, 207 based on Foata normal form. 3/1783 useless extension candidates. Maximal degree in co-relation 7204. Up to 1342 conditions per place. [2024-10-14 19:57:12,697 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 91 selfloop transitions, 31 changer transitions 5/131 dead transitions. [2024-10-14 19:57:12,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 1277 flow [2024-10-14 19:57:12,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:57:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:57:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-10-14 19:57:12,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3386363636363636 [2024-10-14 19:57:12,700 INFO L175 Difference]: Start difference. First operand has 128 places, 106 transitions, 901 flow. Second operand 11 states and 149 transitions. [2024-10-14 19:57:12,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 1277 flow [2024-10-14 19:57:12,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 131 transitions, 1193 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-10-14 19:57:12,717 INFO L231 Difference]: Finished difference. Result has 136 places, 109 transitions, 932 flow [2024-10-14 19:57:12,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=932, PETRI_PLACES=136, PETRI_TRANSITIONS=109} [2024-10-14 19:57:12,718 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 96 predicate places. [2024-10-14 19:57:12,718 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 109 transitions, 932 flow [2024-10-14 19:57:12,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:12,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:12,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:12,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-14 19:57:12,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:12,919 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:12,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2112975087, now seen corresponding path program 8 times [2024-10-14 19:57:12,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:12,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643239726] [2024-10-14 19:57:12,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:57:12,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:12,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:12,921 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:12,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-14 19:57:12,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:57:12,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:12,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:57:12,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:13,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:13,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:13,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643239726] [2024-10-14 19:57:13,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643239726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:13,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:13,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 19:57:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106810158] [2024-10-14 19:57:13,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:13,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:57:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:13,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:57:13,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:57:13,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:57:13,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 109 transitions, 932 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:13,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:13,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:57:13,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:13,652 INFO L124 PetriNetUnfolderBase]: 872/1882 cut-off events. [2024-10-14 19:57:13,652 INFO L125 PetriNetUnfolderBase]: For 6706/6706 co-relation queries the response was YES. [2024-10-14 19:57:13,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7490 conditions, 1882 events. 872/1882 cut-off events. For 6706/6706 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12098 event pairs, 252 based on Foata normal form. 3/1885 useless extension candidates. Maximal degree in co-relation 7418. Up to 1489 conditions per place. [2024-10-14 19:57:13,661 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 93 selfloop transitions, 30 changer transitions 3/130 dead transitions. [2024-10-14 19:57:13,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 130 transitions, 1266 flow [2024-10-14 19:57:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:57:13,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:57:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-10-14 19:57:13,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-10-14 19:57:13,663 INFO L175 Difference]: Start difference. First operand has 136 places, 109 transitions, 932 flow. Second operand 11 states and 145 transitions. [2024-10-14 19:57:13,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 130 transitions, 1266 flow [2024-10-14 19:57:13,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 130 transitions, 1193 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-10-14 19:57:13,676 INFO L231 Difference]: Finished difference. Result has 142 places, 111 transitions, 952 flow [2024-10-14 19:57:13,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=952, PETRI_PLACES=142, PETRI_TRANSITIONS=111} [2024-10-14 19:57:13,676 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 102 predicate places. [2024-10-14 19:57:13,677 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 111 transitions, 952 flow [2024-10-14 19:57:13,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:13,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:13,677 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:13,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-14 19:57:13,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:13,878 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:13,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:13,878 INFO L85 PathProgramCache]: Analyzing trace with hash 609594811, now seen corresponding path program 9 times [2024-10-14 19:57:13,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:13,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277985174] [2024-10-14 19:57:13,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:57:13,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:13,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:13,880 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:13,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-14 19:57:13,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 19:57:13,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:13,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:57:13,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:14,198 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:14,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:14,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277985174] [2024-10-14 19:57:14,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277985174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:14,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:14,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 19:57:14,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893371777] [2024-10-14 19:57:14,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:14,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:57:14,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:57:14,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:57:14,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:57:14,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 111 transitions, 952 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:14,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:14,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:57:14,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:14,573 INFO L124 PetriNetUnfolderBase]: 947/2035 cut-off events. [2024-10-14 19:57:14,573 INFO L125 PetriNetUnfolderBase]: For 7579/7579 co-relation queries the response was YES. [2024-10-14 19:57:14,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 2035 events. 947/2035 cut-off events. For 7579/7579 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13309 event pairs, 276 based on Foata normal form. 3/2035 useless extension candidates. Maximal degree in co-relation 8051. Up to 1588 conditions per place. [2024-10-14 19:57:14,584 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 95 selfloop transitions, 30 changer transitions 5/134 dead transitions. [2024-10-14 19:57:14,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 134 transitions, 1331 flow [2024-10-14 19:57:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:57:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:57:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-10-14 19:57:14,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-10-14 19:57:14,585 INFO L175 Difference]: Start difference. First operand has 142 places, 111 transitions, 952 flow. Second operand 11 states and 150 transitions. [2024-10-14 19:57:14,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 134 transitions, 1331 flow [2024-10-14 19:57:14,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 134 transitions, 1259 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-10-14 19:57:14,601 INFO L231 Difference]: Finished difference. Result has 146 places, 114 transitions, 995 flow [2024-10-14 19:57:14,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=995, PETRI_PLACES=146, PETRI_TRANSITIONS=114} [2024-10-14 19:57:14,602 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 106 predicate places. [2024-10-14 19:57:14,602 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 114 transitions, 995 flow [2024-10-14 19:57:14,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:14,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:14,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:14,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-14 19:57:14,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:14,803 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:14,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:14,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1021910651, now seen corresponding path program 10 times [2024-10-14 19:57:14,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:14,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182639842] [2024-10-14 19:57:14,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:57:14,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:14,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:14,805 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:14,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-14 19:57:14,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:57:14,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:14,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:57:14,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:15,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:15,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:15,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182639842] [2024-10-14 19:57:15,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182639842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:15,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:15,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 19:57:15,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590002840] [2024-10-14 19:57:15,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:15,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:57:15,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:15,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:57:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:57:15,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:57:15,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 114 transitions, 995 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:15,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:15,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:57:15,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:15,443 INFO L124 PetriNetUnfolderBase]: 908/2035 cut-off events. [2024-10-14 19:57:15,444 INFO L125 PetriNetUnfolderBase]: For 8443/8443 co-relation queries the response was YES. [2024-10-14 19:57:15,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8179 conditions, 2035 events. 908/2035 cut-off events. For 8443/8443 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13857 event pairs, 282 based on Foata normal form. 3/2017 useless extension candidates. Maximal degree in co-relation 8102. Up to 1339 conditions per place. [2024-10-14 19:57:15,453 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 87 selfloop transitions, 39 changer transitions 5/136 dead transitions. [2024-10-14 19:57:15,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 136 transitions, 1371 flow [2024-10-14 19:57:15,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:57:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:57:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-10-14 19:57:15,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-10-14 19:57:15,455 INFO L175 Difference]: Start difference. First operand has 146 places, 114 transitions, 995 flow. Second operand 10 states and 154 transitions. [2024-10-14 19:57:15,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 136 transitions, 1371 flow [2024-10-14 19:57:15,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 136 transitions, 1280 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-10-14 19:57:15,472 INFO L231 Difference]: Finished difference. Result has 151 places, 119 transitions, 1055 flow [2024-10-14 19:57:15,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1055, PETRI_PLACES=151, PETRI_TRANSITIONS=119} [2024-10-14 19:57:15,472 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 111 predicate places. [2024-10-14 19:57:15,473 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 119 transitions, 1055 flow [2024-10-14 19:57:15,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:15,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:15,473 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-14 19:57:15,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:15,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:15,673 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:15,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash -366624145, now seen corresponding path program 3 times [2024-10-14 19:57:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:15,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555720176] [2024-10-14 19:57:15,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:57:15,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:15,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:15,677 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:15,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-14 19:57:15,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-14 19:57:15,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:15,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 19:57:15,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:15,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:16,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:17,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:17,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555720176] [2024-10-14 19:57:17,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555720176] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:17,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:17,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-14 19:57:17,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927522663] [2024-10-14 19:57:17,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:17,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 19:57:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 19:57:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-14 19:57:18,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:57:18,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 119 transitions, 1055 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) [2024-10-14 19:57:18,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:18,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:57:18,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:29,285 INFO L124 PetriNetUnfolderBase]: 791/1873 cut-off events. [2024-10-14 19:57:29,285 INFO L125 PetriNetUnfolderBase]: For 9387/9405 co-relation queries the response was YES. [2024-10-14 19:57:29,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8001 conditions, 1873 events. 791/1873 cut-off events. For 9387/9405 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12800 event pairs, 525 based on Foata normal form. 12/1864 useless extension candidates. Maximal degree in co-relation 7917. Up to 1497 conditions per place. [2024-10-14 19:57:29,294 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 84 selfloop transitions, 66 changer transitions 0/155 dead transitions. [2024-10-14 19:57:29,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 155 transitions, 1667 flow [2024-10-14 19:57:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-14 19:57:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-14 19:57:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 513 transitions. [2024-10-14 19:57:29,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27880434782608693 [2024-10-14 19:57:29,296 INFO L175 Difference]: Start difference. First operand has 151 places, 119 transitions, 1055 flow. Second operand 46 states and 513 transitions. [2024-10-14 19:57:29,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 155 transitions, 1667 flow [2024-10-14 19:57:29,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 155 transitions, 1582 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-14 19:57:29,315 INFO L231 Difference]: Finished difference. Result has 199 places, 155 transitions, 1468 flow [2024-10-14 19:57:29,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1468, PETRI_PLACES=199, PETRI_TRANSITIONS=155} [2024-10-14 19:57:29,315 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 159 predicate places. [2024-10-14 19:57:29,315 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 155 transitions, 1468 flow [2024-10-14 19:57:29,316 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) [2024-10-14 19:57:29,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:29,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:29,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:29,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:29,516 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:29,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash -622766776, now seen corresponding path program 1 times [2024-10-14 19:57:29,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:29,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717740306] [2024-10-14 19:57:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:29,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:29,518 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:29,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-10-14 19:57:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:29,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:57:29,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:29,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:29,726 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-14 19:57:29,726 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 91 treesize of output 28 [2024-10-14 19:57:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:29,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:29,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717740306] [2024-10-14 19:57:29,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717740306] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:29,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:29,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-14 19:57:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981886926] [2024-10-14 19:57:29,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:29,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 19:57:29,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 19:57:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:57:29,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:57:29,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 155 transitions, 1468 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:29,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:29,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:57:29,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:30,213 INFO L124 PetriNetUnfolderBase]: 1169/2530 cut-off events. [2024-10-14 19:57:30,213 INFO L125 PetriNetUnfolderBase]: For 12109/12109 co-relation queries the response was YES. [2024-10-14 19:57:30,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10316 conditions, 2530 events. 1169/2530 cut-off events. For 12109/12109 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16837 event pairs, 213 based on Foata normal form. 33/2560 useless extension candidates. Maximal degree in co-relation 10200. Up to 1297 conditions per place. [2024-10-14 19:57:30,224 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 173 selfloop transitions, 14 changer transitions 0/191 dead transitions. [2024-10-14 19:57:30,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 191 transitions, 2063 flow [2024-10-14 19:57:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:57:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:57:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-10-14 19:57:30,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-14 19:57:30,225 INFO L175 Difference]: Start difference. First operand has 199 places, 155 transitions, 1468 flow. Second operand 6 states and 108 transitions. [2024-10-14 19:57:30,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 191 transitions, 2063 flow [2024-10-14 19:57:30,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 191 transitions, 1901 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-14 19:57:30,248 INFO L231 Difference]: Finished difference. Result has 185 places, 159 transitions, 1408 flow [2024-10-14 19:57:30,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1408, PETRI_PLACES=185, PETRI_TRANSITIONS=159} [2024-10-14 19:57:30,248 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 145 predicate places. [2024-10-14 19:57:30,248 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 159 transitions, 1408 flow [2024-10-14 19:57:30,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:30,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:30,249 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:30,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-10-14 19:57:30,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:30,449 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:30,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1701060505, now seen corresponding path program 1 times [2024-10-14 19:57:30,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:30,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523982956] [2024-10-14 19:57:30,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:30,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:30,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:30,451 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:30,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-10-14 19:57:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:30,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:57:30,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:57:30,560 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:30,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523982956] [2024-10-14 19:57:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523982956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:30,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:30,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:57:30,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561235715] [2024-10-14 19:57:30,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:30,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:57:30,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:57:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:57:30,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-14 19:57:30,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 159 transitions, 1408 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:30,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:30,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-14 19:57:30,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:30,900 INFO L124 PetriNetUnfolderBase]: 920/1999 cut-off events. [2024-10-14 19:57:30,900 INFO L125 PetriNetUnfolderBase]: For 12190/12190 co-relation queries the response was YES. [2024-10-14 19:57:30,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8897 conditions, 1999 events. 920/1999 cut-off events. For 12190/12190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12192 event pairs, 264 based on Foata normal form. 99/2095 useless extension candidates. Maximal degree in co-relation 8795. Up to 820 conditions per place. [2024-10-14 19:57:30,910 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 108 selfloop transitions, 5 changer transitions 45/162 dead transitions. [2024-10-14 19:57:30,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 162 transitions, 1717 flow [2024-10-14 19:57:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:57:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:57:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-10-14 19:57:30,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-10-14 19:57:30,911 INFO L175 Difference]: Start difference. First operand has 185 places, 159 transitions, 1408 flow. Second operand 5 states and 87 transitions. [2024-10-14 19:57:30,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 162 transitions, 1717 flow [2024-10-14 19:57:30,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 162 transitions, 1639 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-10-14 19:57:30,934 INFO L231 Difference]: Finished difference. Result has 186 places, 107 transitions, 895 flow [2024-10-14 19:57:30,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=186, PETRI_TRANSITIONS=107} [2024-10-14 19:57:30,935 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 146 predicate places. [2024-10-14 19:57:30,935 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 107 transitions, 895 flow [2024-10-14 19:57:30,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:30,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:30,935 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:30,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-10-14 19:57:31,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:31,136 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:31,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:31,136 INFO L85 PathProgramCache]: Analyzing trace with hash -242015340, now seen corresponding path program 1 times [2024-10-14 19:57:31,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:31,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966752937] [2024-10-14 19:57:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:31,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:31,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:31,138 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:31,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-10-14 19:57:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:31,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:57:31,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:31,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:57:31,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:57:31,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:31,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966752937] [2024-10-14 19:57:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966752937] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:31,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:31,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-14 19:57:31,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108235033] [2024-10-14 19:57:31,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:31,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:57:31,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:31,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:57:31,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:57:31,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-14 19:57:31,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 107 transitions, 895 flow. Second operand has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:31,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:31,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-14 19:57:31,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:32,360 INFO L124 PetriNetUnfolderBase]: 399/939 cut-off events. [2024-10-14 19:57:32,360 INFO L125 PetriNetUnfolderBase]: For 3287/3287 co-relation queries the response was YES. [2024-10-14 19:57:32,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 939 events. 399/939 cut-off events. For 3287/3287 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4660 event pairs, 226 based on Foata normal form. 32/964 useless extension candidates. Maximal degree in co-relation 3709. Up to 580 conditions per place. [2024-10-14 19:57:32,365 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 54 selfloop transitions, 46 changer transitions 29/135 dead transitions. [2024-10-14 19:57:32,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 135 transitions, 1372 flow [2024-10-14 19:57:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:57:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:57:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-10-14 19:57:32,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-10-14 19:57:32,366 INFO L175 Difference]: Start difference. First operand has 186 places, 107 transitions, 895 flow. Second operand 8 states and 117 transitions. [2024-10-14 19:57:32,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 135 transitions, 1372 flow [2024-10-14 19:57:32,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 1222 flow, removed 38 selfloop flow, removed 22 redundant places. [2024-10-14 19:57:32,375 INFO L231 Difference]: Finished difference. Result has 140 places, 106 transitions, 884 flow [2024-10-14 19:57:32,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=884, PETRI_PLACES=140, PETRI_TRANSITIONS=106} [2024-10-14 19:57:32,375 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 100 predicate places. [2024-10-14 19:57:32,376 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 106 transitions, 884 flow [2024-10-14 19:57:32,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:32,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:32,376 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:32,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:32,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:32,576 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:32,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1891889626, now seen corresponding path program 2 times [2024-10-14 19:57:32,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:32,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846955563] [2024-10-14 19:57:32,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:57:32,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:32,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:32,578 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:32,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-10-14 19:57:32,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:57:32,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:32,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:57:32,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:57:33,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:33,947 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-14 19:57:33,947 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 94 treesize of output 72 [2024-10-14 19:57:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:57:34,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:34,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846955563] [2024-10-14 19:57:34,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846955563] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:34,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:34,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-10-14 19:57:34,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013794488] [2024-10-14 19:57:34,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:34,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 19:57:34,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 19:57:34,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2024-10-14 19:57:34,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 19:57:34,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 106 transitions, 884 flow. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:34,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:34,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 19:57:34,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:36,637 INFO L124 PetriNetUnfolderBase]: 930/1797 cut-off events. [2024-10-14 19:57:36,637 INFO L125 PetriNetUnfolderBase]: For 2310/2310 co-relation queries the response was YES. [2024-10-14 19:57:36,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 1797 events. 930/1797 cut-off events. For 2310/2310 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9488 event pairs, 18 based on Foata normal form. 4/1801 useless extension candidates. Maximal degree in co-relation 5667. Up to 775 conditions per place. [2024-10-14 19:57:36,645 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 131 selfloop transitions, 78 changer transitions 9/221 dead transitions. [2024-10-14 19:57:36,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 221 transitions, 1787 flow [2024-10-14 19:57:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 19:57:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 19:57:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 300 transitions. [2024-10-14 19:57:36,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32608695652173914 [2024-10-14 19:57:36,647 INFO L175 Difference]: Start difference. First operand has 140 places, 106 transitions, 884 flow. Second operand 23 states and 300 transitions. [2024-10-14 19:57:36,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 221 transitions, 1787 flow [2024-10-14 19:57:36,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 221 transitions, 1701 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-10-14 19:57:36,657 INFO L231 Difference]: Finished difference. Result has 161 places, 154 transitions, 1327 flow [2024-10-14 19:57:36,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1327, PETRI_PLACES=161, PETRI_TRANSITIONS=154} [2024-10-14 19:57:36,658 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 121 predicate places. [2024-10-14 19:57:36,658 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 154 transitions, 1327 flow [2024-10-14 19:57:36,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:36,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:36,659 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:36,663 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 (24)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:36,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:36,859 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:36,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash 198941118, now seen corresponding path program 3 times [2024-10-14 19:57:36,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:36,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845296390] [2024-10-14 19:57:36,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:57:36,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:36,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:36,861 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:36,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-10-14 19:57:36,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:57:36,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:36,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:57:36,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:57:37,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:38,287 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-14 19:57:38,288 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 94 treesize of output 72 [2024-10-14 19:57:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:57:38,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:38,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845296390] [2024-10-14 19:57:38,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845296390] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:38,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:38,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-10-14 19:57:38,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841966039] [2024-10-14 19:57:38,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:38,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 19:57:38,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:38,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 19:57:38,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2024-10-14 19:57:38,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 19:57:38,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 154 transitions, 1327 flow. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:38,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:38,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 19:57:38,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:40,836 INFO L124 PetriNetUnfolderBase]: 996/1951 cut-off events. [2024-10-14 19:57:40,837 INFO L125 PetriNetUnfolderBase]: For 4948/4948 co-relation queries the response was YES. [2024-10-14 19:57:40,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7578 conditions, 1951 events. 996/1951 cut-off events. For 4948/4948 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 10849 event pairs, 32 based on Foata normal form. 2/1953 useless extension candidates. Maximal degree in co-relation 7527. Up to 945 conditions per place. [2024-10-14 19:57:40,845 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 135 selfloop transitions, 93 changer transitions 5/236 dead transitions. [2024-10-14 19:57:40,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 236 transitions, 2166 flow [2024-10-14 19:57:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 19:57:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 19:57:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 294 transitions. [2024-10-14 19:57:40,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31956521739130433 [2024-10-14 19:57:40,846 INFO L175 Difference]: Start difference. First operand has 161 places, 154 transitions, 1327 flow. Second operand 23 states and 294 transitions. [2024-10-14 19:57:40,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 236 transitions, 2166 flow [2024-10-14 19:57:40,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 236 transitions, 2031 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-14 19:57:40,864 INFO L231 Difference]: Finished difference. Result has 183 places, 177 transitions, 1655 flow [2024-10-14 19:57:40,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1655, PETRI_PLACES=183, PETRI_TRANSITIONS=177} [2024-10-14 19:57:40,864 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 143 predicate places. [2024-10-14 19:57:40,865 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 177 transitions, 1655 flow [2024-10-14 19:57:40,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:40,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:40,865 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:40,870 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 (25)] Ended with exit code 0 [2024-10-14 19:57:41,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:41,066 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:41,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1669479410, now seen corresponding path program 4 times [2024-10-14 19:57:41,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:41,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627637338] [2024-10-14 19:57:41,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:57:41,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:41,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:41,068 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:41,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-10-14 19:57:41,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:57:41,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:41,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:57:41,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:57:41,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:42,460 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-14 19:57:42,460 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 94 treesize of output 72 [2024-10-14 19:57:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 19:57:42,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:42,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627637338] [2024-10-14 19:57:42,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627637338] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:42,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:42,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-10-14 19:57:42,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893514522] [2024-10-14 19:57:42,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:42,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 19:57:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:42,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 19:57:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-10-14 19:57:42,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-14 19:57:42,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 177 transitions, 1655 flow. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:42,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:42,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-14 19:57:42,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:45,181 INFO L124 PetriNetUnfolderBase]: 1036/2069 cut-off events. [2024-10-14 19:57:45,181 INFO L125 PetriNetUnfolderBase]: For 7948/7948 co-relation queries the response was YES. [2024-10-14 19:57:45,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8708 conditions, 2069 events. 1036/2069 cut-off events. For 7948/7948 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11978 event pairs, 40 based on Foata normal form. 2/2071 useless extension candidates. Maximal degree in co-relation 8654. Up to 939 conditions per place. [2024-10-14 19:57:45,189 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 132 selfloop transitions, 102 changer transitions 5/242 dead transitions. [2024-10-14 19:57:45,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 242 transitions, 2413 flow [2024-10-14 19:57:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-14 19:57:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-14 19:57:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 260 transitions. [2024-10-14 19:57:45,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-10-14 19:57:45,190 INFO L175 Difference]: Start difference. First operand has 183 places, 177 transitions, 1655 flow. Second operand 20 states and 260 transitions. [2024-10-14 19:57:45,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 242 transitions, 2413 flow [2024-10-14 19:57:45,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 242 transitions, 2234 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-10-14 19:57:45,214 INFO L231 Difference]: Finished difference. Result has 192 places, 187 transitions, 1851 flow [2024-10-14 19:57:45,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1851, PETRI_PLACES=192, PETRI_TRANSITIONS=187} [2024-10-14 19:57:45,215 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 152 predicate places. [2024-10-14 19:57:45,215 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 187 transitions, 1851 flow [2024-10-14 19:57:45,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:45,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:45,215 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:45,220 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 (26)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:45,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:45,416 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-14 19:57:45,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:45,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1564052236, now seen corresponding path program 5 times [2024-10-14 19:57:45,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:45,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106533701] [2024-10-14 19:57:45,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:57:45,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:45,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:45,418 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:45,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-10-14 19:57:45,538 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 19:57:45,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:45,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-14 19:57:45,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:45,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-10-14 19:57:45,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 19:57:45,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 21 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 58 [2024-10-14 19:57:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:47,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:53,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 644 treesize of output 628