./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:36:46,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:36:46,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:36:46,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:36:46,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:36:46,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:36:46,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:36:46,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:36:46,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:36:46,942 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:36:46,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:36:46,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:36:46,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:36:46,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:36:46,946 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:36:46,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:36:46,947 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:36:46,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:36:46,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:36:46,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:36:46,951 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:36:46,951 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:36:46,951 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:36:46,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:36:46,952 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:36:46,952 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:36:46,952 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:36:46,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:36:46,953 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:36:46,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:36:46,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:36:46,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:36:46,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:36:46,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:36:46,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:36:46,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:36:46,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:36:46,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:36:46,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:36:46,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:36:46,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:36:46,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:36:46,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-10-13 12:36:47,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:36:47,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:36:47,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:36:47,245 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:36:47,248 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:36:47,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-13 12:36:48,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:36:48,935 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:36:48,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-13 12:36:48,945 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d59abd43/1e549a1eb1ec44a88da9956af3798bec/FLAG639ccc9d3 [2024-10-13 12:36:48,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d59abd43/1e549a1eb1ec44a88da9956af3798bec [2024-10-13 12:36:48,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:36:48,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:36:48,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:36:48,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:36:48,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:36:48,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:36:48" (1/1) ... [2024-10-13 12:36:48,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4007c8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:48, skipping insertion in model container [2024-10-13 12:36:48,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:36:48" (1/1) ... [2024-10-13 12:36:49,007 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:36:49,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:36:49,266 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) [2024-10-13 12:36:49,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@70b3e34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:49, skipping insertion in model container [2024-10-13 12:36:49,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:36:49,267 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:36:49,269 INFO L158 Benchmark]: Toolchain (without parser) took 306.08ms. Allocated memory is still 172.0MB. Free memory was 113.2MB in the beginning and 101.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:36:49,270 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 172.0MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:36:49,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.76ms. Allocated memory is still 172.0MB. Free memory was 112.8MB in the beginning and 101.4MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:36:49,271 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 172.0MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.76ms. Allocated memory is still 172.0MB. Free memory was 112.8MB in the beginning and 101.4MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 122]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:36:51,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:36:51,466 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:36:51,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:36:51,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:36:51,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:36:51,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:36:51,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:36:51,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:36:51,505 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:36:51,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:36:51,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:36:51,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:36:51,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:36:51,509 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:36:51,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:36:51,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:36:51,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:36:51,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:36:51,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:36:51,513 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:36:51,514 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:36:51,514 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:36:51,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:36:51,515 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:36:51,515 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:36:51,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:36:51,516 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:36:51,516 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:36:51,516 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:36:51,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:36:51,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:36:51,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:36:51,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:36:51,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:36:51,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:36:51,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:36:51,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:36:51,523 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:36:51,523 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:36:51,524 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:36:51,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:36:51,525 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:36:51,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:36:51,526 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:36:51,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-10-13 12:36:51,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:36:51,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:36:51,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:36:51,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:36:51,894 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:36:51,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-13 12:36:53,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:36:53,533 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:36:53,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-13 12:36:53,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae92309f/13a28f05c8cd46e898c05d31de18db14/FLAG310801d11 [2024-10-13 12:36:53,907 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae92309f/13a28f05c8cd46e898c05d31de18db14 [2024-10-13 12:36:53,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:36:53,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:36:53,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:36:53,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:36:53,919 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:36:53,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:36:53" (1/1) ... [2024-10-13 12:36:53,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689967cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:53, skipping insertion in model container [2024-10-13 12:36:53,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:36:53" (1/1) ... [2024-10-13 12:36:53,951 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:36:54,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:36:54,225 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:36:54,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:36:54,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:36:54,273 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:36:54,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:36:54,323 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:36:54,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54 WrapperNode [2024-10-13 12:36:54,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:36:54,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:36:54,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:36:54,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:36:54,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,380 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 208 [2024-10-13 12:36:54,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:36:54,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:36:54,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:36:54,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:36:54,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,421 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-13 12:36:54,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:36:54,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:36:54,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:36:54,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:36:54,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (1/1) ... [2024-10-13 12:36:54,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:36:54,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:36:54,483 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) [2024-10-13 12:36:54,485 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 [2024-10-13 12:36:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:36:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:36:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:36:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:36:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:36:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:36:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:36:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:36:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:36:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:36:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:36:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:36:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:36:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:36:54,523 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:36:54,635 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:36:54,637 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:36:55,129 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:36:55,129 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:36:55,439 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:36:55,440 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 12:36:55,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:36:55 BoogieIcfgContainer [2024-10-13 12:36:55,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:36:55,442 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:36:55,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:36:55,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:36:55,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:36:53" (1/3) ... [2024-10-13 12:36:55,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c47e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:36:55, skipping insertion in model container [2024-10-13 12:36:55,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:54" (2/3) ... [2024-10-13 12:36:55,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c47e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:36:55, skipping insertion in model container [2024-10-13 12:36:55,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:36:55" (3/3) ... [2024-10-13 12:36:55,450 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2024-10-13 12:36:55,467 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:36:55,467 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 12:36:55,467 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:36:55,526 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 12:36:55,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 88 flow [2024-10-13 12:36:55,584 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2024-10-13 12:36:55,585 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:36:55,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 5/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-10-13 12:36:55,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 88 flow [2024-10-13 12:36:55,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 80 flow [2024-10-13 12:36:55,608 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:36:55,617 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;@1ca63d92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:36:55,618 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-13 12:36:55,621 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:36:55,621 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:36:55,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:36:55,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:36:55,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:36:55,623 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:36:55,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:36:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash 657532, now seen corresponding path program 1 times [2024-10-13 12:36:55,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:36:55,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818328112] [2024-10-13 12:36:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:36:55,638 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 [2024-10-13 12:36:55,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:36:55,640 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) [2024-10-13 12:36:55,641 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 [2024-10-13 12:36:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:36:55,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:36:55,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:36:55,803 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 [2024-10-13 12:36:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:36:55,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:36:55,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:36:55,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818328112] [2024-10-13 12:36:55,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818328112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:36:55,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:36:55,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:36:55,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418576041] [2024-10-13 12:36:55,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:36:55,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:36:55,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:36:55,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:36:55,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:36:55,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:36:55,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 80 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) [2024-10-13 12:36:55,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:36:55,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:36:55,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:36:56,061 INFO L124 PetriNetUnfolderBase]: 128/255 cut-off events. [2024-10-13 12:36:56,061 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 12:36:56,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 255 events. 128/255 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 903 event pairs, 100 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 450. Up to 221 conditions per place. [2024-10-13 12:36:56,067 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 21 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-10-13 12:36:56,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 116 flow [2024-10-13 12:36:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:36:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:36:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-13 12:36:56,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-10-13 12:36:56,082 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 54 transitions. [2024-10-13 12:36:56,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 116 flow [2024-10-13 12:36:56,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:36:56,090 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-10-13 12:36:56,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-10-13 12:36:56,099 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-10-13 12:36:56,099 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-10-13 12:36:56,099 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) [2024-10-13 12:36:56,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:36:56,100 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:36:56,104 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 [2024-10-13 12:36:56,300 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 [2024-10-13 12:36:56,301 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:36:56,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:36:56,301 INFO L85 PathProgramCache]: Analyzing trace with hash 657533, now seen corresponding path program 1 times [2024-10-13 12:36:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:36:56,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138571162] [2024-10-13 12:36:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:36:56,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:36:56,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:36:56,306 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) [2024-10-13 12:36:56,307 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 [2024-10-13 12:36:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:36:56,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:36:56,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:36:56,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 12:36:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:36:56,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:36:56,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:36:56,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138571162] [2024-10-13 12:36:56,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138571162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:36:56,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:36:56,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:36:56,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578346745] [2024-10-13 12:36:56,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:36:56,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:36:56,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:36:56,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:36:56,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:36:56,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:36:56,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 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) [2024-10-13 12:36:56,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:36:56,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:36:56,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:36:56,584 INFO L124 PetriNetUnfolderBase]: 129/258 cut-off events. [2024-10-13 12:36:56,585 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 12:36:56,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 258 events. 129/258 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 920 event pairs, 100 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 476. Up to 226 conditions per place. [2024-10-13 12:36:56,588 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 24 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-10-13 12:36:56,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 128 flow [2024-10-13 12:36:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:36:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:36:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-10-13 12:36:56,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-10-13 12:36:56,590 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 3 states and 55 transitions. [2024-10-13 12:36:56,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 128 flow [2024-10-13 12:36:56,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:36:56,592 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 81 flow [2024-10-13 12:36:56,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2024-10-13 12:36:56,593 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2024-10-13 12:36:56,593 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 81 flow [2024-10-13 12:36:56,594 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) [2024-10-13 12:36:56,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:36:56,594 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:36:56,598 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 [2024-10-13 12:36:56,796 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 [2024-10-13 12:36:56,797 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:36:56,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:36:56,798 INFO L85 PathProgramCache]: Analyzing trace with hash 631909603, now seen corresponding path program 1 times [2024-10-13 12:36:56,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:36:56,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790732012] [2024-10-13 12:36:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:36:56,799 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 [2024-10-13 12:36:56,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:36:56,802 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) [2024-10-13 12:36:56,803 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 [2024-10-13 12:36:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:36:56,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:36:56,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:36:56,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 12:36:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:36:56,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:36:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:36:57,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:36:57,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790732012] [2024-10-13 12:36:57,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790732012] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:36:57,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:36:57,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2024-10-13 12:36:57,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13054232] [2024-10-13 12:36:57,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:36:57,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:36:57,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:36:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:36:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:36:57,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:36:57,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2024-10-13 12:36:57,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:36:57,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:36:57,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:36:57,490 INFO L124 PetriNetUnfolderBase]: 131/264 cut-off events. [2024-10-13 12:36:57,491 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 12:36:57,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 264 events. 131/264 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 969 event pairs, 100 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 476. Up to 228 conditions per place. [2024-10-13 12:36:57,493 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 26 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2024-10-13 12:36:57,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 169 flow [2024-10-13 12:36:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:36:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:36:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-10-13 12:36:57,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-10-13 12:36:57,496 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 81 flow. Second operand 5 states and 80 transitions. [2024-10-13 12:36:57,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 169 flow [2024-10-13 12:36:57,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:36:57,498 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 122 flow [2024-10-13 12:36:57,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-10-13 12:36:57,499 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-10-13 12:36:57,499 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 122 flow [2024-10-13 12:36:57,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2024-10-13 12:36:57,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:36:57,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:36:57,503 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 [2024-10-13 12:36:57,702 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 [2024-10-13 12:36:57,703 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:36:57,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:36:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1745929134, now seen corresponding path program 1 times [2024-10-13 12:36:57,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:36:57,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585422865] [2024-10-13 12:36:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:36:57,704 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 [2024-10-13 12:36:57,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:36:57,707 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) [2024-10-13 12:36:57,708 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 [2024-10-13 12:36:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:36:57,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:36:57,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:36:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:36:57,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:36:57,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:36:57,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585422865] [2024-10-13 12:36:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585422865] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:36:57,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:36:57,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:36:57,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802074982] [2024-10-13 12:36:57,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:36:57,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:36:57,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:36:57,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:36:57,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:36:57,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:36:57,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-13 12:36:57,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:36:57,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:36:57,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:36:57,927 INFO L124 PetriNetUnfolderBase]: 130/263 cut-off events. [2024-10-13 12:36:57,927 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-13 12:36:57,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 263 events. 130/263 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 941 event pairs, 100 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 493. Up to 230 conditions per place. [2024-10-13 12:36:57,930 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-10-13 12:36:57,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 176 flow [2024-10-13 12:36:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:36:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:36:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-10-13 12:36:57,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-10-13 12:36:57,932 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 122 flow. Second operand 3 states and 56 transitions. [2024-10-13 12:36:57,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 176 flow [2024-10-13 12:36:57,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 166 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-13 12:36:57,934 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 110 flow [2024-10-13 12:36:57,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-10-13 12:36:57,935 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-10-13 12:36:57,935 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 110 flow [2024-10-13 12:36:57,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-13 12:36:57,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:36:57,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:36:57,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-13 12:36:58,136 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 [2024-10-13 12:36:58,137 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:36:58,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:36:58,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1097054956, now seen corresponding path program 1 times [2024-10-13 12:36:58,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:36:58,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652933705] [2024-10-13 12:36:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:36:58,139 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 [2024-10-13 12:36:58,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:36:58,140 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) [2024-10-13 12:36:58,141 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 [2024-10-13 12:36:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:36:58,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:36:58,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:36:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:36:58,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:36:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:36:58,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:36:58,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652933705] [2024-10-13 12:36:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652933705] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:36:58,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:36:58,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-10-13 12:36:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925539771] [2024-10-13 12:36:58,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:36:58,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:36:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:36:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:36:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:36:58,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:36:58,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:36:58,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:36:58,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:36:58,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:36:58,455 INFO L124 PetriNetUnfolderBase]: 128/261 cut-off events. [2024-10-13 12:36:58,455 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-13 12:36:58,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 261 events. 128/261 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 903 event pairs, 100 based on Foata normal form. 2/221 useless extension candidates. Maximal degree in co-relation 502. Up to 223 conditions per place. [2024-10-13 12:36:58,457 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 23 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-10-13 12:36:58,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 164 flow [2024-10-13 12:36:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:36:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:36:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-10-13 12:36:58,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-10-13 12:36:58,459 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 110 flow. Second operand 5 states and 80 transitions. [2024-10-13 12:36:58,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 164 flow [2024-10-13 12:36:58,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:36:58,461 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 116 flow [2024-10-13 12:36:58,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-10-13 12:36:58,461 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-10-13 12:36:58,462 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 116 flow [2024-10-13 12:36:58,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:36:58,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:36:58,462 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1] [2024-10-13 12:36:58,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-13 12:36:58,664 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 [2024-10-13 12:36:58,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:36:58,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:36:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1168223953, now seen corresponding path program 2 times [2024-10-13 12:36:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:36:58,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965414269] [2024-10-13 12:36:58,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:36:58,666 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 [2024-10-13 12:36:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:36:58,668 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) [2024-10-13 12:36:58,669 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 [2024-10-13 12:36:58,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:36:58,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:36:58,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:36:58,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:36:58,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 12:36:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:36:58,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:36:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:36:59,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:36:59,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965414269] [2024-10-13 12:36:59,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965414269] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:36:59,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:36:59,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-13 12:36:59,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849364065] [2024-10-13 12:36:59,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:36:59,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:36:59,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:36:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:36:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:36:59,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:36:59,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 116 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2024-10-13 12:36:59,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:36:59,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:36:59,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:36:59,894 INFO L124 PetriNetUnfolderBase]: 127/258 cut-off events. [2024-10-13 12:36:59,894 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-13 12:36:59,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 258 events. 127/258 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 897 event pairs, 100 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 488. Up to 221 conditions per place. [2024-10-13 12:36:59,896 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 22 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-10-13 12:36:59,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 32 transitions, 156 flow [2024-10-13 12:36:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:36:59,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:36:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-10-13 12:36:59,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36936936936936937 [2024-10-13 12:36:59,897 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 116 flow. Second operand 6 states and 82 transitions. [2024-10-13 12:36:59,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 32 transitions, 156 flow [2024-10-13 12:36:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 140 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-13 12:36:59,899 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 88 flow [2024-10-13 12:36:59,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-10-13 12:36:59,900 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-10-13 12:36:59,900 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 88 flow [2024-10-13 12:36:59,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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) [2024-10-13 12:36:59,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:36:59,900 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:36:59,904 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 [2024-10-13 12:37:00,101 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 [2024-10-13 12:37:00,101 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:00,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -657628320, now seen corresponding path program 2 times [2024-10-13 12:37:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:00,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796080193] [2024-10-13 12:37:00,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:37:00,102 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 [2024-10-13 12:37:00,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:00,104 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) [2024-10-13 12:37:00,105 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 [2024-10-13 12:37:00,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 12:37:00,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:00,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 12:37:00,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:00,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 12:37:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:00,269 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:00,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:00,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796080193] [2024-10-13 12:37:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796080193] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:00,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:00,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:37:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111567982] [2024-10-13 12:37:00,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:00,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:00,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:37:00,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:37:00,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-10-13 12:37:00,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:00,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:37:00,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:00,487 INFO L124 PetriNetUnfolderBase]: 253/485 cut-off events. [2024-10-13 12:37:00,487 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:37:00,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 485 events. 253/485 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2078 event pairs, 118 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 927. Up to 254 conditions per place. [2024-10-13 12:37:00,490 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 39 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-10-13 12:37:00,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 211 flow [2024-10-13 12:37:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:00,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-10-13 12:37:00,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-10-13 12:37:00,492 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 88 flow. Second operand 5 states and 87 transitions. [2024-10-13 12:37:00,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 211 flow [2024-10-13 12:37:00,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 199 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-13 12:37:00,493 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 92 flow [2024-10-13 12:37:00,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-10-13 12:37:00,499 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-10-13 12:37:00,499 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 92 flow [2024-10-13 12:37:00,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-10-13 12:37:00,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:00,500 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:00,505 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 [2024-10-13 12:37:00,700 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 [2024-10-13 12:37:00,701 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:00,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash -657628321, now seen corresponding path program 1 times [2024-10-13 12:37:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:00,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387228036] [2024-10-13 12:37:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:00,702 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 [2024-10-13 12:37:00,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:00,703 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) [2024-10-13 12:37:00,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-13 12:37:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:00,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:37:00,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:00,787 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 [2024-10-13 12:37:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:00,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:00,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387228036] [2024-10-13 12:37:00,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387228036] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:00,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:00,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:37:00,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269876274] [2024-10-13 12:37:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:00,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:37:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:37:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:37:00,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-13 12:37:00,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:00,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:00,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-13 12:37:00,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:00,973 INFO L124 PetriNetUnfolderBase]: 233/443 cut-off events. [2024-10-13 12:37:00,973 INFO L125 PetriNetUnfolderBase]: For 60/62 co-relation queries the response was YES. [2024-10-13 12:37:00,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 443 events. 233/443 cut-off events. For 60/62 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1723 event pairs, 195 based on Foata normal form. 28/419 useless extension candidates. Maximal degree in co-relation 338. Up to 404 conditions per place. [2024-10-13 12:37:00,976 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 24 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-10-13 12:37:00,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 140 flow [2024-10-13 12:37:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:37:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:37:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-10-13 12:37:00,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3581081081081081 [2024-10-13 12:37:00,977 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 92 flow. Second operand 4 states and 53 transitions. [2024-10-13 12:37:00,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 140 flow [2024-10-13 12:37:00,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:37:00,978 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 86 flow [2024-10-13 12:37:00,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-10-13 12:37:00,979 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-10-13 12:37:00,979 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 86 flow [2024-10-13 12:37:00,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:00,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:00,980 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:00,984 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 [2024-10-13 12:37:01,180 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 [2024-10-13 12:37:01,181 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:01,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1461806733, now seen corresponding path program 1 times [2024-10-13 12:37:01,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:01,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734446522] [2024-10-13 12:37:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:01,182 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 [2024-10-13 12:37:01,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:01,183 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) [2024-10-13 12:37:01,184 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 [2024-10-13 12:37:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:01,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 12:37:01,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:01,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 12:37:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:01,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:01,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:01,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734446522] [2024-10-13 12:37:01,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734446522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:01,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:01,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:37:01,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684506286] [2024-10-13 12:37:01,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:01,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:01,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:01,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:37:01,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:37:01,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-10-13 12:37:01,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:01,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:37:01,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:01,614 INFO L124 PetriNetUnfolderBase]: 443/779 cut-off events. [2024-10-13 12:37:01,614 INFO L125 PetriNetUnfolderBase]: For 88/106 co-relation queries the response was YES. [2024-10-13 12:37:01,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 779 events. 443/779 cut-off events. For 88/106 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3160 event pairs, 228 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 1628. Up to 463 conditions per place. [2024-10-13 12:37:01,619 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 39 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-13 12:37:01,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 212 flow [2024-10-13 12:37:01,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-10-13 12:37:01,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-10-13 12:37:01,621 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 86 flow. Second operand 5 states and 85 transitions. [2024-10-13 12:37:01,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 212 flow [2024-10-13 12:37:01,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:37:01,623 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 99 flow [2024-10-13 12:37:01,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-10-13 12:37:01,624 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-10-13 12:37:01,624 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 99 flow [2024-10-13 12:37:01,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-10-13 12:37:01,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:01,624 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:01,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-13 12:37:01,825 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 [2024-10-13 12:37:01,825 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:01,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:01,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2058777662, now seen corresponding path program 1 times [2024-10-13 12:37:01,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:01,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046358941] [2024-10-13 12:37:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:01,826 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 [2024-10-13 12:37:01,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:01,828 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) [2024-10-13 12:37:01,829 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 [2024-10-13 12:37:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:01,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:37:01,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:01,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 12:37:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:02,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:02,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:02,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046358941] [2024-10-13 12:37:02,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046358941] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:02,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:02,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:37:02,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31118081] [2024-10-13 12:37:02,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:02,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:37:02,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:37:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:37:02,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:37:02,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 99 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:02,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:02,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:37:02,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:03,147 INFO L124 PetriNetUnfolderBase]: 815/1423 cut-off events. [2024-10-13 12:37:03,147 INFO L125 PetriNetUnfolderBase]: For 251/293 co-relation queries the response was YES. [2024-10-13 12:37:03,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3213 conditions, 1423 events. 815/1423 cut-off events. For 251/293 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6644 event pairs, 218 based on Foata normal form. 0/1207 useless extension candidates. Maximal degree in co-relation 3181. Up to 441 conditions per place. [2024-10-13 12:37:03,156 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 75 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2024-10-13 12:37:03,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 83 transitions, 404 flow [2024-10-13 12:37:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:37:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:37:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-10-13 12:37:03,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-10-13 12:37:03,158 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 99 flow. Second operand 7 states and 140 transitions. [2024-10-13 12:37:03,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 83 transitions, 404 flow [2024-10-13 12:37:03,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 83 transitions, 392 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:37:03,162 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 123 flow [2024-10-13 12:37:03,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-10-13 12:37:03,165 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2024-10-13 12:37:03,165 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 123 flow [2024-10-13 12:37:03,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:03,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:03,166 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:03,171 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 [2024-10-13 12:37:03,366 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 [2024-10-13 12:37:03,366 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:03,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2010293320, now seen corresponding path program 1 times [2024-10-13 12:37:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376557165] [2024-10-13 12:37:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:03,367 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 [2024-10-13 12:37:03,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:03,369 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) [2024-10-13 12:37:03,370 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 [2024-10-13 12:37:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:03,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:37:03,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:03,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 12:37:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:03,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:03,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376557165] [2024-10-13 12:37:03,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376557165] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:03,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:03,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:37:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661991752] [2024-10-13 12:37:03,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:03,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:37:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:37:03,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:37:04,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:37:04,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 123 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:04,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:04,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:37:04,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:04,855 INFO L124 PetriNetUnfolderBase]: 1517/2633 cut-off events. [2024-10-13 12:37:04,855 INFO L125 PetriNetUnfolderBase]: For 1054/1092 co-relation queries the response was YES. [2024-10-13 12:37:04,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6130 conditions, 2633 events. 1517/2633 cut-off events. For 1054/1092 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13142 event pairs, 450 based on Foata normal form. 0/2219 useless extension candidates. Maximal degree in co-relation 6096. Up to 885 conditions per place. [2024-10-13 12:37:04,869 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 77 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-10-13 12:37:04,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 85 transitions, 477 flow [2024-10-13 12:37:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:37:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:37:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-10-13 12:37:04,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-10-13 12:37:04,871 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 123 flow. Second operand 7 states and 134 transitions. [2024-10-13 12:37:04,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 85 transitions, 477 flow [2024-10-13 12:37:04,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 85 transitions, 450 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-13 12:37:04,875 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 144 flow [2024-10-13 12:37:04,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2024-10-13 12:37:04,876 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2024-10-13 12:37:04,876 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 144 flow [2024-10-13 12:37:04,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:04,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:04,877 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-10-13 12:37:04,882 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 [2024-10-13 12:37:05,077 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 [2024-10-13 12:37:05,078 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:05,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1653196546, now seen corresponding path program 2 times [2024-10-13 12:37:05,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:05,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197278866] [2024-10-13 12:37:05,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:37:05,079 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 [2024-10-13 12:37:05,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:05,080 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) [2024-10-13 12:37:05,081 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 [2024-10-13 12:37:05,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:37:05,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:05,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 12:37:05,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:05,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 12:37:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:05,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:05,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:05,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197278866] [2024-10-13 12:37:05,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197278866] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:05,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:05,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-10-13 12:37:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118598528] [2024-10-13 12:37:05,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:05,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:37:05,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:37:05,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:37:06,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:37:06,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 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) [2024-10-13 12:37:06,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:06,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:37:06,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:06,924 INFO L124 PetriNetUnfolderBase]: 1341/2363 cut-off events. [2024-10-13 12:37:06,924 INFO L125 PetriNetUnfolderBase]: For 1126/1166 co-relation queries the response was YES. [2024-10-13 12:37:06,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5592 conditions, 2363 events. 1341/2363 cut-off events. For 1126/1166 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 12239 event pairs, 20 based on Foata normal form. 0/2055 useless extension candidates. Maximal degree in co-relation 5555. Up to 595 conditions per place. [2024-10-13 12:37:06,936 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 92 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-10-13 12:37:06,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 100 transitions, 568 flow [2024-10-13 12:37:06,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:37:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:37:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-10-13 12:37:06,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-10-13 12:37:06,938 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 144 flow. Second operand 8 states and 154 transitions. [2024-10-13 12:37:06,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 100 transitions, 568 flow [2024-10-13 12:37:06,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 526 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-10-13 12:37:06,944 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 127 flow [2024-10-13 12:37:06,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=127, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-10-13 12:37:06,944 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2024-10-13 12:37:06,944 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 127 flow [2024-10-13 12:37:06,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 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) [2024-10-13 12:37:06,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:06,945 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:06,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-13 12:37:07,149 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 [2024-10-13 12:37:07,150 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:07,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:07,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1897614679, now seen corresponding path program 1 times [2024-10-13 12:37:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:07,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002691507] [2024-10-13 12:37:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:07,151 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 [2024-10-13 12:37:07,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:07,154 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) [2024-10-13 12:37:07,155 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 [2024-10-13 12:37:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:07,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:37:07,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:07,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:07,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:07,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002691507] [2024-10-13 12:37:07,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002691507] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:07,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:07,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:37:07,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068731162] [2024-10-13 12:37:07,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:07,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:37:07,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:37:07,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:37:07,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:07,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-13 12:37:07,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:07,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:07,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:08,032 INFO L124 PetriNetUnfolderBase]: 1343/2417 cut-off events. [2024-10-13 12:37:08,032 INFO L125 PetriNetUnfolderBase]: For 1125/1125 co-relation queries the response was YES. [2024-10-13 12:37:08,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5782 conditions, 2417 events. 1343/2417 cut-off events. For 1125/1125 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12533 event pairs, 987 based on Foata normal form. 3/2244 useless extension candidates. Maximal degree in co-relation 5747. Up to 1808 conditions per place. [2024-10-13 12:37:08,046 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 52 selfloop transitions, 3 changer transitions 7/64 dead transitions. [2024-10-13 12:37:08,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 354 flow [2024-10-13 12:37:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-13 12:37:08,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5621621621621622 [2024-10-13 12:37:08,048 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 127 flow. Second operand 5 states and 104 transitions. [2024-10-13 12:37:08,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 354 flow [2024-10-13 12:37:08,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 329 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:37:08,052 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 136 flow [2024-10-13 12:37:08,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2024-10-13 12:37:08,053 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2024-10-13 12:37:08,053 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 136 flow [2024-10-13 12:37:08,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-13 12:37:08,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:08,053 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:08,059 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 [2024-10-13 12:37:08,254 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 [2024-10-13 12:37:08,254 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:08,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1210571983, now seen corresponding path program 2 times [2024-10-13 12:37:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:08,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655373712] [2024-10-13 12:37:08,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:37:08,255 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 [2024-10-13 12:37:08,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:08,258 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) [2024-10-13 12:37:08,260 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 [2024-10-13 12:37:08,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 12:37:08,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:08,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:37:08,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:08,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:08,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655373712] [2024-10-13 12:37:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655373712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:08,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:37:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252646301] [2024-10-13 12:37:08,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:08,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:37:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:08,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:37:08,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:37:08,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:08,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-13 12:37:08,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:08,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:08,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:09,075 INFO L124 PetriNetUnfolderBase]: 1344/2410 cut-off events. [2024-10-13 12:37:09,075 INFO L125 PetriNetUnfolderBase]: For 1587/1596 co-relation queries the response was YES. [2024-10-13 12:37:09,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6161 conditions, 2410 events. 1344/2410 cut-off events. For 1587/1596 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12970 event pairs, 966 based on Foata normal form. 1/2235 useless extension candidates. Maximal degree in co-relation 6125. Up to 1751 conditions per place. [2024-10-13 12:37:09,089 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 58 selfloop transitions, 3 changer transitions 9/72 dead transitions. [2024-10-13 12:37:09,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 430 flow [2024-10-13 12:37:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-10-13 12:37:09,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5783783783783784 [2024-10-13 12:37:09,092 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 136 flow. Second operand 5 states and 107 transitions. [2024-10-13 12:37:09,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 430 flow [2024-10-13 12:37:09,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 410 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-13 12:37:09,096 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 148 flow [2024-10-13 12:37:09,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2024-10-13 12:37:09,098 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-10-13 12:37:09,098 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 148 flow [2024-10-13 12:37:09,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-13 12:37:09,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:09,099 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:09,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-13 12:37:09,302 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 [2024-10-13 12:37:09,303 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:09,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1475320693, now seen corresponding path program 3 times [2024-10-13 12:37:09,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:09,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162939026] [2024-10-13 12:37:09,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:37:09,303 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 [2024-10-13 12:37:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:09,305 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) [2024-10-13 12:37:09,306 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 [2024-10-13 12:37:09,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 12:37:09,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:09,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:37:09,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:09,733 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:09,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:09,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162939026] [2024-10-13 12:37:09,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162939026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:09,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:09,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:37:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698065290] [2024-10-13 12:37:09,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:09,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:37:09,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:37:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:37:09,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:09,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-13 12:37:09,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:09,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:09,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:10,262 INFO L124 PetriNetUnfolderBase]: 1414/2534 cut-off events. [2024-10-13 12:37:10,262 INFO L125 PetriNetUnfolderBase]: For 1807/1807 co-relation queries the response was YES. [2024-10-13 12:37:10,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6895 conditions, 2534 events. 1414/2534 cut-off events. For 1807/1807 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 13257 event pairs, 996 based on Foata normal form. 3/2537 useless extension candidates. Maximal degree in co-relation 6857. Up to 1819 conditions per place. [2024-10-13 12:37:10,276 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 55 selfloop transitions, 7 changer transitions 5/69 dead transitions. [2024-10-13 12:37:10,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 416 flow [2024-10-13 12:37:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-10-13 12:37:10,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5891891891891892 [2024-10-13 12:37:10,278 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 148 flow. Second operand 5 states and 109 transitions. [2024-10-13 12:37:10,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 416 flow [2024-10-13 12:37:10,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 394 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-13 12:37:10,282 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 206 flow [2024-10-13 12:37:10,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2024-10-13 12:37:10,283 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-10-13 12:37:10,283 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 206 flow [2024-10-13 12:37:10,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-13 12:37:10,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:10,283 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:10,288 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 [2024-10-13 12:37:10,483 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 [2024-10-13 12:37:10,484 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:10,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1520473101, now seen corresponding path program 4 times [2024-10-13 12:37:10,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:10,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893064246] [2024-10-13 12:37:10,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:37:10,485 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 [2024-10-13 12:37:10,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:10,486 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) [2024-10-13 12:37:10,487 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 [2024-10-13 12:37:10,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:37:10,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:10,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:37:10,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:10,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:10,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:10,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893064246] [2024-10-13 12:37:10,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893064246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:10,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:10,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:37:10,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196173891] [2024-10-13 12:37:10,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:10,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:37:10,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:37:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:37:10,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:10,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-13 12:37:10,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:10,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:10,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:11,409 INFO L124 PetriNetUnfolderBase]: 1412/2519 cut-off events. [2024-10-13 12:37:11,409 INFO L125 PetriNetUnfolderBase]: For 2717/2726 co-relation queries the response was YES. [2024-10-13 12:37:11,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7073 conditions, 2519 events. 1412/2519 cut-off events. For 2717/2726 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13385 event pairs, 968 based on Foata normal form. 3/2335 useless extension candidates. Maximal degree in co-relation 7033. Up to 1761 conditions per place. [2024-10-13 12:37:11,426 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 58 selfloop transitions, 10 changer transitions 5/75 dead transitions. [2024-10-13 12:37:11,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 498 flow [2024-10-13 12:37:11,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-10-13 12:37:11,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-13 12:37:11,428 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 206 flow. Second operand 5 states and 111 transitions. [2024-10-13 12:37:11,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 498 flow [2024-10-13 12:37:11,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:37:11,433 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 291 flow [2024-10-13 12:37:11,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2024-10-13 12:37:11,433 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-10-13 12:37:11,433 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 291 flow [2024-10-13 12:37:11,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-10-13 12:37:11,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:11,434 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:11,440 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 [2024-10-13 12:37:11,638 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 [2024-10-13 12:37:11,638 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:11,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2117202392, now seen corresponding path program 2 times [2024-10-13 12:37:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:11,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110555167] [2024-10-13 12:37:11,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:37:11,639 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 [2024-10-13 12:37:11,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:11,641 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) [2024-10-13 12:37:11,642 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 [2024-10-13 12:37:11,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:37:11,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:11,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 12:37:11,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:11,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 12:37:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:11,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:12,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:12,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110555167] [2024-10-13 12:37:12,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110555167] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:12,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:12,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-10-13 12:37:12,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087926838] [2024-10-13 12:37:12,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:12,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:37:12,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:12,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:37:12,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:37:12,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-13 12:37:12,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 291 flow. Second operand has 13 states, 13 states have (on average 12.076923076923077) internal successors, (157), 13 states have internal predecessors, (157), 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) [2024-10-13 12:37:12,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:12,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-13 12:37:12,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:13,486 INFO L124 PetriNetUnfolderBase]: 1306/2336 cut-off events. [2024-10-13 12:37:13,486 INFO L125 PetriNetUnfolderBase]: For 3989/3989 co-relation queries the response was YES. [2024-10-13 12:37:13,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 2336 events. 1306/2336 cut-off events. For 3989/3989 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 11795 event pairs, 109 based on Foata normal form. 0/2193 useless extension candidates. Maximal degree in co-relation 6868. Up to 653 conditions per place. [2024-10-13 12:37:13,515 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 89 selfloop transitions, 9 changer transitions 1/100 dead transitions. [2024-10-13 12:37:13,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 739 flow [2024-10-13 12:37:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:37:13,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:37:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-10-13 12:37:13,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-10-13 12:37:13,517 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 291 flow. Second operand 8 states and 147 transitions. [2024-10-13 12:37:13,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 739 flow [2024-10-13 12:37:13,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 703 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-13 12:37:13,526 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 268 flow [2024-10-13 12:37:13,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=268, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2024-10-13 12:37:13,526 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2024-10-13 12:37:13,526 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 268 flow [2024-10-13 12:37:13,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.076923076923077) internal successors, (157), 13 states have internal predecessors, (157), 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) [2024-10-13 12:37:13,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:13,527 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:13,532 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 (18)] Forceful destruction successful, exit code 0 [2024-10-13 12:37:13,727 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 [2024-10-13 12:37:13,727 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:13,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:13,728 INFO L85 PathProgramCache]: Analyzing trace with hash -868961125, now seen corresponding path program 1 times [2024-10-13 12:37:13,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:13,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932033974] [2024-10-13 12:37:13,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:13,728 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 [2024-10-13 12:37:13,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:13,731 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) [2024-10-13 12:37:13,733 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 [2024-10-13 12:37:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:13,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:37:13,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:13,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:13,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:13,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932033974] [2024-10-13 12:37:13,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932033974] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 12:37:13,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 12:37:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 12:37:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501021911] [2024-10-13 12:37:13,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:13,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:13,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:37:14,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:14,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:14,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:14,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:14,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:14,467 INFO L124 PetriNetUnfolderBase]: 1444/2573 cut-off events. [2024-10-13 12:37:14,467 INFO L125 PetriNetUnfolderBase]: For 3413/3413 co-relation queries the response was YES. [2024-10-13 12:37:14,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7572 conditions, 2573 events. 1444/2573 cut-off events. For 3413/3413 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 13681 event pairs, 77 based on Foata normal form. 33/2606 useless extension candidates. Maximal degree in co-relation 7530. Up to 1419 conditions per place. [2024-10-13 12:37:14,481 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 69 selfloop transitions, 23 changer transitions 4/97 dead transitions. [2024-10-13 12:37:14,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 751 flow [2024-10-13 12:37:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:37:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:37:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-10-13 12:37:14,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528957528957529 [2024-10-13 12:37:14,484 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 268 flow. Second operand 7 states and 137 transitions. [2024-10-13 12:37:14,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 751 flow [2024-10-13 12:37:14,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 718 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:37:14,490 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 462 flow [2024-10-13 12:37:14,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=462, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-13 12:37:14,491 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2024-10-13 12:37:14,491 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 462 flow [2024-10-13 12:37:14,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:14,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:14,491 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:14,496 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 [2024-10-13 12:37:14,691 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 [2024-10-13 12:37:14,692 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:14,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash -871274672, now seen corresponding path program 1 times [2024-10-13 12:37:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:14,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588329360] [2024-10-13 12:37:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:14,693 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 [2024-10-13 12:37:14,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:14,694 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) [2024-10-13 12:37:14,696 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 [2024-10-13 12:37:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:14,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:37:14,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:14,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:14,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:14,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588329360] [2024-10-13 12:37:14,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588329360] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 12:37:14,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 12:37:14,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 12:37:14,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774245162] [2024-10-13 12:37:14,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:14,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:14,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:14,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:14,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:37:14,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:14,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:14,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:14,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:14,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:15,398 INFO L124 PetriNetUnfolderBase]: 1573/2792 cut-off events. [2024-10-13 12:37:15,399 INFO L125 PetriNetUnfolderBase]: For 6462/6462 co-relation queries the response was YES. [2024-10-13 12:37:15,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9181 conditions, 2792 events. 1573/2792 cut-off events. For 6462/6462 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 14704 event pairs, 217 based on Foata normal form. 30/2822 useless extension candidates. Maximal degree in co-relation 9137. Up to 1417 conditions per place. [2024-10-13 12:37:15,414 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 77 selfloop transitions, 35 changer transitions 4/117 dead transitions. [2024-10-13 12:37:15,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 1064 flow [2024-10-13 12:37:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:37:15,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:37:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-10-13 12:37:15,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-10-13 12:37:15,416 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 462 flow. Second operand 7 states and 134 transitions. [2024-10-13 12:37:15,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 1064 flow [2024-10-13 12:37:15,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 117 transitions, 1028 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-10-13 12:37:15,433 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 751 flow [2024-10-13 12:37:15,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=751, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-10-13 12:37:15,434 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2024-10-13 12:37:15,434 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 751 flow [2024-10-13 12:37:15,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:15,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:15,435 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:15,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-10-13 12:37:15,635 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 [2024-10-13 12:37:15,635 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:15,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:15,636 INFO L85 PathProgramCache]: Analyzing trace with hash 15153898, now seen corresponding path program 2 times [2024-10-13 12:37:15,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:15,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942288231] [2024-10-13 12:37:15,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:37:15,636 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 [2024-10-13 12:37:15,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:15,640 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) [2024-10-13 12:37:15,641 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 [2024-10-13 12:37:15,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:37:15,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:15,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:37:15,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:15,890 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:15,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:15,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942288231] [2024-10-13 12:37:15,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942288231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:15,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:15,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:37:15,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348173316] [2024-10-13 12:37:15,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:15,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:15,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:37:15,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:15,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 751 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:15,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:15,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:15,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:16,350 INFO L124 PetriNetUnfolderBase]: 1575/2809 cut-off events. [2024-10-13 12:37:16,350 INFO L125 PetriNetUnfolderBase]: For 10361/10361 co-relation queries the response was YES. [2024-10-13 12:37:16,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10130 conditions, 2809 events. 1575/2809 cut-off events. For 10361/10361 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 15332 event pairs, 963 based on Foata normal form. 6/2815 useless extension candidates. Maximal degree in co-relation 10081. Up to 1877 conditions per place. [2024-10-13 12:37:16,362 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 93 selfloop transitions, 18 changer transitions 1/113 dead transitions. [2024-10-13 12:37:16,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 113 transitions, 1170 flow [2024-10-13 12:37:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-10-13 12:37:16,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-10-13 12:37:16,364 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 751 flow. Second operand 5 states and 110 transitions. [2024-10-13 12:37:16,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 113 transitions, 1170 flow [2024-10-13 12:37:16,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 1130 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-10-13 12:37:16,391 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 793 flow [2024-10-13 12:37:16,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=793, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2024-10-13 12:37:16,392 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2024-10-13 12:37:16,392 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 793 flow [2024-10-13 12:37:16,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:16,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:16,393 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:16,400 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 (21)] Forceful destruction successful, exit code 0 [2024-10-13 12:37:16,593 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 [2024-10-13 12:37:16,593 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:16,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash 564211948, now seen corresponding path program 3 times [2024-10-13 12:37:16,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:16,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234834442] [2024-10-13 12:37:16,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:37:16,594 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 [2024-10-13 12:37:16,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:16,596 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) [2024-10-13 12:37:16,597 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 [2024-10-13 12:37:16,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:37:16,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:16,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:37:16,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:16,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:16,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234834442] [2024-10-13 12:37:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234834442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:16,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:16,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:37:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522176118] [2024-10-13 12:37:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:16,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:16,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:37:16,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:16,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 793 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:16,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:16,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:16,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:17,338 INFO L124 PetriNetUnfolderBase]: 1695/3001 cut-off events. [2024-10-13 12:37:17,339 INFO L125 PetriNetUnfolderBase]: For 11247/11247 co-relation queries the response was YES. [2024-10-13 12:37:17,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10845 conditions, 3001 events. 1695/3001 cut-off events. For 11247/11247 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16535 event pairs, 967 based on Foata normal form. 30/3031 useless extension candidates. Maximal degree in co-relation 10793. Up to 1883 conditions per place. [2024-10-13 12:37:17,352 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 86 selfloop transitions, 35 changer transitions 8/130 dead transitions. [2024-10-13 12:37:17,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 1328 flow [2024-10-13 12:37:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:37:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:37:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-10-13 12:37:17,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2024-10-13 12:37:17,354 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 793 flow. Second operand 6 states and 135 transitions. [2024-10-13 12:37:17,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 1328 flow [2024-10-13 12:37:17,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 130 transitions, 1293 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 12:37:17,383 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 1041 flow [2024-10-13 12:37:17,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1041, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-10-13 12:37:17,384 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2024-10-13 12:37:17,384 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 1041 flow [2024-10-13 12:37:17,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:17,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:17,384 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:17,390 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 [2024-10-13 12:37:17,585 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 [2024-10-13 12:37:17,585 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:17,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1092232231, now seen corresponding path program 2 times [2024-10-13 12:37:17,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:17,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114289713] [2024-10-13 12:37:17,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:37:17,586 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 [2024-10-13 12:37:17,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:17,587 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) [2024-10-13 12:37:17,589 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 [2024-10-13 12:37:17,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:37:17,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:17,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:37:17,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:17,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:17,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:17,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114289713] [2024-10-13 12:37:17,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114289713] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:17,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:17,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-13 12:37:17,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176266661] [2024-10-13 12:37:17,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:17,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 12:37:17,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:17,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 12:37:17,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 12:37:17,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:17,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 1041 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2024-10-13 12:37:17,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:17,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:17,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:18,573 INFO L124 PetriNetUnfolderBase]: 1941/3422 cut-off events. [2024-10-13 12:37:18,573 INFO L125 PetriNetUnfolderBase]: For 14830/14830 co-relation queries the response was YES. [2024-10-13 12:37:18,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12847 conditions, 3422 events. 1941/3422 cut-off events. For 14830/14830 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 19140 event pairs, 278 based on Foata normal form. 33/3455 useless extension candidates. Maximal degree in co-relation 12791. Up to 1167 conditions per place. [2024-10-13 12:37:18,592 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 85 selfloop transitions, 81 changer transitions 10/177 dead transitions. [2024-10-13 12:37:18,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 177 transitions, 1864 flow [2024-10-13 12:37:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:37:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:37:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-10-13 12:37:18,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5356265356265356 [2024-10-13 12:37:18,594 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 1041 flow. Second operand 11 states and 218 transitions. [2024-10-13 12:37:18,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 177 transitions, 1864 flow [2024-10-13 12:37:18,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 177 transitions, 1819 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-13 12:37:18,641 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 1548 flow [2024-10-13 12:37:18,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1548, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2024-10-13 12:37:18,641 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2024-10-13 12:37:18,642 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 1548 flow [2024-10-13 12:37:18,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2024-10-13 12:37:18,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:18,642 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:18,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2024-10-13 12:37:18,843 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 [2024-10-13 12:37:18,843 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:18,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:18,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1420375102, now seen corresponding path program 4 times [2024-10-13 12:37:18,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:18,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471984084] [2024-10-13 12:37:18,844 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:37:18,844 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 [2024-10-13 12:37:18,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:18,845 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) [2024-10-13 12:37:18,848 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 [2024-10-13 12:37:18,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:37:18,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:18,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:37:18,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:19,069 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:19,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:19,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471984084] [2024-10-13 12:37:19,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471984084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:19,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:19,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:37:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159972169] [2024-10-13 12:37:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:19,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:19,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:19,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:37:19,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:19,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 1548 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:19,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:19,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:19,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:19,612 INFO L124 PetriNetUnfolderBase]: 1936/3426 cut-off events. [2024-10-13 12:37:19,613 INFO L125 PetriNetUnfolderBase]: For 19530/19530 co-relation queries the response was YES. [2024-10-13 12:37:19,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14105 conditions, 3426 events. 1936/3426 cut-off events. For 19530/19530 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 19078 event pairs, 1129 based on Foata normal form. 6/3432 useless extension candidates. Maximal degree in co-relation 14044. Up to 2120 conditions per place. [2024-10-13 12:37:19,629 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 123 selfloop transitions, 22 changer transitions 1/147 dead transitions. [2024-10-13 12:37:19,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 147 transitions, 2009 flow [2024-10-13 12:37:19,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-13 12:37:19,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5837837837837838 [2024-10-13 12:37:19,631 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 1548 flow. Second operand 5 states and 108 transitions. [2024-10-13 12:37:19,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 147 transitions, 2009 flow [2024-10-13 12:37:19,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1870 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-10-13 12:37:19,687 INFO L231 Difference]: Finished difference. Result has 102 places, 119 transitions, 1511 flow [2024-10-13 12:37:19,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1511, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2024-10-13 12:37:19,687 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2024-10-13 12:37:19,687 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 1511 flow [2024-10-13 12:37:19,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:19,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:19,688 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:19,692 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 [2024-10-13 12:37:19,888 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 [2024-10-13 12:37:19,888 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:19,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 954085046, now seen corresponding path program 5 times [2024-10-13 12:37:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324525916] [2024-10-13 12:37:19,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:37:19,890 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 [2024-10-13 12:37:19,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:19,891 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) [2024-10-13 12:37:19,892 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 [2024-10-13 12:37:19,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-13 12:37:19,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:20,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:37:20,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:20,071 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:20,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324525916] [2024-10-13 12:37:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324525916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:20,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:20,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:37:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313112397] [2024-10-13 12:37:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:20,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:37:20,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:20,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 1511 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:20,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:20,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:20,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:20,653 INFO L124 PetriNetUnfolderBase]: 1920/3373 cut-off events. [2024-10-13 12:37:20,653 INFO L125 PetriNetUnfolderBase]: For 16699/16699 co-relation queries the response was YES. [2024-10-13 12:37:20,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13394 conditions, 3373 events. 1920/3373 cut-off events. For 16699/16699 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 18528 event pairs, 995 based on Foata normal form. 30/3403 useless extension candidates. Maximal degree in co-relation 13335. Up to 1837 conditions per place. [2024-10-13 12:37:20,667 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 121 selfloop transitions, 36 changer transitions 9/167 dead transitions. [2024-10-13 12:37:20,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 167 transitions, 2156 flow [2024-10-13 12:37:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:37:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:37:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-10-13 12:37:20,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-13 12:37:20,669 INFO L175 Difference]: Start difference. First operand has 102 places, 119 transitions, 1511 flow. Second operand 7 states and 148 transitions. [2024-10-13 12:37:20,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 167 transitions, 2156 flow [2024-10-13 12:37:20,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 2116 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 12:37:20,716 INFO L231 Difference]: Finished difference. Result has 109 places, 129 transitions, 1741 flow [2024-10-13 12:37:20,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1741, PETRI_PLACES=109, PETRI_TRANSITIONS=129} [2024-10-13 12:37:20,716 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2024-10-13 12:37:20,716 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 129 transitions, 1741 flow [2024-10-13 12:37:20,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:20,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:20,717 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:20,723 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 [2024-10-13 12:37:20,917 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 [2024-10-13 12:37:20,917 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:20,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:20,918 INFO L85 PathProgramCache]: Analyzing trace with hash -35052973, now seen corresponding path program 3 times [2024-10-13 12:37:20,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:20,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191396206] [2024-10-13 12:37:20,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:37:20,919 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 [2024-10-13 12:37:20,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:20,920 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) [2024-10-13 12:37:20,921 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 (26)] Waiting until timeout for monitored process [2024-10-13 12:37:21,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:37:21,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:21,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:37:21,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:21,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:21,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:21,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191396206] [2024-10-13 12:37:21,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191396206] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 12:37:21,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 12:37:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-10-13 12:37:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773582110] [2024-10-13 12:37:21,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:21,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:21,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:21,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-13 12:37:21,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-13 12:37:21,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 129 transitions, 1741 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:21,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:21,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-13 12:37:21,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:21,607 INFO L124 PetriNetUnfolderBase]: 1858/3251 cut-off events. [2024-10-13 12:37:21,608 INFO L125 PetriNetUnfolderBase]: For 16537/16537 co-relation queries the response was YES. [2024-10-13 12:37:21,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12983 conditions, 3251 events. 1858/3251 cut-off events. For 16537/16537 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17628 event pairs, 874 based on Foata normal form. 33/3284 useless extension candidates. Maximal degree in co-relation 12921. Up to 1809 conditions per place. [2024-10-13 12:37:21,623 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 87 selfloop transitions, 53 changer transitions 6/147 dead transitions. [2024-10-13 12:37:21,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 147 transitions, 2052 flow [2024-10-13 12:37:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-10-13 12:37:21,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-10-13 12:37:21,624 INFO L175 Difference]: Start difference. First operand has 109 places, 129 transitions, 1741 flow. Second operand 5 states and 105 transitions. [2024-10-13 12:37:21,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 147 transitions, 2052 flow [2024-10-13 12:37:21,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 147 transitions, 1928 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-10-13 12:37:21,663 INFO L231 Difference]: Finished difference. Result has 102 places, 126 transitions, 1672 flow [2024-10-13 12:37:21,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1672, PETRI_PLACES=102, PETRI_TRANSITIONS=126} [2024-10-13 12:37:21,664 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2024-10-13 12:37:21,664 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 126 transitions, 1672 flow [2024-10-13 12:37:21,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:21,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:21,665 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:21,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2024-10-13 12:37:21,865 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 [2024-10-13 12:37:21,866 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-13 12:37:21,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:21,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1588732548, now seen corresponding path program 1 times [2024-10-13 12:37:21,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:21,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057881414] [2024-10-13 12:37:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:21,867 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 [2024-10-13 12:37:21,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:21,868 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) [2024-10-13 12:37:21,869 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 [2024-10-13 12:37:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:21,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 12:37:21,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:22,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:37:22,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 425 treesize of output 161 [2024-10-13 12:37:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:23,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:26,279 INFO L349 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2024-10-13 12:37:26,279 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 590 treesize of output 284 [2024-10-13 12:37:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 12:37:59,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:59,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057881414] [2024-10-13 12:37:59,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057881414] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:59,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-10-13 12:37:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211588833] [2024-10-13 12:37:59,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:59,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:37:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:37:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=190, Unknown=4, NotChecked=0, Total=240 [2024-10-13 12:38:04,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:38:06,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:38:10,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]