./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.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 cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:23:47,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:23:47,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:23:47,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:23:47,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:23:47,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:23:47,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:23:47,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:23:47,307 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:23:47,308 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:23:47,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:23:47,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:23:47,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:23:47,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:23:47,310 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:23:47,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:23:47,310 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:23:47,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:23:47,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:23:47,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:23:47,311 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:23:47,312 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:23:47,312 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:23:47,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:23:47,312 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:23:47,312 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:23:47,313 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:23:47,313 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:23:47,313 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:23:47,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:23:47,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:23:47,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:23:47,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:23:47,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:23:47,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:23:47,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:23:47,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:23:47,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:23:47,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:23:47,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:23:47,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:23:47,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:23:47,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2024-10-24 19:23:47,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:23:47,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:23:47,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:23:47,563 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:23:47,564 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:23:47,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-24 19:23:48,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:23:48,896 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:23:48,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-24 19:23:48,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0117e6f48/bea4df4ac8cb4154809e4bcfc6b9ec7d/FLAG3ad470c81 [2024-10-24 19:23:49,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0117e6f48/bea4df4ac8cb4154809e4bcfc6b9ec7d [2024-10-24 19:23:49,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:23:49,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:23:49,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:23:49,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:23:49,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:23:49,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:23:49" (1/1) ... [2024-10-24 19:23:49,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430c5059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:49, skipping insertion in model container [2024-10-24 19:23:49,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:23:49" (1/1) ... [2024-10-24 19:23:49,349 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:23:49,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:23:49,536 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-24 19:23:49,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f9ffb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:49, skipping insertion in model container [2024-10-24 19:23:49,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:23:49,538 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:23:49,539 INFO L158 Benchmark]: Toolchain (without parser) took 212.96ms. Allocated memory is still 201.3MB. Free memory was 150.6MB in the beginning and 138.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:23:49,539 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 100.7MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:23:49,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.64ms. Allocated memory is still 201.3MB. Free memory was 150.0MB in the beginning and 138.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:23:49,541 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 100.7MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.64ms. Allocated memory is still 201.3MB. Free memory was 150.0MB in the beginning and 138.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 101]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.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 cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:23:51,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:23:51,204 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:23:51,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:23:51,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:23:51,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:23:51,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:23:51,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:23:51,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:23:51,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:23:51,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:23:51,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:23:51,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:23:51,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:23:51,233 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:23:51,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:23:51,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:23:51,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:23:51,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:23:51,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:23:51,234 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:23:51,238 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:23:51,238 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:23:51,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:23:51,239 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:23:51,239 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:23:51,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:23:51,239 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:23:51,239 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:23:51,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:23:51,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:23:51,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:23:51,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:23:51,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:23:51,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:23:51,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:23:51,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:23:51,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:23:51,241 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:23:51,241 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:23:51,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:23:51,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:23:51,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:23:51,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:23:51,246 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:23:51,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2024-10-24 19:23:51,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:23:51,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:23:51,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:23:51,514 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:23:51,515 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:23:51,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-24 19:23:52,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:23:52,932 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:23:52,933 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-24 19:23:52,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b0888daf/0ba42bf929a74553a3de225e1681f145/FLAG7e2f8e72a [2024-10-24 19:23:52,949 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b0888daf/0ba42bf929a74553a3de225e1681f145 [2024-10-24 19:23:52,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:23:52,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:23:52,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:23:52,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:23:52,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:23:52,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:23:52" (1/1) ... [2024-10-24 19:23:52,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436c40f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:52, skipping insertion in model container [2024-10-24 19:23:52,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:23:52" (1/1) ... [2024-10-24 19:23:52,977 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:23:53,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:23:53,176 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:23:53,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:23:53,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:23:53,207 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:23:53,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:23:53,253 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:23:53,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53 WrapperNode [2024-10-24 19:23:53,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:23:53,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:23:53,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:23:53,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:23:53,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,298 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 14, calls inlined = 20, statements flattened = 211 [2024-10-24 19:23:53,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:23:53,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:23:53,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:23:53,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:23:53,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,343 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-24 19:23:53,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:23:53,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:23:53,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:23:53,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:23:53,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (1/1) ... [2024-10-24 19:23:53,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:23:53,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:23:53,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:23:53,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:23:53,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:23:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:23:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:23:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:23:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:23:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:23:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:23:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:23:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:23:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 19:23:53,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 19:23:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:23:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:23:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:23:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:23:53,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:23:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:23:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:23:53,439 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:23:53,536 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:23:53,537 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:23:53,967 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:23:53,967 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:23:54,259 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:23:54,259 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 19:23:54,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:23:54 BoogieIcfgContainer [2024-10-24 19:23:54,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:23:54,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:23:54,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:23:54,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:23:54,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:23:52" (1/3) ... [2024-10-24 19:23:54,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc85708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:23:54, skipping insertion in model container [2024-10-24 19:23:54,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:53" (2/3) ... [2024-10-24 19:23:54,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc85708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:23:54, skipping insertion in model container [2024-10-24 19:23:54,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:23:54" (3/3) ... [2024-10-24 19:23:54,267 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2024-10-24 19:23:54,279 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:23:54,279 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-24 19:23:54,280 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:23:54,355 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 19:23:54,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 137 flow [2024-10-24 19:23:54,408 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-10-24 19:23:54,408 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 19:23:54,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 6/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 148 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-10-24 19:23:54,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 58 transitions, 137 flow [2024-10-24 19:23:54,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 126 flow [2024-10-24 19:23:54,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:23:54,431 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;@191f0868, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:23:54,431 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-10-24 19:23:54,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:23:54,434 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:23:54,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:23:54,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:54,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:23:54,435 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:23:54,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash 709843, now seen corresponding path program 1 times [2024-10-24 19:23:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:23:54,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614790763] [2024-10-24 19:23:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:54,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:54,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:23:54,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:23:54,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 19:23:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:54,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:23:54,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:54,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:23:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:54,571 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:23:54,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:23:54,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614790763] [2024-10-24 19:23:54,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614790763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:54,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:23:54,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:23:54,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052777750] [2024-10-24 19:23:54,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:54,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:23:54,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:23:54,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:23:54,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:23:54,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-24 19:23:54,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:54,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:54,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-24 19:23:54,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:54,952 INFO L124 PetriNetUnfolderBase]: 1076/1573 cut-off events. [2024-10-24 19:23:54,952 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-24 19:23:54,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1573 events. 1076/1573 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6790 event pairs, 723 based on Foata normal form. 1/1429 useless extension candidates. Maximal degree in co-relation 2878. Up to 1475 conditions per place. [2024-10-24 19:23:54,967 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 30 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-10-24 19:23:54,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 176 flow [2024-10-24 19:23:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:23:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:23:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-24 19:23:54,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2024-10-24 19:23:54,981 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 126 flow. Second operand 3 states and 95 transitions. [2024-10-24 19:23:54,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 176 flow [2024-10-24 19:23:54,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 164 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 19:23:54,988 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 104 flow [2024-10-24 19:23:54,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-10-24 19:23:54,993 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -11 predicate places. [2024-10-24 19:23:54,995 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 104 flow [2024-10-24 19:23:54,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:54,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:54,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:23:54,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 19:23:55,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:55,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:23:55,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:55,197 INFO L85 PathProgramCache]: Analyzing trace with hash 709844, now seen corresponding path program 1 times [2024-10-24 19:23:55,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:23:55,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628677241] [2024-10-24 19:23:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:55,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:55,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:23:55,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:23:55,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 19:23:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:55,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:23:55,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:55,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:23:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:55,332 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:23:55,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:23:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628677241] [2024-10-24 19:23:55,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628677241] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:55,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:23:55,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:23:55,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36472084] [2024-10-24 19:23:55,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:55,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:23:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:23:55,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:23:55,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:23:55,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-24 19:23:55,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-10-24 19:23:55,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:55,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-24 19:23:55,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:55,660 INFO L124 PetriNetUnfolderBase]: 1077/1576 cut-off events. [2024-10-24 19:23:55,660 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-24 19:23:55,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3094 conditions, 1576 events. 1077/1576 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6791 event pairs, 723 based on Foata normal form. 0/1431 useless extension candidates. Maximal degree in co-relation 3072. Up to 1480 conditions per place. [2024-10-24 19:23:55,667 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 32 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-10-24 19:23:55,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 184 flow [2024-10-24 19:23:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:23:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:23:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-24 19:23:55,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4870689655172414 [2024-10-24 19:23:55,669 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 104 flow. Second operand 4 states and 113 transitions. [2024-10-24 19:23:55,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 184 flow [2024-10-24 19:23:55,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:23:55,671 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 127 flow [2024-10-24 19:23:55,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2024-10-24 19:23:55,673 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2024-10-24 19:23:55,673 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 127 flow [2024-10-24 19:23:55,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-10-24 19:23:55,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:55,673 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:23:55,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-24 19:23:55,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:55,876 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:23:55,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash 682182813, now seen corresponding path program 1 times [2024-10-24 19:23:55,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:23:55,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916063909] [2024-10-24 19:23:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:55,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:55,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:23:55,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:23:55,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-24 19:23:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:55,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:23:55,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:55,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:23:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:56,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:23:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:56,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:23:56,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916063909] [2024-10-24 19:23:56,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916063909] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:23:56,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:23:56,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:23:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960516971] [2024-10-24 19:23:56,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:23:56,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:23:56,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:23:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:23:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:23:56,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-24 19:23:56,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 127 flow. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:56,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:56,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-24 19:23:56,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:57,071 INFO L124 PetriNetUnfolderBase]: 1080/1585 cut-off events. [2024-10-24 19:23:57,071 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-24 19:23:57,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1585 events. 1080/1585 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6851 event pairs, 723 based on Foata normal form. 0/1436 useless extension candidates. Maximal degree in co-relation 3079. Up to 1483 conditions per place. [2024-10-24 19:23:57,078 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 32 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-10-24 19:23:57,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 253 flow [2024-10-24 19:23:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:23:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:23:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-10-24 19:23:57,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2024-10-24 19:23:57,081 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 127 flow. Second operand 10 states and 238 transitions. [2024-10-24 19:23:57,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 253 flow [2024-10-24 19:23:57,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:23:57,083 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 204 flow [2024-10-24 19:23:57,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-10-24 19:23:57,084 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-10-24 19:23:57,085 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 204 flow [2024-10-24 19:23:57,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:57,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:57,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:23:57,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-24 19:23:57,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:57,288 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:23:57,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash -324088423, now seen corresponding path program 1 times [2024-10-24 19:23:57,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:23:57,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911454758] [2024-10-24 19:23:57,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:57,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:57,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:23:57,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:23:57,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-24 19:23:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:57,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:23:57,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:57,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:23:57,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:57,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:23:57,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:23:57,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911454758] [2024-10-24 19:23:57,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911454758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:57,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:23:57,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:23:57,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267579891] [2024-10-24 19:23:57,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:57,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:23:57,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:23:57,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:23:57,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:23:57,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-10-24 19:23:57,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:57,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:57,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-10-24 19:23:57,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:57,565 INFO L124 PetriNetUnfolderBase]: 923/1354 cut-off events. [2024-10-24 19:23:57,565 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 19:23:57,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 1354 events. 923/1354 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5601 event pairs, 608 based on Foata normal form. 0/1283 useless extension candidates. Maximal degree in co-relation 2675. Up to 1265 conditions per place. [2024-10-24 19:23:57,571 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 37 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2024-10-24 19:23:57,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 280 flow [2024-10-24 19:23:57,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:23:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:23:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-10-24 19:23:57,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-10-24 19:23:57,573 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 204 flow. Second operand 4 states and 96 transitions. [2024-10-24 19:23:57,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 280 flow [2024-10-24 19:23:57,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 250 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-24 19:23:57,575 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 176 flow [2024-10-24 19:23:57,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-10-24 19:23:57,575 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2024-10-24 19:23:57,576 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 176 flow [2024-10-24 19:23:57,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:57,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:57,576 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:23:57,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-24 19:23:57,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:57,777 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:23:57,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:57,777 INFO L85 PathProgramCache]: Analyzing trace with hash -324088422, now seen corresponding path program 1 times [2024-10-24 19:23:57,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:23:57,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653747722] [2024-10-24 19:23:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:57,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:57,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:23:57,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:23:57,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-24 19:23:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:57,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 19:23:57,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:57,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:23:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:57,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:23:57,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:23:57,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653747722] [2024-10-24 19:23:57,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653747722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:57,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:23:57,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:23:57,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508671138] [2024-10-24 19:23:57,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:57,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:23:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:23:57,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:23:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:23:58,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-10-24 19:23:58,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:58,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:58,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-10-24 19:23:58,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:58,383 INFO L124 PetriNetUnfolderBase]: 1842/2721 cut-off events. [2024-10-24 19:23:58,383 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 19:23:58,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 2721 events. 1842/2721 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13123 event pairs, 721 based on Foata normal form. 0/2482 useless extension candidates. Maximal degree in co-relation 5295. Up to 1769 conditions per place. [2024-10-24 19:23:58,396 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 57 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-10-24 19:23:58,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 352 flow [2024-10-24 19:23:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:23:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:23:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-10-24 19:23:58,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2024-10-24 19:23:58,398 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 176 flow. Second operand 5 states and 146 transitions. [2024-10-24 19:23:58,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 352 flow [2024-10-24 19:23:58,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:23:58,400 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 202 flow [2024-10-24 19:23:58,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-10-24 19:23:58,401 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-10-24 19:23:58,401 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 202 flow [2024-10-24 19:23:58,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:58,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:58,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:23:58,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-24 19:23:58,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:58,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:23:58,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2074673395, now seen corresponding path program 1 times [2024-10-24 19:23:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:23:58,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653011154] [2024-10-24 19:23:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:58,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:58,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:23:58,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:23:58,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-24 19:23:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:58,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 19:23:58,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:58,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:23:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:58,793 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:23:58,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:23:58,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653011154] [2024-10-24 19:23:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653011154] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:58,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:23:58,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:23:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011053377] [2024-10-24 19:23:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:58,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:23:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:23:58,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:23:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:23:58,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-10-24 19:23:58,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:58,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:58,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-10-24 19:23:58,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:59,345 INFO L124 PetriNetUnfolderBase]: 3116/4554 cut-off events. [2024-10-24 19:23:59,346 INFO L125 PetriNetUnfolderBase]: For 847/931 co-relation queries the response was YES. [2024-10-24 19:23:59,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9742 conditions, 4554 events. 3116/4554 cut-off events. For 847/931 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22575 event pairs, 1271 based on Foata normal form. 0/4167 useless extension candidates. Maximal degree in co-relation 9709. Up to 2911 conditions per place. [2024-10-24 19:23:59,410 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 60 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-10-24 19:23:59,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 399 flow [2024-10-24 19:23:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:23:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:23:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-10-24 19:23:59,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 19:23:59,413 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 202 flow. Second operand 5 states and 145 transitions. [2024-10-24 19:23:59,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 399 flow [2024-10-24 19:23:59,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 381 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:23:59,415 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 220 flow [2024-10-24 19:23:59,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-10-24 19:23:59,416 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-10-24 19:23:59,416 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 220 flow [2024-10-24 19:23:59,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:59,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:59,417 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:23:59,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-24 19:23:59,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:59,618 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:23:59,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:59,619 INFO L85 PathProgramCache]: Analyzing trace with hash 945751202, now seen corresponding path program 1 times [2024-10-24 19:23:59,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:23:59,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771236016] [2024-10-24 19:23:59,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:59,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:59,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:23:59,622 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:23:59,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-24 19:23:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:59,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 19:23:59,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:59,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:23:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:59,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:23:59,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:23:59,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771236016] [2024-10-24 19:23:59,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771236016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:59,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:23:59,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:23:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347149361] [2024-10-24 19:23:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:59,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:23:59,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:23:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:23:59,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:23:59,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-10-24 19:23:59,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:59,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:59,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-10-24 19:23:59,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:00,424 INFO L124 PetriNetUnfolderBase]: 2722/4238 cut-off events. [2024-10-24 19:24:00,425 INFO L125 PetriNetUnfolderBase]: For 1091/1164 co-relation queries the response was YES. [2024-10-24 19:24:00,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9632 conditions, 4238 events. 2722/4238 cut-off events. For 1091/1164 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 22292 event pairs, 1717 based on Foata normal form. 64/4159 useless extension candidates. Maximal degree in co-relation 9598. Up to 3400 conditions per place. [2024-10-24 19:24:00,445 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 69 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-10-24 19:24:00,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 446 flow [2024-10-24 19:24:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:24:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:24:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-10-24 19:24:00,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5724137931034483 [2024-10-24 19:24:00,466 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 220 flow. Second operand 5 states and 166 transitions. [2024-10-24 19:24:00,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 446 flow [2024-10-24 19:24:00,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 427 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:24:00,469 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 242 flow [2024-10-24 19:24:00,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-10-24 19:24:00,470 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-10-24 19:24:00,470 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 242 flow [2024-10-24 19:24:00,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:00,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:00,470 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:00,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-24 19:24:00,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:00,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:24:00,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:00,673 INFO L85 PathProgramCache]: Analyzing trace with hash 861006720, now seen corresponding path program 1 times [2024-10-24 19:24:00,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:00,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399356499] [2024-10-24 19:24:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:00,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:00,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:00,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-24 19:24:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:00,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:24:00,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:00,746 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:00,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399356499] [2024-10-24 19:24:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399356499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:00,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:00,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:24:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955025425] [2024-10-24 19:24:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:00,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:24:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:00,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:24:00,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:24:00,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-10-24 19:24:00,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:00,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:00,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-10-24 19:24:00,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:01,196 INFO L124 PetriNetUnfolderBase]: 2559/4007 cut-off events. [2024-10-24 19:24:01,197 INFO L125 PetriNetUnfolderBase]: For 2026/2064 co-relation queries the response was YES. [2024-10-24 19:24:01,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9864 conditions, 4007 events. 2559/4007 cut-off events. For 2026/2064 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21842 event pairs, 1622 based on Foata normal form. 1/3960 useless extension candidates. Maximal degree in co-relation 9840. Up to 3400 conditions per place. [2024-10-24 19:24:01,210 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 44 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-10-24 19:24:01,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 310 flow [2024-10-24 19:24:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:24:01,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:24:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-10-24 19:24:01,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-10-24 19:24:01,212 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 242 flow. Second operand 3 states and 94 transitions. [2024-10-24 19:24:01,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 310 flow [2024-10-24 19:24:01,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:24:01,214 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 218 flow [2024-10-24 19:24:01,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-10-24 19:24:01,215 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-10-24 19:24:01,215 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 218 flow [2024-10-24 19:24:01,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:01,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:01,215 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:24:01,218 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 (9)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:01,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:01,418 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:24:01,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1547177592, now seen corresponding path program 2 times [2024-10-24 19:24:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542538092] [2024-10-24 19:24:01,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:01,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:01,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:01,422 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:01,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-24 19:24:01,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:24:01,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:01,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:24:01,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:01,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:01,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:02,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:02,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542538092] [2024-10-24 19:24:02,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542538092] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:02,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:02,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:24:02,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248398582] [2024-10-24 19:24:02,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:02,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:24:02,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:24:02,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:24:02,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-24 19:24:02,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 218 flow. Second operand has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:02,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:02,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-24 19:24:02,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:04,704 INFO L124 PetriNetUnfolderBase]: 2565/4025 cut-off events. [2024-10-24 19:24:04,704 INFO L125 PetriNetUnfolderBase]: For 2062/2100 co-relation queries the response was YES. [2024-10-24 19:24:04,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9931 conditions, 4025 events. 2565/4025 cut-off events. For 2062/2100 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 22040 event pairs, 1622 based on Foata normal form. 6/3977 useless extension candidates. Maximal degree in co-relation 9907. Up to 3401 conditions per place. [2024-10-24 19:24:04,718 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 35 selfloop transitions, 30 changer transitions 0/75 dead transitions. [2024-10-24 19:24:04,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 438 flow [2024-10-24 19:24:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:24:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:24:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 485 transitions. [2024-10-24 19:24:04,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38009404388714735 [2024-10-24 19:24:04,720 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 218 flow. Second operand 22 states and 485 transitions. [2024-10-24 19:24:04,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 438 flow [2024-10-24 19:24:04,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:24:04,724 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 394 flow [2024-10-24 19:24:04,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=394, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-10-24 19:24:04,725 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2024-10-24 19:24:04,725 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 394 flow [2024-10-24 19:24:04,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:04,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:04,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:04,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:04,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:04,929 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:24:04,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:04,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1944605591, now seen corresponding path program 1 times [2024-10-24 19:24:04,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:04,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581317914] [2024-10-24 19:24:04,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:04,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:04,934 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:04,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-24 19:24:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:04,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 19:24:04,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:05,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:05,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:05,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:05,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581317914] [2024-10-24 19:24:05,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581317914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:05,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:05,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-24 19:24:05,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855046480] [2024-10-24 19:24:05,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:05,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:24:05,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:05,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:24:05,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:24:06,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-24 19:24:06,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:06,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:06,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-24 19:24:06,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:09,115 INFO L124 PetriNetUnfolderBase]: 9554/14249 cut-off events. [2024-10-24 19:24:09,115 INFO L125 PetriNetUnfolderBase]: For 8249/8587 co-relation queries the response was YES. [2024-10-24 19:24:09,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35715 conditions, 14249 events. 9554/14249 cut-off events. For 8249/8587 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 85948 event pairs, 3954 based on Foata normal form. 274/14471 useless extension candidates. Maximal degree in co-relation 35661. Up to 2829 conditions per place. [2024-10-24 19:24:09,184 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 195 selfloop transitions, 34 changer transitions 0/239 dead transitions. [2024-10-24 19:24:09,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 239 transitions, 1429 flow [2024-10-24 19:24:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 19:24:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 19:24:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 446 transitions. [2024-10-24 19:24:09,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5492610837438424 [2024-10-24 19:24:09,186 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 394 flow. Second operand 14 states and 446 transitions. [2024-10-24 19:24:09,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 239 transitions, 1429 flow [2024-10-24 19:24:09,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 239 transitions, 1351 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-24 19:24:09,191 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 443 flow [2024-10-24 19:24:09,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=443, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2024-10-24 19:24:09,192 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 35 predicate places. [2024-10-24 19:24:09,192 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 443 flow [2024-10-24 19:24:09,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:09,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:09,193 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:09,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-24 19:24:09,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:09,393 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:24:09,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:09,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2029350073, now seen corresponding path program 1 times [2024-10-24 19:24:09,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:09,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346898842] [2024-10-24 19:24:09,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:09,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:09,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:09,396 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:09,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-24 19:24:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:09,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 19:24:09,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:09,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:09,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:09,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:09,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346898842] [2024-10-24 19:24:09,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346898842] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:09,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:09,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-24 19:24:09,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572979525] [2024-10-24 19:24:09,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:09,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:24:09,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:09,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:24:09,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:24:10,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-10-24 19:24:10,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 443 flow. Second operand has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:10,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:10,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-10-24 19:24:10,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:14,523 INFO L124 PetriNetUnfolderBase]: 25157/35669 cut-off events. [2024-10-24 19:24:14,524 INFO L125 PetriNetUnfolderBase]: For 34937/35713 co-relation queries the response was YES. [2024-10-24 19:24:14,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99687 conditions, 35669 events. 25157/35669 cut-off events. For 34937/35713 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 215018 event pairs, 3961 based on Foata normal form. 2506/38153 useless extension candidates. Maximal degree in co-relation 99638. Up to 7779 conditions per place. [2024-10-24 19:24:14,763 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 308 selfloop transitions, 23 changer transitions 0/339 dead transitions. [2024-10-24 19:24:14,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 339 transitions, 2258 flow [2024-10-24 19:24:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 19:24:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 19:24:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 396 transitions. [2024-10-24 19:24:14,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-10-24 19:24:14,765 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 443 flow. Second operand 12 states and 396 transitions. [2024-10-24 19:24:14,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 339 transitions, 2258 flow [2024-10-24 19:24:14,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 339 transitions, 2248 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:24:14,814 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 537 flow [2024-10-24 19:24:14,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=537, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-10-24 19:24:14,815 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2024-10-24 19:24:14,815 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 537 flow [2024-10-24 19:24:14,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:14,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:14,816 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:14,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-24 19:24:15,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:15,017 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:24:15,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:15,017 INFO L85 PathProgramCache]: Analyzing trace with hash 43009234, now seen corresponding path program 1 times [2024-10-24 19:24:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:15,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412685481] [2024-10-24 19:24:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:15,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:15,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:15,019 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:15,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-24 19:24:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:15,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 19:24:15,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:15,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:15,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:15,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412685481] [2024-10-24 19:24:15,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412685481] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:15,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:15,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-24 19:24:15,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740787369] [2024-10-24 19:24:15,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:15,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:24:15,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:24:15,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:24:16,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-10-24 19:24:16,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 537 flow. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:16,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:16,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-10-24 19:24:16,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:23,642 INFO L124 PetriNetUnfolderBase]: 49925/69751 cut-off events. [2024-10-24 19:24:23,642 INFO L125 PetriNetUnfolderBase]: For 98729/101545 co-relation queries the response was YES. [2024-10-24 19:24:24,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213413 conditions, 69751 events. 49925/69751 cut-off events. For 98729/101545 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 439243 event pairs, 7593 based on Foata normal form. 4452/74167 useless extension candidates. Maximal degree in co-relation 213361. Up to 16701 conditions per place. [2024-10-24 19:24:24,266 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 308 selfloop transitions, 24 changer transitions 0/343 dead transitions. [2024-10-24 19:24:24,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 343 transitions, 2563 flow [2024-10-24 19:24:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:24:24,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:24:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 352 transitions. [2024-10-24 19:24:24,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-10-24 19:24:24,269 INFO L175 Difference]: Start difference. First operand has 103 places, 94 transitions, 537 flow. Second operand 11 states and 352 transitions. [2024-10-24 19:24:24,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 343 transitions, 2563 flow [2024-10-24 19:24:24,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 343 transitions, 2439 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-10-24 19:24:24,362 INFO L231 Difference]: Finished difference. Result has 113 places, 103 transitions, 628 flow [2024-10-24 19:24:24,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=628, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2024-10-24 19:24:24,362 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 55 predicate places. [2024-10-24 19:24:24,363 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 628 flow [2024-10-24 19:24:24,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:24,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:24,363 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:24,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-24 19:24:24,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:24,563 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:24:24,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:24,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1227172411, now seen corresponding path program 1 times [2024-10-24 19:24:24,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:24,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162174235] [2024-10-24 19:24:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:24,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:24,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:24,565 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:24,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-24 19:24:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:24,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:24:24,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:24,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:24,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:24,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162174235] [2024-10-24 19:24:24,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162174235] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:24,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:24,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-24 19:24:24,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763520993] [2024-10-24 19:24:24,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:24,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:24:24,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:24,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:24:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:24:25,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-24 19:24:25,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 628 flow. Second operand has 14 states, 14 states have (on average 21.071428571428573) internal successors, (295), 14 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:25,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:25,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-24 19:24:25,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:31,286 INFO L124 PetriNetUnfolderBase]: 38611/56559 cut-off events. [2024-10-24 19:24:31,286 INFO L125 PetriNetUnfolderBase]: For 93836/94770 co-relation queries the response was YES. [2024-10-24 19:24:31,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182655 conditions, 56559 events. 38611/56559 cut-off events. For 93836/94770 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 372753 event pairs, 20419 based on Foata normal form. 1024/57555 useless extension candidates. Maximal degree in co-relation 182599. Up to 35610 conditions per place. [2024-10-24 19:24:31,876 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 157 selfloop transitions, 26 changer transitions 0/199 dead transitions. [2024-10-24 19:24:31,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 199 transitions, 1507 flow [2024-10-24 19:24:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:24:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:24:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 267 transitions. [2024-10-24 19:24:31,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-10-24 19:24:31,878 INFO L175 Difference]: Start difference. First operand has 113 places, 103 transitions, 628 flow. Second operand 9 states and 267 transitions. [2024-10-24 19:24:31,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 199 transitions, 1507 flow [2024-10-24 19:24:32,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 1435 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-10-24 19:24:32,091 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 648 flow [2024-10-24 19:24:32,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=648, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-10-24 19:24:32,092 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 59 predicate places. [2024-10-24 19:24:32,092 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 648 flow [2024-10-24 19:24:32,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.071428571428573) internal successors, (295), 14 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:32,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:32,093 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:32,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-24 19:24:32,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:32,294 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:24:32,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1785775996, now seen corresponding path program 2 times [2024-10-24 19:24:32,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:32,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480012418] [2024-10-24 19:24:32,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:32,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:32,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:32,296 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:32,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-24 19:24:32,365 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:24:32,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:32,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 19:24:32,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:32,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:32,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:33,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:33,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480012418] [2024-10-24 19:24:33,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480012418] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:33,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:33,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-24 19:24:33,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997452682] [2024-10-24 19:24:33,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:33,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 19:24:33,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:33,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 19:24:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-24 19:24:35,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-24 19:24:35,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 648 flow. Second operand has 16 states, 16 states have (on average 21.125) internal successors, (338), 16 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:35,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:35,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-24 19:24:35,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:54,329 INFO L124 PetriNetUnfolderBase]: 82449/114971 cut-off events. [2024-10-24 19:24:54,330 INFO L125 PetriNetUnfolderBase]: For 183289/189211 co-relation queries the response was YES. [2024-10-24 19:24:55,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376318 conditions, 114971 events. 82449/114971 cut-off events. For 183289/189211 co-relation queries the response was YES. Maximal size of possible extension queue 1840. Compared 754092 event pairs, 24847 based on Foata normal form. 2048/116996 useless extension candidates. Maximal degree in co-relation 376258. Up to 27201 conditions per place. [2024-10-24 19:24:55,571 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 504 selfloop transitions, 47 changer transitions 0/567 dead transitions. [2024-10-24 19:24:55,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 567 transitions, 4096 flow [2024-10-24 19:24:55,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:24:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:24:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 727 transitions. [2024-10-24 19:24:55,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697492163009404 [2024-10-24 19:24:55,574 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 648 flow. Second operand 22 states and 727 transitions. [2024-10-24 19:24:55,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 567 transitions, 4096 flow [2024-10-24 19:24:56,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 567 transitions, 4060 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-24 19:24:56,518 INFO L231 Difference]: Finished difference. Result has 138 places, 119 transitions, 872 flow [2024-10-24 19:24:56,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=872, PETRI_PLACES=138, PETRI_TRANSITIONS=119} [2024-10-24 19:24:56,519 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-10-24 19:24:56,519 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 119 transitions, 872 flow [2024-10-24 19:24:56,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 21.125) internal successors, (338), 16 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:56,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:56,519 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:56,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:56,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:56,719 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-24 19:24:56,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash -373075620, now seen corresponding path program 2 times [2024-10-24 19:24:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020119257] [2024-10-24 19:24:56,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:56,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:56,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:56,721 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:56,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-24 19:24:56,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:24:56,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:56,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 19:24:56,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:56,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 19:24:56,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:56,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020119257] [2024-10-24 19:24:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020119257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:56,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:56,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:24:56,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186032621] [2024-10-24 19:24:56,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:56,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:24:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:24:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:24:57,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-10-24 19:24:57,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 119 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:57,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:57,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-10-24 19:24:57,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand