./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:52:12,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:52:12,543 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:52:12,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:52:12,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:52:12,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:52:12,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:52:12,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:52:12,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:52:12,588 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:52:12,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:52:12,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:52:12,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:52:12,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:52:12,589 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:52:12,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:52:12,590 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:52:12,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:52:12,590 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:52:12,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:52:12,591 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:52:12,595 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:52:12,595 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:52:12,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:52:12,596 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:52:12,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:52:12,598 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:52:12,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:52:12,599 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:52:12,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:52:12,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:52:12,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:52:12,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:52:12,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:52:12,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:52:12,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:52:12,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:52:12,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:52:12,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:52:12,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:52:12,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:52:12,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:52:12,603 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2024-10-11 19:52:12,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:52:12,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:52:12,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:52:12,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:52:12,897 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:52:12,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-10-11 19:52:14,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:52:14,470 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:52:14,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-10-11 19:52:14,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/08fe71b56/1ca5b262b91b447095f262f62f528775/FLAGa5b938903 [2024-10-11 19:52:14,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/08fe71b56/1ca5b262b91b447095f262f62f528775 [2024-10-11 19:52:14,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:52:14,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:52:14,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:52:14,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:52:14,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:52:14,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:52:14" (1/1) ... [2024-10-11 19:52:14,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abc05ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:14, skipping insertion in model container [2024-10-11 19:52:14,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:52:14" (1/1) ... [2024-10-11 19:52:14,904 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:52:15,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:52:15,157 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) [2024-10-11 19:52:15,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b33def5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:15, skipping insertion in model container [2024-10-11 19:52:15,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:52:15,159 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:52:15,160 INFO L158 Benchmark]: Toolchain (without parser) took 292.43ms. Allocated memory is still 205.5MB. Free memory was 137.8MB in the beginning and 125.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:52:15,161 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:52:15,161 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.32ms. Allocated memory is still 205.5MB. Free memory was 137.5MB in the beginning and 125.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:52:15,163 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.32ms. Allocated memory is still 205.5MB. Free memory was 137.5MB in the beginning and 125.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 102]: 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-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:52:17,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:52:17,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:52:17,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:52:17,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:52:17,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:52:17,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:52:17,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:52:17,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:52:17,433 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:52:17,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:52:17,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:52:17,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:52:17,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:52:17,438 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:52:17,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:52:17,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:52:17,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:52:17,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:52:17,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:52:17,440 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:52:17,440 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:52:17,441 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:52:17,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:52:17,441 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:52:17,441 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:52:17,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:52:17,441 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:52:17,442 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:52:17,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:52:17,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:52:17,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:52:17,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:52:17,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:52:17,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:52:17,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:52:17,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:52:17,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:52:17,444 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:52:17,444 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:52:17,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:52:17,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:52:17,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:52:17,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:52:17,447 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:52:17,448 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2024-10-11 19:52:17,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:52:17,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:52:17,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:52:17,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:52:17,795 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:52:17,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-10-11 19:52:19,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:52:19,560 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:52:19,562 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-10-11 19:52:19,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c46b8fa5c/6586f4894cbb4cb0b713e137ff6bb0b7/FLAG2570e952c [2024-10-11 19:52:19,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c46b8fa5c/6586f4894cbb4cb0b713e137ff6bb0b7 [2024-10-11 19:52:19,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:52:19,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:52:19,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:52:19,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:52:19,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:52:19,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65acbcd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19, skipping insertion in model container [2024-10-11 19:52:19,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:52:19,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:52:19,908 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:52:19,915 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:52:19,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:52:19,954 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:52:19,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:52:20,013 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:52:20,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20 WrapperNode [2024-10-11 19:52:20,014 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:52:20,015 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:52:20,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:52:20,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:52:20,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,079 INFO L138 Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 279 [2024-10-11 19:52:20,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:52:20,081 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:52:20,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:52:20,082 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:52:20,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,100 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,145 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 10, 6]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-10-11 19:52:20,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:52:20,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:52:20,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:52:20,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:52:20,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (1/1) ... [2024-10-11 19:52:20,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:52:20,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:52:20,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:52:20,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:52:20,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:52:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-10-11 19:52:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-10-11 19:52:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-10-11 19:52:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:52:20,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:52:20,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-11 19:52:20,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:52:20,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:52:20,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-11 19:52:20,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:52:20,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:52:20,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:52:20,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:52:20,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:52:20,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:52:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:52:20,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-10-11 19:52:20,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-10-11 19:52:20,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-10-11 19:52:20,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:52:20,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:52:20,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-11 19:52:20,298 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:52:20,457 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:52:20,459 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:52:21,193 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:52:21,193 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:52:21,593 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:52:21,594 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 19:52:21,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:52:21 BoogieIcfgContainer [2024-10-11 19:52:21,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:52:21,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:52:21,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:52:21,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:52:21,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:52:19" (1/3) ... [2024-10-11 19:52:21,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717016f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:52:21, skipping insertion in model container [2024-10-11 19:52:21,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:20" (2/3) ... [2024-10-11 19:52:21,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717016f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:52:21, skipping insertion in model container [2024-10-11 19:52:21,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:52:21" (3/3) ... [2024-10-11 19:52:21,604 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2024-10-11 19:52:21,621 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:52:21,621 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-10-11 19:52:21,622 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:52:21,711 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:52:21,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 82 transitions, 178 flow [2024-10-11 19:52:21,793 INFO L124 PetriNetUnfolderBase]: 8/80 cut-off events. [2024-10-11 19:52:21,793 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:52:21,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 8/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 221 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-10-11 19:52:21,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 82 transitions, 178 flow [2024-10-11 19:52:21,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 79 transitions, 170 flow [2024-10-11 19:52:21,812 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:52:21,820 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;@1f2e0fa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:52:21,820 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-10-11 19:52:21,824 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:52:21,824 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:52:21,824 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:52:21,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:21,825 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:52:21,825 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:21,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash 909452, now seen corresponding path program 1 times [2024-10-11 19:52:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:21,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535437562] [2024-10-11 19:52:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:21,840 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 [2024-10-11 19:52:21,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:21,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:21,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:21,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:52:21,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:22,007 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 [2024-10-11 19:52:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:22,025 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:22,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:22,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535437562] [2024-10-11 19:52:22,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535437562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:22,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:22,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:52:22,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496165924] [2024-10-11 19:52:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:22,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:52:22,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:52:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:52:22,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:52:22,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:22,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:22,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:52:22,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:22,460 INFO L124 PetriNetUnfolderBase]: 192/580 cut-off events. [2024-10-11 19:52:22,460 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 19:52:22,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 580 events. 192/580 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3507 event pairs, 113 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 827. Up to 301 conditions per place. [2024-10-11 19:52:22,470 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 32 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-10-11 19:52:22,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 230 flow [2024-10-11 19:52:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:52:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:52:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-10-11 19:52:22,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6869918699186992 [2024-10-11 19:52:22,486 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 170 flow. Second operand 3 states and 169 transitions. [2024-10-11 19:52:22,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 230 flow [2024-10-11 19:52:22,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:52:22,497 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 158 flow [2024-10-11 19:52:22,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2024-10-11 19:52:22,504 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -6 predicate places. [2024-10-11 19:52:22,504 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 158 flow [2024-10-11 19:52:22,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:22,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:22,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:52:22,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:22,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:22,709 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:22,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash 909453, now seen corresponding path program 1 times [2024-10-11 19:52:22,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:22,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513343388] [2024-10-11 19:52:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:22,711 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 [2024-10-11 19:52:22,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:22,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:22,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:22,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:52:22,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:22,832 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 [2024-10-11 19:52:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:22,943 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:22,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:22,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513343388] [2024-10-11 19:52:22,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513343388] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:22,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:22,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:52:22,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561889] [2024-10-11 19:52:22,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:22,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:52:22,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:52:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:52:23,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:52:23,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-10-11 19:52:23,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:23,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:52:23,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:23,535 INFO L124 PetriNetUnfolderBase]: 193/585 cut-off events. [2024-10-11 19:52:23,536 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:52:23,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 585 events. 193/585 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3528 event pairs, 113 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 877. Up to 310 conditions per place. [2024-10-11 19:52:23,542 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 35 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-10-11 19:52:23,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 252 flow [2024-10-11 19:52:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:52:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:52:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-10-11 19:52:23,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-10-11 19:52:23,547 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 158 flow. Second operand 4 states and 220 transitions. [2024-10-11 19:52:23,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 252 flow [2024-10-11 19:52:23,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:52:23,551 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 193 flow [2024-10-11 19:52:23,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2024-10-11 19:52:23,552 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2024-10-11 19:52:23,553 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 193 flow [2024-10-11 19:52:23,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-10-11 19:52:23,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:23,553 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:52:23,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:23,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:23,754 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:23,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash 874013510, now seen corresponding path program 1 times [2024-10-11 19:52:23,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:23,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034271599] [2024-10-11 19:52:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:23,756 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 [2024-10-11 19:52:23,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:23,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:23,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:23,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:52:23,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:23,850 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 [2024-10-11 19:52:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:23,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:24,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:24,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034271599] [2024-10-11 19:52:24,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034271599] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:24,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:24,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:52:24,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242973302] [2024-10-11 19:52:24,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:24,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:52:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:24,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:52:24,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:52:24,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:52:24,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 193 flow. Second operand has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 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) [2024-10-11 19:52:24,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:24,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:52:24,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:26,012 INFO L124 PetriNetUnfolderBase]: 199/603 cut-off events. [2024-10-11 19:52:26,012 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 19:52:26,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 603 events. 199/603 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3629 event pairs, 113 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 886. Up to 313 conditions per place. [2024-10-11 19:52:26,018 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 35 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2024-10-11 19:52:26,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 98 transitions, 382 flow [2024-10-11 19:52:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:52:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:52:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 505 transitions. [2024-10-11 19:52:26,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2024-10-11 19:52:26,023 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 193 flow. Second operand 10 states and 505 transitions. [2024-10-11 19:52:26,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 98 transitions, 382 flow [2024-10-11 19:52:26,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 98 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:52:26,027 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 348 flow [2024-10-11 19:52:26,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=348, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2024-10-11 19:52:26,028 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-11 19:52:26,028 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 348 flow [2024-10-11 19:52:26,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 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) [2024-10-11 19:52:26,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:26,029 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:26,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:26,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:26,230 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:26,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1886564600, now seen corresponding path program 1 times [2024-10-11 19:52:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:26,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936007408] [2024-10-11 19:52:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:26,232 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 [2024-10-11 19:52:26,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:26,234 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:26,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:26,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:52:26,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:26,316 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 [2024-10-11 19:52:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:52:26,324 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:26,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936007408] [2024-10-11 19:52:26,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936007408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:26,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:26,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:52:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930841657] [2024-10-11 19:52:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:26,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:52:26,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:52:26,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:52:26,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:52:26,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-10-11 19:52:26,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:26,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:52:26,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:26,553 INFO L124 PetriNetUnfolderBase]: 199/601 cut-off events. [2024-10-11 19:52:26,554 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-11 19:52:26,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 601 events. 199/601 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3610 event pairs, 113 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 960. Up to 320 conditions per place. [2024-10-11 19:52:26,558 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 51 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2024-10-11 19:52:26,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 458 flow [2024-10-11 19:52:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:52:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:52:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-10-11 19:52:26,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-10-11 19:52:26,560 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 348 flow. Second operand 3 states and 168 transitions. [2024-10-11 19:52:26,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 458 flow [2024-10-11 19:52:26,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 96 transitions, 406 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-11 19:52:26,565 INFO L231 Difference]: Finished difference. Result has 83 places, 96 transitions, 304 flow [2024-10-11 19:52:26,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=83, PETRI_TRANSITIONS=96} [2024-10-11 19:52:26,566 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-11 19:52:26,566 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 96 transitions, 304 flow [2024-10-11 19:52:26,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-10-11 19:52:26,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:26,567 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:26,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:26,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:26,768 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:26,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:26,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1886564599, now seen corresponding path program 1 times [2024-10-11 19:52:26,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:26,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352283814] [2024-10-11 19:52:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:26,770 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 [2024-10-11 19:52:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:26,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:26,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:26,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:52:26,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:26,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 19:52:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:52:26,930 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:26,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:26,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352283814] [2024-10-11 19:52:26,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352283814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:26,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:26,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:52:26,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331761663] [2024-10-11 19:52:26,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:26,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:52:26,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:26,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:52:26,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:52:27,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:52:27,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 96 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2024-10-11 19:52:27,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:27,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:52:27,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:27,447 INFO L124 PetriNetUnfolderBase]: 200/604 cut-off events. [2024-10-11 19:52:27,447 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 19:52:27,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 604 events. 200/604 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3623 event pairs, 113 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 954. Up to 328 conditions per place. [2024-10-11 19:52:27,451 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 53 selfloop transitions, 9 changer transitions 0/99 dead transitions. [2024-10-11 19:52:27,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 99 transitions, 434 flow [2024-10-11 19:52:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:52:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:52:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 260 transitions. [2024-10-11 19:52:27,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-10-11 19:52:27,454 INFO L175 Difference]: Start difference. First operand has 83 places, 96 transitions, 304 flow. Second operand 5 states and 260 transitions. [2024-10-11 19:52:27,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 99 transitions, 434 flow [2024-10-11 19:52:27,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 99 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:52:27,460 INFO L231 Difference]: Finished difference. Result has 87 places, 99 transitions, 333 flow [2024-10-11 19:52:27,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=87, PETRI_TRANSITIONS=99} [2024-10-11 19:52:27,460 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-11 19:52:27,461 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 99 transitions, 333 flow [2024-10-11 19:52:27,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2024-10-11 19:52:27,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:27,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:27,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:52:27,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:27,662 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:27,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1646041094, now seen corresponding path program 1 times [2024-10-11 19:52:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:27,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872992235] [2024-10-11 19:52:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:27,663 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 [2024-10-11 19:52:27,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:27,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:27,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:27,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:52:27,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:27,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 19:52:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:52:27,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:27,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:27,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872992235] [2024-10-11 19:52:27,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872992235] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:27,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:27,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:52:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197252244] [2024-10-11 19:52:27,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:27,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:52:27,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:52:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:52:28,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:52:28,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 99 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 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) [2024-10-11 19:52:28,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:28,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:52:28,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:28,268 INFO L124 PetriNetUnfolderBase]: 201/607 cut-off events. [2024-10-11 19:52:28,268 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 19:52:28,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 607 events. 201/607 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3640 event pairs, 113 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 995. Up to 323 conditions per place. [2024-10-11 19:52:28,272 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 56 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2024-10-11 19:52:28,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 102 transitions, 469 flow [2024-10-11 19:52:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:52:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:52:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 260 transitions. [2024-10-11 19:52:28,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-10-11 19:52:28,275 INFO L175 Difference]: Start difference. First operand has 87 places, 99 transitions, 333 flow. Second operand 5 states and 260 transitions. [2024-10-11 19:52:28,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 102 transitions, 469 flow [2024-10-11 19:52:28,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 102 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:52:28,281 INFO L231 Difference]: Finished difference. Result has 91 places, 102 transitions, 362 flow [2024-10-11 19:52:28,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=91, PETRI_TRANSITIONS=102} [2024-10-11 19:52:28,285 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-10-11 19:52:28,285 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 102 transitions, 362 flow [2024-10-11 19:52:28,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 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) [2024-10-11 19:52:28,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:28,286 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:28,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:28,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:28,486 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:28,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash -512351874, now seen corresponding path program 1 times [2024-10-11 19:52:28,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:28,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406004692] [2024-10-11 19:52:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:28,488 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 [2024-10-11 19:52:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:28,491 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:28,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:28,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:52:28,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:28,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 19:52:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:52:28,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:52:29,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:29,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406004692] [2024-10-11 19:52:29,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406004692] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:29,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:29,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:52:29,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054992547] [2024-10-11 19:52:29,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:29,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:52:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:29,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:52:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:52:29,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:52:29,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 102 transitions, 362 flow. Second operand has 11 states, 11 states have (on average 45.63636363636363) internal successors, (502), 11 states have internal predecessors, (502), 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) [2024-10-11 19:52:29,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:29,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:52:29,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:31,360 INFO L124 PetriNetUnfolderBase]: 205/619 cut-off events. [2024-10-11 19:52:31,360 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-11 19:52:31,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 619 events. 205/619 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3707 event pairs, 113 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 1038. Up to 329 conditions per place. [2024-10-11 19:52:31,364 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 53 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2024-10-11 19:52:31,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 114 transitions, 573 flow [2024-10-11 19:52:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 19:52:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 19:52:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 542 transitions. [2024-10-11 19:52:31,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6008869179600886 [2024-10-11 19:52:31,368 INFO L175 Difference]: Start difference. First operand has 91 places, 102 transitions, 362 flow. Second operand 11 states and 542 transitions. [2024-10-11 19:52:31,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 114 transitions, 573 flow [2024-10-11 19:52:31,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 114 transitions, 558 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:52:31,371 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 488 flow [2024-10-11 19:52:31,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=488, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2024-10-11 19:52:31,372 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 25 predicate places. [2024-10-11 19:52:31,373 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 488 flow [2024-10-11 19:52:31,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 45.63636363636363) internal successors, (502), 11 states have internal predecessors, (502), 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) [2024-10-11 19:52:31,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:31,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:31,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:31,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:31,574 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:31,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1297673697, now seen corresponding path program 1 times [2024-10-11 19:52:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:31,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65029252] [2024-10-11 19:52:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:31,575 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 [2024-10-11 19:52:31,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:31,578 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:31,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:31,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:52:31,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:31,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:31,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:31,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65029252] [2024-10-11 19:52:31,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65029252] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:31,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:31,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-11 19:52:31,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260557789] [2024-10-11 19:52:31,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:31,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:52:31,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:52:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:52:32,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-10-11 19:52:32,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 488 flow. Second operand has 10 states, 10 states have (on average 47.4) internal successors, (474), 10 states have internal predecessors, (474), 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) [2024-10-11 19:52:32,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:32,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-10-11 19:52:32,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:32,770 INFO L124 PetriNetUnfolderBase]: 396/1191 cut-off events. [2024-10-11 19:52:32,770 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-10-11 19:52:32,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1191 events. 396/1191 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8514 event pairs, 225 based on Foata normal form. 2/907 useless extension candidates. Maximal degree in co-relation 2030. Up to 319 conditions per place. [2024-10-11 19:52:32,778 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 89 selfloop transitions, 44 changer transitions 0/172 dead transitions. [2024-10-11 19:52:32,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 172 transitions, 1048 flow [2024-10-11 19:52:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:52:32,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:52:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 488 transitions. [2024-10-11 19:52:32,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612466124661247 [2024-10-11 19:52:32,780 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 488 flow. Second operand 9 states and 488 transitions. [2024-10-11 19:52:32,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 172 transitions, 1048 flow [2024-10-11 19:52:32,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 172 transitions, 963 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-10-11 19:52:32,785 INFO L231 Difference]: Finished difference. Result has 107 places, 133 transitions, 642 flow [2024-10-11 19:52:32,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=642, PETRI_PLACES=107, PETRI_TRANSITIONS=133} [2024-10-11 19:52:32,786 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2024-10-11 19:52:32,786 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 133 transitions, 642 flow [2024-10-11 19:52:32,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 47.4) internal successors, (474), 10 states have internal predecessors, (474), 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) [2024-10-11 19:52:32,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:32,787 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:52:32,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:52:32,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:32,988 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:32,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:32,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1984467471, now seen corresponding path program 2 times [2024-10-11 19:52:32,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:32,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830004787] [2024-10-11 19:52:32,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:52:32,989 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 [2024-10-11 19:52:32,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:32,990 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:32,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:33,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:52:33,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:52:33,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:52:33,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:33,077 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 [2024-10-11 19:52:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:33,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:33,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:33,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830004787] [2024-10-11 19:52:33,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830004787] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:33,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:33,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:52:33,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777151877] [2024-10-11 19:52:33,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:33,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:52:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:52:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:52:35,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:52:35,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 133 transitions, 642 flow. Second operand has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 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) [2024-10-11 19:52:35,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:35,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:52:35,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:39,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:52:43,153 INFO L124 PetriNetUnfolderBase]: 421/1274 cut-off events. [2024-10-11 19:52:43,153 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-10-11 19:52:43,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 1274 events. 421/1274 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9306 event pairs, 226 based on Foata normal form. 18/983 useless extension candidates. Maximal degree in co-relation 2261. Up to 667 conditions per place. [2024-10-11 19:52:43,163 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 68 selfloop transitions, 70 changer transitions 0/175 dead transitions. [2024-10-11 19:52:43,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 175 transitions, 1158 flow [2024-10-11 19:52:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:52:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:52:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1075 transitions. [2024-10-11 19:52:43,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5958980044345898 [2024-10-11 19:52:43,168 INFO L175 Difference]: Start difference. First operand has 107 places, 133 transitions, 642 flow. Second operand 22 states and 1075 transitions. [2024-10-11 19:52:43,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 175 transitions, 1158 flow [2024-10-11 19:52:43,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 175 transitions, 1157 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:52:43,186 INFO L231 Difference]: Finished difference. Result has 133 places, 175 transitions, 1081 flow [2024-10-11 19:52:43,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1081, PETRI_PLACES=133, PETRI_TRANSITIONS=175} [2024-10-11 19:52:43,187 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2024-10-11 19:52:43,187 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 175 transitions, 1081 flow [2024-10-11 19:52:43,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 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) [2024-10-11 19:52:43,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:43,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:43,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 19:52:43,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:43,389 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:43,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 840698701, now seen corresponding path program 1 times [2024-10-11 19:52:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:43,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059001463] [2024-10-11 19:52:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:43,390 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 [2024-10-11 19:52:43,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:43,391 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:43,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:43,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:52:43,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:52:43,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:43,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059001463] [2024-10-11 19:52:43,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059001463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:43,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:43,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:52:43,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172109507] [2024-10-11 19:52:43,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:43,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:52:43,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:52:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:52:43,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-10-11 19:52:43,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 175 transitions, 1081 flow. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2024-10-11 19:52:43,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:43,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-10-11 19:52:43,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:43,824 INFO L124 PetriNetUnfolderBase]: 419/1272 cut-off events. [2024-10-11 19:52:43,824 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-10-11 19:52:43,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 1272 events. 419/1272 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9207 event pairs, 226 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 2380. Up to 715 conditions per place. [2024-10-11 19:52:43,834 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 121 selfloop transitions, 13 changer transitions 0/173 dead transitions. [2024-10-11 19:52:43,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 173 transitions, 1329 flow [2024-10-11 19:52:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:52:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:52:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-10-11 19:52:43,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6798780487804879 [2024-10-11 19:52:43,836 INFO L175 Difference]: Start difference. First operand has 133 places, 175 transitions, 1081 flow. Second operand 4 states and 223 transitions. [2024-10-11 19:52:43,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 173 transitions, 1329 flow [2024-10-11 19:52:43,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 173 transitions, 1157 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-10-11 19:52:43,843 INFO L231 Difference]: Finished difference. Result has 127 places, 173 transitions, 915 flow [2024-10-11 19:52:43,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=915, PETRI_PLACES=127, PETRI_TRANSITIONS=173} [2024-10-11 19:52:43,844 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 49 predicate places. [2024-10-11 19:52:43,845 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 173 transitions, 915 flow [2024-10-11 19:52:43,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2024-10-11 19:52:43,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:43,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:43,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:44,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:44,046 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:44,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:44,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1757674052, now seen corresponding path program 1 times [2024-10-11 19:52:44,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:44,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641042032] [2024-10-11 19:52:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:44,047 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 [2024-10-11 19:52:44,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:44,048 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:44,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:44,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:52:44,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:52:44,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:52:44,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:44,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641042032] [2024-10-11 19:52:44,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641042032] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:44,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:44,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2024-10-11 19:52:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754700650] [2024-10-11 19:52:44,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:44,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:52:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:44,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:52:44,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:52:44,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-10-11 19:52:44,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 173 transitions, 915 flow. Second operand has 11 states, 11 states have (on average 48.09090909090909) internal successors, (529), 11 states have internal predecessors, (529), 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) [2024-10-11 19:52:44,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:44,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-10-11 19:52:44,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:45,173 INFO L124 PetriNetUnfolderBase]: 789/2382 cut-off events. [2024-10-11 19:52:45,173 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-10-11 19:52:45,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 2382 events. 789/2382 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19961 event pairs, 450 based on Foata normal form. 4/1820 useless extension candidates. Maximal degree in co-relation 4135. Up to 667 conditions per place. [2024-10-11 19:52:45,185 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 110 selfloop transitions, 81 changer transitions 0/230 dead transitions. [2024-10-11 19:52:45,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 230 transitions, 1612 flow [2024-10-11 19:52:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:52:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:52:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 485 transitions. [2024-10-11 19:52:45,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571815718157181 [2024-10-11 19:52:45,187 INFO L175 Difference]: Start difference. First operand has 127 places, 173 transitions, 915 flow. Second operand 9 states and 485 transitions. [2024-10-11 19:52:45,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 230 transitions, 1612 flow [2024-10-11 19:52:45,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 230 transitions, 1598 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:52:45,194 INFO L231 Difference]: Finished difference. Result has 133 places, 205 transitions, 1299 flow [2024-10-11 19:52:45,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1299, PETRI_PLACES=133, PETRI_TRANSITIONS=205} [2024-10-11 19:52:45,195 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2024-10-11 19:52:45,195 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 205 transitions, 1299 flow [2024-10-11 19:52:45,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 48.09090909090909) internal successors, (529), 11 states have internal predecessors, (529), 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) [2024-10-11 19:52:45,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:45,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:45,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-10-11 19:52:45,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:45,397 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:52:45,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1090143385, now seen corresponding path program 1 times [2024-10-11 19:52:45,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:45,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602987531] [2024-10-11 19:52:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:45,398 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 [2024-10-11 19:52:45,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:45,401 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:52:45,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:52:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:45,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 19:52:45,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:45,565 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 [2024-10-11 19:52:45,580 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 [2024-10-11 19:52:45,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:52:45,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 19:52:45,725 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:52:45,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:52:45,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:52:45,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 19:52:45,831 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:52:45,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:52:45,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:52:45,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 19:52:45,906 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:52:45,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:52:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:52:45,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:52:52,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:52,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602987531] [2024-10-11 19:52:52,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602987531] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:52,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:52,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 10 [2024-10-11 19:52:52,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332904000] [2024-10-11 19:52:52,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:52,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:52:52,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:52,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:52:52,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2024-10-11 19:52:53,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:52:56,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:52:59,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:53:04,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:53:08,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:53:14,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:53:14,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 82 [2024-10-11 19:53:14,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 205 transitions, 1299 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 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) [2024-10-11 19:53:14,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:14,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 82 [2024-10-11 19:53:14,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:18,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:53:23,757 INFO L124 PetriNetUnfolderBase]: 3795/6961 cut-off events. [2024-10-11 19:53:23,757 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-10-11 19:53:23,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14251 conditions, 6961 events. 3795/6961 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 53501 event pairs, 2948 based on Foata normal form. 0/4399 useless extension candidates. Maximal degree in co-relation 14107. Up to 3215 conditions per place. [2024-10-11 19:53:23,792 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 263 selfloop transitions, 90 changer transitions 0/362 dead transitions. [2024-10-11 19:53:23,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 362 transitions, 2948 flow [2024-10-11 19:53:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:53:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:53:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 294 transitions. [2024-10-11 19:53:23,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29878048780487804 [2024-10-11 19:53:23,795 INFO L175 Difference]: Start difference. First operand has 133 places, 205 transitions, 1299 flow. Second operand 12 states and 294 transitions. [2024-10-11 19:53:23,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 362 transitions, 2948 flow [2024-10-11 19:53:23,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 362 transitions, 2947 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:23,807 INFO L231 Difference]: Finished difference. Result has 142 places, 247 transitions, 1812 flow [2024-10-11 19:53:23,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1812, PETRI_PLACES=142, PETRI_TRANSITIONS=247} [2024-10-11 19:53:23,808 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 64 predicate places. [2024-10-11 19:53:23,808 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 247 transitions, 1812 flow [2024-10-11 19:53:23,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 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) [2024-10-11 19:53:23,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:23,809 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:23,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:53:24,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:24,010 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:53:24,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:24,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1090026194, now seen corresponding path program 1 times [2024-10-11 19:53:24,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:24,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582032542] [2024-10-11 19:53:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:24,010 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 [2024-10-11 19:53:24,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:24,012 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:53:24,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:53:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:24,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:53:24,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:24,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 19:53:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:53:24,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:53:24,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:24,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582032542] [2024-10-11 19:53:24,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582032542] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:24,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:53:24,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2024-10-11 19:53:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793518969] [2024-10-11 19:53:24,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:24,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:53:24,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:53:24,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:53:25,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:53:25,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 247 transitions, 1812 flow. Second operand has 11 states, 11 states have (on average 46.63636363636363) internal successors, (513), 11 states have internal predecessors, (513), 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) [2024-10-11 19:53:25,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:25,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:53:25,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:28,946 INFO L124 PetriNetUnfolderBase]: 941/2735 cut-off events. [2024-10-11 19:53:28,946 INFO L125 PetriNetUnfolderBase]: For 613/637 co-relation queries the response was YES. [2024-10-11 19:53:28,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 2735 events. 941/2735 cut-off events. For 613/637 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 22989 event pairs, 498 based on Foata normal form. 24/2209 useless extension candidates. Maximal degree in co-relation 5703. Up to 1518 conditions per place. [2024-10-11 19:53:28,961 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 139 selfloop transitions, 111 changer transitions 0/283 dead transitions. [2024-10-11 19:53:28,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 283 transitions, 2656 flow [2024-10-11 19:53:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:53:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:53:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 725 transitions. [2024-10-11 19:53:28,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5894308943089431 [2024-10-11 19:53:28,965 INFO L175 Difference]: Start difference. First operand has 142 places, 247 transitions, 1812 flow. Second operand 15 states and 725 transitions. [2024-10-11 19:53:28,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 283 transitions, 2656 flow [2024-10-11 19:53:28,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 283 transitions, 2651 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:53:28,981 INFO L231 Difference]: Finished difference. Result has 158 places, 283 transitions, 2453 flow [2024-10-11 19:53:28,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2453, PETRI_PLACES=158, PETRI_TRANSITIONS=283} [2024-10-11 19:53:28,981 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 80 predicate places. [2024-10-11 19:53:28,982 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 283 transitions, 2453 flow [2024-10-11 19:53:28,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 46.63636363636363) internal successors, (513), 11 states have internal predecessors, (513), 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) [2024-10-11 19:53:28,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:28,982 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:28,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:53:29,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:29,187 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:53:29,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:29,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1100301562, now seen corresponding path program 1 times [2024-10-11 19:53:29,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:29,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708691770] [2024-10-11 19:53:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:29,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:29,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:29,189 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:53:29,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:53:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:29,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 19:53:29,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:29,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 19:53:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:53:29,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:53:30,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708691770] [2024-10-11 19:53:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708691770] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:30,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:53:30,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-11 19:53:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960598990] [2024-10-11 19:53:30,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:30,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:53:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:53:30,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:53:32,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-10-11 19:53:32,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 283 transitions, 2453 flow. Second operand has 15 states, 15 states have (on average 46.266666666666666) internal successors, (694), 15 states have internal predecessors, (694), 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) [2024-10-11 19:53:32,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:32,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-10-11 19:53:32,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:42,240 INFO L124 PetriNetUnfolderBase]: 977/2843 cut-off events. [2024-10-11 19:53:42,240 INFO L125 PetriNetUnfolderBase]: For 1080/1104 co-relation queries the response was YES. [2024-10-11 19:53:42,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6770 conditions, 2843 events. 977/2843 cut-off events. For 1080/1104 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 24136 event pairs, 498 based on Foata normal form. 36/2329 useless extension candidates. Maximal degree in co-relation 6595. Up to 1541 conditions per place. [2024-10-11 19:53:42,259 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 151 selfloop transitions, 159 changer transitions 0/343 dead transitions. [2024-10-11 19:53:42,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 343 transitions, 3625 flow [2024-10-11 19:53:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 19:53:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 19:53:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1097 transitions. [2024-10-11 19:53:42,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816542948038176 [2024-10-11 19:53:42,264 INFO L175 Difference]: Start difference. First operand has 158 places, 283 transitions, 2453 flow. Second operand 23 states and 1097 transitions. [2024-10-11 19:53:42,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 343 transitions, 3625 flow [2024-10-11 19:53:42,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 343 transitions, 3411 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-10-11 19:53:42,333 INFO L231 Difference]: Finished difference. Result has 182 places, 343 transitions, 3227 flow [2024-10-11 19:53:42,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3227, PETRI_PLACES=182, PETRI_TRANSITIONS=343} [2024-10-11 19:53:42,334 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 104 predicate places. [2024-10-11 19:53:42,334 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 343 transitions, 3227 flow [2024-10-11 19:53:42,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 46.266666666666666) internal successors, (694), 15 states have internal predecessors, (694), 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) [2024-10-11 19:53:42,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:42,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:42,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 19:53:42,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:42,535 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:53:42,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:42,535 INFO L85 PathProgramCache]: Analyzing trace with hash -565292459, now seen corresponding path program 1 times [2024-10-11 19:53:42,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:42,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852803946] [2024-10-11 19:53:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:42,536 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 [2024-10-11 19:53:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:42,537 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:53:42,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:53:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:42,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:53:42,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:42,664 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 [2024-10-11 19:53:42,693 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:53:42,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:53:42,716 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 19:53:42,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 19:53:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 19:53:42,734 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:42,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:42,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852803946] [2024-10-11 19:53:42,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852803946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:42,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:42,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:53:42,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957996773] [2024-10-11 19:53:42,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:42,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:53:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:53:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:53:42,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2024-10-11 19:53:42,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 343 transitions, 3227 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-10-11 19:53:42,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:42,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2024-10-11 19:53:42,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:43,309 INFO L124 PetriNetUnfolderBase]: 1085/2841 cut-off events. [2024-10-11 19:53:43,309 INFO L125 PetriNetUnfolderBase]: For 1044/1068 co-relation queries the response was YES. [2024-10-11 19:53:43,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 2841 events. 1085/2841 cut-off events. For 1044/1068 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 22889 event pairs, 582 based on Foata normal form. 0/2501 useless extension candidates. Maximal degree in co-relation 6943. Up to 1864 conditions per place. [2024-10-11 19:53:43,323 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 288 selfloop transitions, 21 changer transitions 0/339 dead transitions. [2024-10-11 19:53:43,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 339 transitions, 3837 flow [2024-10-11 19:53:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:53:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:53:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-10-11 19:53:43,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945121951219512 [2024-10-11 19:53:43,325 INFO L175 Difference]: Start difference. First operand has 182 places, 343 transitions, 3227 flow. Second operand 4 states and 195 transitions. [2024-10-11 19:53:43,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 339 transitions, 3837 flow [2024-10-11 19:53:43,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 339 transitions, 3581 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-10-11 19:53:43,348 INFO L231 Difference]: Finished difference. Result has 172 places, 339 transitions, 3005 flow [2024-10-11 19:53:43,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3005, PETRI_PLACES=172, PETRI_TRANSITIONS=339} [2024-10-11 19:53:43,349 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 94 predicate places. [2024-10-11 19:53:43,349 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 339 transitions, 3005 flow [2024-10-11 19:53:43,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-10-11 19:53:43,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:43,349 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:43,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-11 19:53:43,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:43,550 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-11 19:53:43,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash -565292458, now seen corresponding path program 1 times [2024-10-11 19:53:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:43,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052100302] [2024-10-11 19:53:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:43,552 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 [2024-10-11 19:53:43,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:43,555 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:53:43,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 19:53:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:43,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 19:53:43,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:43,723 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 [2024-10-11 19:53:43,736 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 [2024-10-11 19:53:43,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:53:43,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 19:53:43,894 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:53:43,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:53:44,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:53:44,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 19:53:44,042 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:53:44,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13