./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-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:16:58,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:16:58,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:16:58,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:16:58,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:16:58,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:16:58,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:16:58,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:16:58,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:16:58,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:16:58,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:16:58,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:16:58,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:16:58,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:16:58,995 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:16:58,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:16:58,996 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:16:58,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:16:58,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:16:58,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:16:58,997 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:16:59,001 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:16:59,002 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:16:59,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:16:59,002 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:16:59,002 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:16:59,003 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:16:59,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:16:59,003 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:16:59,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:16:59,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:16:59,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:16:59,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:16:59,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:16:59,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:16:59,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:16:59,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:16:59,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:16:59,007 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:16:59,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:16:59,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:16:59,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:16:59,008 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-10-24 19:16:59,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:16:59,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:16:59,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:16:59,290 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:16:59,290 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:16:59,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-24 19:17:00,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:17:01,066 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:17:01,067 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-24 19:17:01,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12777ccad/5236a6806d3b471f9cfa007880e9cf7c/FLAG75a7b80fc [2024-10-24 19:17:01,092 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12777ccad/5236a6806d3b471f9cfa007880e9cf7c [2024-10-24 19:17:01,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:17:01,096 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:17:01,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:17:01,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:17:01,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:17:01,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:17:01" (1/1) ... [2024-10-24 19:17:01,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6046cc99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:01, skipping insertion in model container [2024-10-24 19:17:01,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:17:01" (1/1) ... [2024-10-24 19:17:01,135 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:17:01,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:17:01,422 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-24 19:17:01,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5984b991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:01, skipping insertion in model container [2024-10-24 19:17:01,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:17:01,424 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:17:01,426 INFO L158 Benchmark]: Toolchain (without parser) took 328.70ms. Allocated memory is still 159.4MB. Free memory was 104.6MB in the beginning and 91.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:17:01,426 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:17:01,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.10ms. Allocated memory is still 159.4MB. Free memory was 104.2MB in the beginning and 91.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:17:01,429 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.10ms. Allocated memory is still 159.4MB. Free memory was 104.2MB in the beginning and 91.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 137]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:17:03,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:17:03,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:17:03,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:17:03,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:17:03,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:17:03,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:17:03,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:17:03,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:17:03,703 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:17:03,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:17:03,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:17:03,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:17:03,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:17:03,709 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:17:03,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:17:03,710 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:17:03,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:17:03,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:17:03,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:17:03,711 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:17:03,712 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:17:03,712 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:17:03,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:17:03,713 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:17:03,713 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:17:03,714 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:17:03,714 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:17:03,715 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:17:03,715 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:17:03,715 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:17:03,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:17:03,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:17:03,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:17:03,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:17:03,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:17:03,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:17:03,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:17:03,719 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:17:03,719 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:17:03,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:17:03,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:17:03,720 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:17:03,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:17:03,720 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:17:03,720 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-10-24 19:17:04,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:17:04,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:17:04,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:17:04,129 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:17:04,129 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:17:04,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-24 19:17:05,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:17:06,084 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:17:06,084 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-24 19:17:06,099 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82befec6/4a5b091427a943d496bb8b5dad86177c/FLAGa8ee26da8 [2024-10-24 19:17:06,114 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d82befec6/4a5b091427a943d496bb8b5dad86177c [2024-10-24 19:17:06,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:17:06,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:17:06,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:17:06,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:17:06,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:17:06,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15415cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06, skipping insertion in model container [2024-10-24 19:17:06,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,157 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:17:06,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:17:06,467 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:17:06,469 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:17:06,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:17:06,517 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:17:06,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:17:06,585 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:17:06,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06 WrapperNode [2024-10-24 19:17:06,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:17:06,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:17:06,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:17:06,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:17:06,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,647 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 158 [2024-10-24 19:17:06,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:17:06,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:17:06,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:17:06,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:17:06,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,707 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-24 19:17:06,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:17:06,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:17:06,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:17:06,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:17:06,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (1/1) ... [2024-10-24 19:17:06,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:17:06,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:06,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:17:06,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:17:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:17:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:17:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:17:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:17:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:17:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:17:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:17:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:17:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:17:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 19:17:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 19:17:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:17:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:17:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:17:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:17:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:17:06,847 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:17:06,993 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:17:06,995 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:17:07,790 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:17:07,794 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:17:08,140 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:17:08,140 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 19:17:08,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:17:08 BoogieIcfgContainer [2024-10-24 19:17:08,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:17:08,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:17:08,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:17:08,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:17:08,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:17:06" (1/3) ... [2024-10-24 19:17:08,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3f89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:17:08, skipping insertion in model container [2024-10-24 19:17:08,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:06" (2/3) ... [2024-10-24 19:17:08,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3f89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:17:08, skipping insertion in model container [2024-10-24 19:17:08,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:17:08" (3/3) ... [2024-10-24 19:17:08,150 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-10-24 19:17:08,168 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:17:08,169 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-24 19:17:08,169 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:17:08,289 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 19:17:08,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 213 flow [2024-10-24 19:17:08,370 INFO L124 PetriNetUnfolderBase]: 12/93 cut-off events. [2024-10-24 19:17:08,370 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 19:17:08,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 12/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 302 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-10-24 19:17:08,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 96 transitions, 213 flow [2024-10-24 19:17:08,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 92 transitions, 202 flow [2024-10-24 19:17:08,392 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:17:08,399 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;@2b4050e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:17:08,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-10-24 19:17:08,404 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:17:08,404 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:17:08,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:17:08,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:08,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:17:08,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:08,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:08,411 INFO L85 PathProgramCache]: Analyzing trace with hash 754304, now seen corresponding path program 1 times [2024-10-24 19:17:08,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:08,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441273657] [2024-10-24 19:17:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:08,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:08,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:08,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:08,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 19:17:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:08,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:17:08,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:08,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:17:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:08,616 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:17:08,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:08,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441273657] [2024-10-24 19:17:08,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441273657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:08,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:08,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:17:08,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331564883] [2024-10-24 19:17:08,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:08,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:17:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:08,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:17:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:17:08,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-24 19:17:08,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 202 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) [2024-10-24 19:17:08,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:08,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-24 19:17:08,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:09,641 INFO L124 PetriNetUnfolderBase]: 2712/4959 cut-off events. [2024-10-24 19:17:09,641 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-10-24 19:17:09,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8710 conditions, 4959 events. 2712/4959 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 34705 event pairs, 1692 based on Foata normal form. 1/3394 useless extension candidates. Maximal degree in co-relation 8234. Up to 3567 conditions per place. [2024-10-24 19:17:09,685 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 45 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-10-24 19:17:09,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 286 flow [2024-10-24 19:17:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:17:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:17:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-10-24 19:17:09,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-10-24 19:17:09,703 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 202 flow. Second operand 3 states and 183 transitions. [2024-10-24 19:17:09,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 286 flow [2024-10-24 19:17:09,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 274 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 19:17:09,718 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 184 flow [2024-10-24 19:17:09,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2024-10-24 19:17:09,724 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -9 predicate places. [2024-10-24 19:17:09,725 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 184 flow [2024-10-24 19:17:09,725 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) [2024-10-24 19:17:09,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:09,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:17:09,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 19:17:09,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:09,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:09,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash 754305, now seen corresponding path program 1 times [2024-10-24 19:17:09,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:09,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650668148] [2024-10-24 19:17:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:09,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:09,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:09,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:09,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 19:17:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:10,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:17:10,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:10,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:17:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:10,142 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:17:10,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650668148] [2024-10-24 19:17:10,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650668148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:10,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:10,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:17:10,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748511380] [2024-10-24 19:17:10,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:10,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:17:10,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:10,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:17:10,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:17:10,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-24 19:17:10,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 184 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) [2024-10-24 19:17:10,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:10,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-24 19:17:10,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:11,240 INFO L124 PetriNetUnfolderBase]: 2715/4968 cut-off events. [2024-10-24 19:17:11,240 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-24 19:17:11,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8618 conditions, 4968 events. 2715/4968 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 34774 event pairs, 1692 based on Foata normal form. 0/3398 useless extension candidates. Maximal degree in co-relation 8568. Up to 3580 conditions per place. [2024-10-24 19:17:11,277 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 49 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-10-24 19:17:11,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 96 transitions, 322 flow [2024-10-24 19:17:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:17:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:17:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2024-10-24 19:17:11,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-24 19:17:11,280 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 184 flow. Second operand 4 states and 238 transitions. [2024-10-24 19:17:11,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 96 transitions, 322 flow [2024-10-24 19:17:11,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:17:11,284 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 262 flow [2024-10-24 19:17:11,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-10-24 19:17:11,285 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -5 predicate places. [2024-10-24 19:17:11,285 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 262 flow [2024-10-24 19:17:11,286 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) [2024-10-24 19:17:11,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:11,286 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:17:11,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-24 19:17:11,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:11,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:11,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash 724911050, now seen corresponding path program 1 times [2024-10-24 19:17:11,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:11,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190001547] [2024-10-24 19:17:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:11,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:11,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:11,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:11,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-24 19:17:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:11,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:17:11,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:11,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:17:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:11,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:11,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190001547] [2024-10-24 19:17:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190001547] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:11,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:17:11,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:17:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907220951] [2024-10-24 19:17:11,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:11,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:17:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:17:11,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:17:12,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-24 19:17:12,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 262 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) [2024-10-24 19:17:12,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:12,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-24 19:17:12,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:14,614 INFO L124 PetriNetUnfolderBase]: 2724/4995 cut-off events. [2024-10-24 19:17:14,614 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-24 19:17:14,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8736 conditions, 4995 events. 2724/4995 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 34985 event pairs, 1692 based on Foata normal form. 0/3425 useless extension candidates. Maximal degree in co-relation 8582. Up to 3583 conditions per place. [2024-10-24 19:17:14,688 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 49 selfloop transitions, 37 changer transitions 0/123 dead transitions. [2024-10-24 19:17:14,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 554 flow [2024-10-24 19:17:14,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:17:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:17:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 535 transitions. [2024-10-24 19:17:14,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-10-24 19:17:14,695 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 262 flow. Second operand 10 states and 535 transitions. [2024-10-24 19:17:14,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 554 flow [2024-10-24 19:17:14,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:17:14,704 INFO L231 Difference]: Finished difference. Result has 97 places, 123 transitions, 506 flow [2024-10-24 19:17:14,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=506, PETRI_PLACES=97, PETRI_TRANSITIONS=123} [2024-10-24 19:17:14,706 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 7 predicate places. [2024-10-24 19:17:14,706 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 123 transitions, 506 flow [2024-10-24 19:17:14,707 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) [2024-10-24 19:17:14,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:14,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:14,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-24 19:17:14,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:14,911 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:14,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:14,912 INFO L85 PathProgramCache]: Analyzing trace with hash -563258048, now seen corresponding path program 1 times [2024-10-24 19:17:14,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:14,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145238868] [2024-10-24 19:17:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:14,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:14,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:14,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:14,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-24 19:17:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:14,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:17:14,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:15,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:17:15,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:15,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145238868] [2024-10-24 19:17:15,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145238868] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:15,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:15,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:17:15,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254018749] [2024-10-24 19:17:15,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:15,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:15,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:15,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-24 19:17:15,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:15,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:15,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-24 19:17:15,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:16,360 INFO L124 PetriNetUnfolderBase]: 5214/9355 cut-off events. [2024-10-24 19:17:16,360 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-24 19:17:16,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16665 conditions, 9355 events. 5214/9355 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 70163 event pairs, 2894 based on Foata normal form. 0/6485 useless extension candidates. Maximal degree in co-relation 16523. Up to 4058 conditions per place. [2024-10-24 19:17:16,428 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 166 selfloop transitions, 5 changer transitions 0/210 dead transitions. [2024-10-24 19:17:16,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 210 transitions, 1178 flow [2024-10-24 19:17:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 345 transitions. [2024-10-24 19:17:16,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-24 19:17:16,431 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 506 flow. Second operand 5 states and 345 transitions. [2024-10-24 19:17:16,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 210 transitions, 1178 flow [2024-10-24 19:17:16,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 210 transitions, 1022 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-24 19:17:16,441 INFO L231 Difference]: Finished difference. Result has 99 places, 125 transitions, 436 flow [2024-10-24 19:17:16,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=99, PETRI_TRANSITIONS=125} [2024-10-24 19:17:16,443 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2024-10-24 19:17:16,444 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 125 transitions, 436 flow [2024-10-24 19:17:16,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:16,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:16,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:16,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-24 19:17:16,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:16,650 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:16,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1437805132, now seen corresponding path program 1 times [2024-10-24 19:17:16,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521205147] [2024-10-24 19:17:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:16,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:16,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:16,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:16,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-24 19:17:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:16,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:17:16,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:16,788 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:17:16,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521205147] [2024-10-24 19:17:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521205147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:16,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:16,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:16,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173828539] [2024-10-24 19:17:16,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:16,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:16,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:16,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:16,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:16,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-24 19:17:16,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 125 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:16,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:16,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-24 19:17:16,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:18,488 INFO L124 PetriNetUnfolderBase]: 9298/16896 cut-off events. [2024-10-24 19:17:18,489 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2024-10-24 19:17:18,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31251 conditions, 16896 events. 9298/16896 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 140724 event pairs, 5328 based on Foata normal form. 0/12227 useless extension candidates. Maximal degree in co-relation 31084. Up to 7366 conditions per place. [2024-10-24 19:17:18,588 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 152 selfloop transitions, 9 changer transitions 0/200 dead transitions. [2024-10-24 19:17:18,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 200 transitions, 982 flow [2024-10-24 19:17:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 341 transitions. [2024-10-24 19:17:18,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7104166666666667 [2024-10-24 19:17:18,591 INFO L175 Difference]: Start difference. First operand has 99 places, 125 transitions, 436 flow. Second operand 5 states and 341 transitions. [2024-10-24 19:17:18,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 200 transitions, 982 flow [2024-10-24 19:17:18,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 200 transitions, 978 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 19:17:18,601 INFO L231 Difference]: Finished difference. Result has 104 places, 127 transitions, 465 flow [2024-10-24 19:17:18,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=104, PETRI_TRANSITIONS=127} [2024-10-24 19:17:18,602 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 14 predicate places. [2024-10-24 19:17:18,603 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 127 transitions, 465 flow [2024-10-24 19:17:18,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:18,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:18,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:18,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-24 19:17:18,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:18,805 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:18,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash -282508343, now seen corresponding path program 1 times [2024-10-24 19:17:18,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:18,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641416283] [2024-10-24 19:17:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:18,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:18,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:18,811 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:18,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-24 19:17:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:18,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:17:18,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:18,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:17:18,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:18,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641416283] [2024-10-24 19:17:18,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641416283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:18,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:18,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:18,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100488887] [2024-10-24 19:17:18,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:18,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:18,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:18,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:18,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:19,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-24 19:17:19,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 127 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:19,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:19,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-24 19:17:19,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:20,152 INFO L124 PetriNetUnfolderBase]: 8554/15608 cut-off events. [2024-10-24 19:17:20,152 INFO L125 PetriNetUnfolderBase]: For 3289/3289 co-relation queries the response was YES. [2024-10-24 19:17:20,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30340 conditions, 15608 events. 8554/15608 cut-off events. For 3289/3289 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 129077 event pairs, 5008 based on Foata normal form. 98/12053 useless extension candidates. Maximal degree in co-relation 30170. Up to 6970 conditions per place. [2024-10-24 19:17:20,427 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 143 selfloop transitions, 11 changer transitions 0/193 dead transitions. [2024-10-24 19:17:20,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 193 transitions, 975 flow [2024-10-24 19:17:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2024-10-24 19:17:20,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-24 19:17:20,430 INFO L175 Difference]: Start difference. First operand has 104 places, 127 transitions, 465 flow. Second operand 5 states and 336 transitions. [2024-10-24 19:17:20,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 193 transitions, 975 flow [2024-10-24 19:17:20,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 193 transitions, 967 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 19:17:20,441 INFO L231 Difference]: Finished difference. Result has 109 places, 131 transitions, 518 flow [2024-10-24 19:17:20,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=109, PETRI_TRANSITIONS=131} [2024-10-24 19:17:20,443 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 19 predicate places. [2024-10-24 19:17:20,445 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 131 transitions, 518 flow [2024-10-24 19:17:20,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:20,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:20,446 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:17:20,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-24 19:17:20,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:20,649 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:20,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1444262437, now seen corresponding path program 2 times [2024-10-24 19:17:20,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:20,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256475222] [2024-10-24 19:17:20,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:17:20,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:20,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:20,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:20,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-24 19:17:20,715 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:17:20,716 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:20,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:17:20,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:20,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:17:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:21,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:21,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:21,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256475222] [2024-10-24 19:17:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256475222] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:21,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:17:21,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:17:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061242575] [2024-10-24 19:17:21,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:21,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:17:21,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:17:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:17:24,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-24 19:17:24,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 131 transitions, 518 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) [2024-10-24 19:17:24,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:24,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-24 19:17:24,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:28,088 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 [] [2024-10-24 19:17:29,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:17:32,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:17:40,291 INFO L124 PetriNetUnfolderBase]: 8261/16466 cut-off events. [2024-10-24 19:17:40,292 INFO L125 PetriNetUnfolderBase]: For 6966/6966 co-relation queries the response was YES. [2024-10-24 19:17:40,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32357 conditions, 16466 events. 8261/16466 cut-off events. For 6966/6966 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 150590 event pairs, 5595 based on Foata normal form. 42/12076 useless extension candidates. Maximal degree in co-relation 31727. Up to 11136 conditions per place. [2024-10-24 19:17:40,441 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 57 selfloop transitions, 91 changer transitions 0/185 dead transitions. [2024-10-24 19:17:40,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 185 transitions, 1096 flow [2024-10-24 19:17:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:17:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:17:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1126 transitions. [2024-10-24 19:17:40,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5331439393939394 [2024-10-24 19:17:40,454 INFO L175 Difference]: Start difference. First operand has 109 places, 131 transitions, 518 flow. Second operand 22 states and 1126 transitions. [2024-10-24 19:17:40,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 185 transitions, 1096 flow [2024-10-24 19:17:40,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 185 transitions, 1046 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:17:40,478 INFO L231 Difference]: Finished difference. Result has 133 places, 185 transitions, 1018 flow [2024-10-24 19:17:40,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1018, PETRI_PLACES=133, PETRI_TRANSITIONS=185} [2024-10-24 19:17:40,480 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2024-10-24 19:17:40,481 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 185 transitions, 1018 flow [2024-10-24 19:17:40,481 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) [2024-10-24 19:17:40,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:40,482 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:40,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-24 19:17:40,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:40,684 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:40,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1282179683, now seen corresponding path program 1 times [2024-10-24 19:17:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:40,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565516420] [2024-10-24 19:17:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:40,690 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:40,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-24 19:17:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:40,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:17:40,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:40,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:17:40,842 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-24 19:17:40,845 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 [2024-10-24 19:17:40,884 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-24 19:17:40,885 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 [2024-10-24 19:17:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 19:17:40,913 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:17:40,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565516420] [2024-10-24 19:17:40,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565516420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:40,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:40,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:17:40,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045236597] [2024-10-24 19:17:40,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:40,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:17:40,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:40,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:17:40,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:17:41,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 96 [2024-10-24 19:17:41,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 185 transitions, 1018 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:41,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:41,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 96 [2024-10-24 19:17:41,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:42,237 INFO L124 PetriNetUnfolderBase]: 10997/19078 cut-off events. [2024-10-24 19:17:42,238 INFO L125 PetriNetUnfolderBase]: For 8830/8830 co-relation queries the response was YES. [2024-10-24 19:17:42,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40053 conditions, 19078 events. 10997/19078 cut-off events. For 8830/8830 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 150209 event pairs, 7747 based on Foata normal form. 0/15845 useless extension candidates. Maximal degree in co-relation 39794. Up to 14839 conditions per place. [2024-10-24 19:17:42,429 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 126 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-10-24 19:17:42,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 181 transitions, 1308 flow [2024-10-24 19:17:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:42,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2024-10-24 19:17:42,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-10-24 19:17:42,431 INFO L175 Difference]: Start difference. First operand has 133 places, 185 transitions, 1018 flow. Second operand 5 states and 235 transitions. [2024-10-24 19:17:42,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 181 transitions, 1308 flow [2024-10-24 19:17:42,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 181 transitions, 1076 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-10-24 19:17:42,453 INFO L231 Difference]: Finished difference. Result has 124 places, 181 transitions, 824 flow [2024-10-24 19:17:42,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=824, PETRI_PLACES=124, PETRI_TRANSITIONS=181} [2024-10-24 19:17:42,456 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 34 predicate places. [2024-10-24 19:17:42,456 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 181 transitions, 824 flow [2024-10-24 19:17:42,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:42,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:42,457 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:42,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-24 19:17:42,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:42,658 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:42,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash -494348088, now seen corresponding path program 1 times [2024-10-24 19:17:42,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:42,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479184983] [2024-10-24 19:17:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:42,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:42,660 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:42,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-24 19:17:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:42,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:17:42,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:42,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:17:42,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:42,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479184983] [2024-10-24 19:17:42,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479184983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:42,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202221841] [2024-10-24 19:17:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:42,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:42,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-24 19:17:42,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 181 transitions, 824 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:42,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:42,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-24 19:17:42,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:44,907 INFO L124 PetriNetUnfolderBase]: 16000/29217 cut-off events. [2024-10-24 19:17:44,907 INFO L125 PetriNetUnfolderBase]: For 13300/13300 co-relation queries the response was YES. [2024-10-24 19:17:45,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59870 conditions, 29217 events. 16000/29217 cut-off events. For 13300/13300 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 261519 event pairs, 9364 based on Foata normal form. 222/23213 useless extension candidates. Maximal degree in co-relation 59648. Up to 12111 conditions per place. [2024-10-24 19:17:45,098 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 199 selfloop transitions, 17 changer transitions 0/251 dead transitions. [2024-10-24 19:17:45,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 251 transitions, 1512 flow [2024-10-24 19:17:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-10-24 19:17:45,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7041666666666667 [2024-10-24 19:17:45,100 INFO L175 Difference]: Start difference. First operand has 124 places, 181 transitions, 824 flow. Second operand 5 states and 338 transitions. [2024-10-24 19:17:45,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 251 transitions, 1512 flow [2024-10-24 19:17:45,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 251 transitions, 1477 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:17:45,139 INFO L231 Difference]: Finished difference. Result has 127 places, 185 transitions, 862 flow [2024-10-24 19:17:45,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=127, PETRI_TRANSITIONS=185} [2024-10-24 19:17:45,140 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 37 predicate places. [2024-10-24 19:17:45,140 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 185 transitions, 862 flow [2024-10-24 19:17:45,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:17:45,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:45,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:45,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-24 19:17:45,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:45,341 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-24 19:17:45,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1282179682, now seen corresponding path program 1 times [2024-10-24 19:17:45,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:17:45,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159638414] [2024-10-24 19:17:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:45,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:17:45,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:17:45,507 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:17:45,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-24 19:17:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:45,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 19:17:45,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:45,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:17:45,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:17:45,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 19:17:45,795 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 16 treesize of output 11 [2024-10-24 19:17:45,817 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-24 19:17:45,817 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 [2024-10-24 19:17:45,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 19:17:45,912 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 16 treesize of output 11 [2024-10-24 19:17:45,923 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-24 19:17:45,923 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 [2024-10-24 19:17:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:46,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:47,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:17:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159638414] [2024-10-24 19:17:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159638414] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:47,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:17:47,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:17:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402046640] [2024-10-24 19:17:47,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:47,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:17:47,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:17:47,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:17:47,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:17:51,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:17:56,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:18:00,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:18:01,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:18:05,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:18:10,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:18:15,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:18:19,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:18:24,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:18:28,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:18:29,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 96 [2024-10-24 19:18:29,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 185 transitions, 862 flow. Second operand has 14 states, 14 states have (on average 16.714285714285715) internal successors, (234), 14 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:29,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:29,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 96 [2024-10-24 19:18:29,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand