./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:01:28,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:01:28,856 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:01:28,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:01:28,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:01:28,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:01:28,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:01:28,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:01:28,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:01:28,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:01:28,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:01:28,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:01:28,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:01:28,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:01:28,885 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:01:28,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:01:28,888 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:01:28,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:01:28,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:01:28,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:01:28,890 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:01:28,894 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:01:28,894 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:01:28,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:01:28,895 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:01:28,895 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:01:28,896 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:01:28,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:01:28,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:01:28,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:01:28,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:01:28,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:01:28,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:01:28,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:01:28,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:01:28,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:01:28,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:01:28,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:01:28,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:01:28,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:01:28,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:01:28,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:01:28,906 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 [2024-10-11 20:01:29,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:01:29,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:01:29,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:01:29,195 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:01:29,195 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:01:29,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-10-11 20:01:30,629 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:01:30,803 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:01:30,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-10-11 20:01:30,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/671401a6e/3f66bb7b0b0a41228e21634702aff4fc/FLAG73ef2432f [2024-10-11 20:01:30,826 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/671401a6e/3f66bb7b0b0a41228e21634702aff4fc [2024-10-11 20:01:30,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:01:30,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:01:30,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:30,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:01:30,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:01:30,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:30" (1/1) ... [2024-10-11 20:01:30,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3daa726a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:30, skipping insertion in model container [2024-10-11 20:01:30,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:30" (1/1) ... [2024-10-11 20:01:30,856 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:01:31,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:31,080 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 20:01:31,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@17cbd7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:31, skipping insertion in model container [2024-10-11 20:01:31,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:31,081 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 20:01:31,082 INFO L158 Benchmark]: Toolchain (without parser) took 252.01ms. Allocated memory is still 182.5MB. Free memory was 127.6MB in the beginning and 115.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:01:31,083 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 182.5MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:01:31,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.70ms. Allocated memory is still 182.5MB. Free memory was 127.1MB in the beginning and 115.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:01:31,085 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 182.5MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.70ms. Allocated memory is still 182.5MB. Free memory was 127.1MB in the beginning and 115.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 112]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:01:33,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:01:33,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 20:01:33,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:01:33,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:01:33,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:01:33,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:01:33,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:01:33,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:01:33,139 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:01:33,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:01:33,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:01:33,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:01:33,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:01:33,143 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:01:33,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:01:33,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:01:33,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:01:33,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:01:33,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:01:33,148 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:01:33,149 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:01:33,149 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:01:33,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:01:33,150 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:01:33,150 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 20:01:33,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:01:33,150 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 20:01:33,151 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:01:33,151 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:01:33,151 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:01:33,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:01:33,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:01:33,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:01:33,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:01:33,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:01:33,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:01:33,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:01:33,166 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 20:01:33,167 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 20:01:33,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:01:33,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:01:33,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:01:33,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:01:33,168 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 20:01:33,168 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 [2024-10-11 20:01:33,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:01:33,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:01:33,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:01:33,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:01:33,518 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:01:33,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-10-11 20:01:35,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:01:35,259 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:01:35,260 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-10-11 20:01:35,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/20674733b/9c9a1ac11e454696ae020dfaebab79f0/FLAGd7c7796b4 [2024-10-11 20:01:35,625 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/20674733b/9c9a1ac11e454696ae020dfaebab79f0 [2024-10-11 20:01:35,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:01:35,628 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:01:35,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:35,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:01:35,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:01:35,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:35" (1/1) ... [2024-10-11 20:01:35,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e64ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:35, skipping insertion in model container [2024-10-11 20:01:35,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:35" (1/1) ... [2024-10-11 20:01:35,657 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:01:35,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:35,915 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 20:01:35,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:01:35,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:35,957 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:01:35,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:36,039 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:01:36,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36 WrapperNode [2024-10-11 20:01:36,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:36,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:01:36,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:01:36,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:01:36,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,091 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 110 [2024-10-11 20:01:36,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:01:36,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:01:36,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:01:36,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:01:36,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,133 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 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]. [2024-10-11 20:01:36,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:01:36,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:01:36,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:01:36,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:01:36,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (1/1) ... [2024-10-11 20:01:36,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:01:36,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:36,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 20:01:36,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 20:01:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:01:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 20:01:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 20:01:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 20:01:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 20:01:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:01:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:01:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:01:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:01:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 20:01:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 20:01:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 20:01:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 20:01:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 20:01:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:01:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:01:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 20:01:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 20:01:36,259 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 20:01:36,394 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:01:36,396 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:01:36,848 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:01:36,849 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:01:37,146 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:01:37,147 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-11 20:01:37,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:01:37 BoogieIcfgContainer [2024-10-11 20:01:37,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:01:37,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:01:37,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:01:37,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:01:37,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:01:35" (1/3) ... [2024-10-11 20:01:37,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7596b62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:01:37, skipping insertion in model container [2024-10-11 20:01:37,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:36" (2/3) ... [2024-10-11 20:01:37,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7596b62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:01:37, skipping insertion in model container [2024-10-11 20:01:37,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:01:37" (3/3) ... [2024-10-11 20:01:37,158 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-10-11 20:01:37,175 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:01:37,175 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-11 20:01:37,176 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:01:37,251 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 20:01:37,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 55 transitions, 131 flow [2024-10-11 20:01:37,322 INFO L124 PetriNetUnfolderBase]: 6/52 cut-off events. [2024-10-11 20:01:37,323 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 20:01:37,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 52 events. 6/52 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 106 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-11 20:01:37,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 55 transitions, 131 flow [2024-10-11 20:01:37,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 120 flow [2024-10-11 20:01:37,344 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:01:37,352 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;@2b53fe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:01:37,354 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-11 20:01:37,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:01:37,358 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 20:01:37,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 20:01:37,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:37,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:01:37,359 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:37,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:37,364 INFO L85 PathProgramCache]: Analyzing trace with hash 481166, now seen corresponding path program 1 times [2024-10-11 20:01:37,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640116792] [2024-10-11 20:01:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:37,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:37,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:37,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 20:01:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:37,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:01:37,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:37,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:01:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:37,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:37,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640116792] [2024-10-11 20:01:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640116792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:37,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:01:37,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624663749] [2024-10-11 20:01:37,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:37,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:01:37,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:37,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:01:37,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:01:37,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-11 20:01:37,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:37,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:37,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-11 20:01:37,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:37,999 INFO L124 PetriNetUnfolderBase]: 1015/1568 cut-off events. [2024-10-11 20:01:38,000 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-10-11 20:01:38,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3088 conditions, 1568 events. 1015/1568 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7782 event pairs, 759 based on Foata normal form. 1/1179 useless extension candidates. Maximal degree in co-relation 2640. Up to 1390 conditions per place. [2024-10-11 20:01:38,016 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 32 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-10-11 20:01:38,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 180 flow [2024-10-11 20:01:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:01:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:01:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-10-11 20:01:38,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-10-11 20:01:38,031 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 120 flow. Second operand 3 states and 88 transitions. [2024-10-11 20:01:38,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 180 flow [2024-10-11 20:01:38,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 168 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 20:01:38,039 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 104 flow [2024-10-11 20:01:38,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-10-11 20:01:38,044 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -8 predicate places. [2024-10-11 20:01:38,044 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 104 flow [2024-10-11 20:01:38,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:38,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:38,045 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:01:38,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 20:01:38,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:38,246 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:38,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash 481167, now seen corresponding path program 1 times [2024-10-11 20:01:38,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:38,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329311040] [2024-10-11 20:01:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:38,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:38,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:38,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:38,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 20:01:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:38,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:01:38,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:38,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:38,418 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:38,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:38,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329311040] [2024-10-11 20:01:38,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329311040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:38,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:38,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:38,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687855102] [2024-10-11 20:01:38,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:38,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:38,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:38,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:38,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:38,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-11 20:01:38,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:38,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:38,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-11 20:01:38,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:38,898 INFO L124 PetriNetUnfolderBase]: 1017/1574 cut-off events. [2024-10-11 20:01:38,898 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-11 20:01:38,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 1574 events. 1017/1574 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7893 event pairs, 759 based on Foata normal form. 0/1182 useless extension candidates. Maximal degree in co-relation 2975. Up to 1399 conditions per place. [2024-10-11 20:01:38,908 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 35 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-10-11 20:01:38,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 202 flow [2024-10-11 20:01:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-10-11 20:01:38,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-10-11 20:01:38,911 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 104 flow. Second operand 4 states and 112 transitions. [2024-10-11 20:01:38,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 202 flow [2024-10-11 20:01:38,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:38,914 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 156 flow [2024-10-11 20:01:38,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2024-10-11 20:01:38,915 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -4 predicate places. [2024-10-11 20:01:38,915 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 156 flow [2024-10-11 20:01:38,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:38,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:38,916 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 20:01:38,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:39,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:39,117 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:39,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:39,118 INFO L85 PathProgramCache]: Analyzing trace with hash 462416569, now seen corresponding path program 1 times [2024-10-11 20:01:39,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:39,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17465853] [2024-10-11 20:01:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:39,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:39,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:39,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:39,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 20:01:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:39,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:01:39,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:39,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:39,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:39,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:39,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17465853] [2024-10-11 20:01:39,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17465853] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:39,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:39,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:01:39,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846841802] [2024-10-11 20:01:39,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:39,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:01:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:39,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:01:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:01:39,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-11 20:01:39,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 156 flow. Second operand has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:39,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:39,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-11 20:01:39,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:41,111 INFO L124 PetriNetUnfolderBase]: 1023/1592 cut-off events. [2024-10-11 20:01:41,112 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-11 20:01:41,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 1592 events. 1023/1592 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7977 event pairs, 759 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 2986. Up to 1402 conditions per place. [2024-10-11 20:01:41,124 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 35 selfloop transitions, 25 changer transitions 0/71 dead transitions. [2024-10-11 20:01:41,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 354 flow [2024-10-11 20:01:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:01:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:01:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-10-11 20:01:41,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4290909090909091 [2024-10-11 20:01:41,131 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 156 flow. Second operand 10 states and 236 transitions. [2024-10-11 20:01:41,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 354 flow [2024-10-11 20:01:41,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 20:01:41,137 INFO L231 Difference]: Finished difference. Result has 63 places, 71 transitions, 318 flow [2024-10-11 20:01:41,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=318, PETRI_PLACES=63, PETRI_TRANSITIONS=71} [2024-10-11 20:01:41,138 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-10-11 20:01:41,139 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 71 transitions, 318 flow [2024-10-11 20:01:41,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:41,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:41,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:41,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 20:01:41,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:41,341 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:41,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:41,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2020645863, now seen corresponding path program 1 times [2024-10-11 20:01:41,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:41,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603892851] [2024-10-11 20:01:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:41,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:41,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:41,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:41,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 20:01:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:41,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:01:41,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:41,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:41,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:41,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603892851] [2024-10-11 20:01:41,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603892851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:41,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:41,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:01:41,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046691572] [2024-10-11 20:01:41,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:41,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:01:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:01:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:01:41,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-10-11 20:01:41,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 71 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:41,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:41,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-10-11 20:01:41,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:42,116 INFO L124 PetriNetUnfolderBase]: 2219/3460 cut-off events. [2024-10-11 20:01:42,116 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-10-11 20:01:42,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6736 conditions, 3460 events. 2219/3460 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 20152 event pairs, 1518 based on Foata normal form. 1/2470 useless extension candidates. Maximal degree in co-relation 6674. Up to 1815 conditions per place. [2024-10-11 20:01:42,138 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 93 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2024-10-11 20:01:42,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 117 transitions, 634 flow [2024-10-11 20:01:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:01:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:01:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-10-11 20:01:42,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5969696969696969 [2024-10-11 20:01:42,141 INFO L175 Difference]: Start difference. First operand has 63 places, 71 transitions, 318 flow. Second operand 6 states and 197 transitions. [2024-10-11 20:01:42,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 117 transitions, 634 flow [2024-10-11 20:01:42,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 117 transitions, 567 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-11 20:01:42,146 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 303 flow [2024-10-11 20:01:42,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2024-10-11 20:01:42,147 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-10-11 20:01:42,147 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 303 flow [2024-10-11 20:01:42,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:42,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:42,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:42,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 20:01:42,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:42,352 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:42,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash 491463796, now seen corresponding path program 1 times [2024-10-11 20:01:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:42,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786321098] [2024-10-11 20:01:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:42,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:42,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:42,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:42,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 20:01:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:42,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:01:42,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:42,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:01:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:42,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:42,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786321098] [2024-10-11 20:01:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786321098] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:42,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:42,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:01:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601843291] [2024-10-11 20:01:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:42,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:42,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-11 20:01:42,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:42,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:42,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-11 20:01:42,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:42,834 INFO L124 PetriNetUnfolderBase]: 1480/2523 cut-off events. [2024-10-11 20:01:42,834 INFO L125 PetriNetUnfolderBase]: For 712/726 co-relation queries the response was YES. [2024-10-11 20:01:42,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5365 conditions, 2523 events. 1480/2523 cut-off events. For 712/726 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15043 event pairs, 1153 based on Foata normal form. 0/1958 useless extension candidates. Maximal degree in co-relation 5308. Up to 2051 conditions per place. [2024-10-11 20:01:42,850 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 52 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-10-11 20:01:42,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 417 flow [2024-10-11 20:01:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-11 20:01:42,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-10-11 20:01:42,852 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 303 flow. Second operand 4 states and 102 transitions. [2024-10-11 20:01:42,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 417 flow [2024-10-11 20:01:42,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 406 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 20:01:42,861 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 302 flow [2024-10-11 20:01:42,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2024-10-11 20:01:42,862 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-10-11 20:01:42,862 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 302 flow [2024-10-11 20:01:42,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:42,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:42,862 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:42,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 20:01:43,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:43,064 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:43,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash 491463797, now seen corresponding path program 1 times [2024-10-11 20:01:43,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:43,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867885239] [2024-10-11 20:01:43,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:43,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:43,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:43,067 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:43,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 20:01:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:43,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 20:01:43,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:43,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:43,310 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:43,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:43,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867885239] [2024-10-11 20:01:43,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867885239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:43,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:43,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:01:43,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752984760] [2024-10-11 20:01:43,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:43,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 20:01:43,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:43,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 20:01:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 20:01:43,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-10-11 20:01:43,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:43,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:43,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-10-11 20:01:43,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:44,173 INFO L124 PetriNetUnfolderBase]: 2980/4701 cut-off events. [2024-10-11 20:01:44,174 INFO L125 PetriNetUnfolderBase]: For 1633/1779 co-relation queries the response was YES. [2024-10-11 20:01:44,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10213 conditions, 4701 events. 2980/4701 cut-off events. For 1633/1779 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 27291 event pairs, 1291 based on Foata normal form. 0/3670 useless extension candidates. Maximal degree in co-relation 10155. Up to 2491 conditions per place. [2024-10-11 20:01:44,211 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 83 selfloop transitions, 12 changer transitions 0/107 dead transitions. [2024-10-11 20:01:44,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 590 flow [2024-10-11 20:01:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:01:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:01:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-10-11 20:01:44,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-10-11 20:01:44,214 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 302 flow. Second operand 6 states and 174 transitions. [2024-10-11 20:01:44,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 590 flow [2024-10-11 20:01:44,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 107 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:44,219 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 345 flow [2024-10-11 20:01:44,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2024-10-11 20:01:44,219 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-10-11 20:01:44,220 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 345 flow [2024-10-11 20:01:44,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:44,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:44,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:44,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 20:01:44,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:44,421 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:44,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:44,422 INFO L85 PathProgramCache]: Analyzing trace with hash 491463794, now seen corresponding path program 1 times [2024-10-11 20:01:44,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:44,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161000762] [2024-10-11 20:01:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:44,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:44,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:44,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:44,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 20:01:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:44,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:01:44,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:44,562 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:44,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:44,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161000762] [2024-10-11 20:01:44,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161000762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:44,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:44,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:01:44,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183596708] [2024-10-11 20:01:44,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:44,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:01:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:44,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:01:44,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:01:44,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-10-11 20:01:44,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:44,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:44,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-10-11 20:01:44,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:45,040 INFO L124 PetriNetUnfolderBase]: 1886/2949 cut-off events. [2024-10-11 20:01:45,040 INFO L125 PetriNetUnfolderBase]: For 1546/1766 co-relation queries the response was YES. [2024-10-11 20:01:45,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 2949 events. 1886/2949 cut-off events. For 1546/1766 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14819 event pairs, 1293 based on Foata normal form. 82/2711 useless extension candidates. Maximal degree in co-relation 7102. Up to 2166 conditions per place. [2024-10-11 20:01:45,062 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 81 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2024-10-11 20:01:45,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 619 flow [2024-10-11 20:01:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:01:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:01:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-10-11 20:01:45,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5424242424242425 [2024-10-11 20:01:45,064 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 345 flow. Second operand 6 states and 179 transitions. [2024-10-11 20:01:45,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 619 flow [2024-10-11 20:01:45,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 600 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:01:45,069 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 374 flow [2024-10-11 20:01:45,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-10-11 20:01:45,071 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-10-11 20:01:45,072 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 374 flow [2024-10-11 20:01:45,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:45,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:45,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:45,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 20:01:45,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:45,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:45,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash -921472591, now seen corresponding path program 1 times [2024-10-11 20:01:45,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:45,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845839655] [2024-10-11 20:01:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:45,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:45,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:45,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:45,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 20:01:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:45,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:01:45,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:45,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:01:45,397 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 20:01:45,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 20:01:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 20:01:45,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:45,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:45,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845839655] [2024-10-11 20:01:45,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845839655] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:45,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:45,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:45,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669342715] [2024-10-11 20:01:45,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:45,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:45,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:45,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-11 20:01:45,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:45,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:45,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-11 20:01:45,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:45,754 INFO L124 PetriNetUnfolderBase]: 1469/2415 cut-off events. [2024-10-11 20:01:45,754 INFO L125 PetriNetUnfolderBase]: For 1714/2030 co-relation queries the response was YES. [2024-10-11 20:01:45,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6091 conditions, 2415 events. 1469/2415 cut-off events. For 1714/2030 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12743 event pairs, 1085 based on Foata normal form. 24/2211 useless extension candidates. Maximal degree in co-relation 6028. Up to 2016 conditions per place. [2024-10-11 20:01:45,769 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 51 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-10-11 20:01:45,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 496 flow [2024-10-11 20:01:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:01:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:01:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-10-11 20:01:45,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4109090909090909 [2024-10-11 20:01:45,771 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 374 flow. Second operand 5 states and 113 transitions. [2024-10-11 20:01:45,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 496 flow [2024-10-11 20:01:45,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 478 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:01:45,776 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 376 flow [2024-10-11 20:01:45,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-10-11 20:01:45,777 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-10-11 20:01:45,777 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 376 flow [2024-10-11 20:01:45,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:45,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:45,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:45,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 20:01:45,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:45,978 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:45,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash -921472590, now seen corresponding path program 1 times [2024-10-11 20:01:45,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:45,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557763491] [2024-10-11 20:01:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:45,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:45,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:45,981 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:45,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 20:01:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:46,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:01:46,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:46,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:46,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:01:46,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 20:01:46,222 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 [2024-10-11 20:01:46,233 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 20:01:46,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 20:01:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:01:46,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:01:46,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:46,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557763491] [2024-10-11 20:01:46,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557763491] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:46,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:46,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 20:01:46,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768816416] [2024-10-11 20:01:46,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:46,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 20:01:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:46,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 20:01:46,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 20:01:47,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-10-11 20:01:47,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 376 flow. Second operand has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:47,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:47,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-10-11 20:01:47,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:50,104 INFO L124 PetriNetUnfolderBase]: 6525/10417 cut-off events. [2024-10-11 20:01:50,104 INFO L125 PetriNetUnfolderBase]: For 5858/6789 co-relation queries the response was YES. [2024-10-11 20:01:50,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25771 conditions, 10417 events. 6525/10417 cut-off events. For 5858/6789 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 69887 event pairs, 3530 based on Foata normal form. 94/9260 useless extension candidates. Maximal degree in co-relation 19949. Up to 2636 conditions per place. [2024-10-11 20:01:50,178 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 152 selfloop transitions, 56 changer transitions 0/218 dead transitions. [2024-10-11 20:01:50,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 218 transitions, 1408 flow [2024-10-11 20:01:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 20:01:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 20:01:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 468 transitions. [2024-10-11 20:01:50,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4051948051948052 [2024-10-11 20:01:50,181 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 376 flow. Second operand 21 states and 468 transitions. [2024-10-11 20:01:50,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 218 transitions, 1408 flow [2024-10-11 20:01:50,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 218 transitions, 1380 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:01:50,197 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 678 flow [2024-10-11 20:01:50,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=678, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2024-10-11 20:01:50,198 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 39 predicate places. [2024-10-11 20:01:50,198 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 678 flow [2024-10-11 20:01:50,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:50,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:50,199 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:01:50,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 20:01:50,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:50,400 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:01:50,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash -538225353, now seen corresponding path program 2 times [2024-10-11 20:01:50,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:50,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466543552] [2024-10-11 20:01:50,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:01:50,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:50,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:50,403 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:50,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 20:01:50,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:01:50,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:50,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:01:50,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:50,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:50,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:51,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:51,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466543552] [2024-10-11 20:01:51,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466543552] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:51,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:51,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:01:51,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4624990] [2024-10-11 20:01:51,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:51,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:01:51,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:51,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:01:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:01:51,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-11 20:01:51,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 108 transitions, 678 flow. Second operand has 14 states, 14 states have (on average 18.571428571428573) internal successors, (260), 14 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:51,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:51,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-11 20:01:51,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:00,327 INFO L124 PetriNetUnfolderBase]: 5692/9381 cut-off events. [2024-10-11 20:02:00,327 INFO L125 PetriNetUnfolderBase]: For 12433/14096 co-relation queries the response was YES. [2024-10-11 20:02:00,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27232 conditions, 9381 events. 5692/9381 cut-off events. For 12433/14096 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 63974 event pairs, 4027 based on Foata normal form. 200/8702 useless extension candidates. Maximal degree in co-relation 20738. Up to 7706 conditions per place. [2024-10-11 20:02:00,492 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 53 selfloop transitions, 104 changer transitions 0/168 dead transitions. [2024-10-11 20:02:00,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 168 transitions, 1412 flow [2024-10-11 20:02:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:02:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:02:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 479 transitions. [2024-10-11 20:02:00,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3958677685950413 [2024-10-11 20:02:00,496 INFO L175 Difference]: Start difference. First operand has 94 places, 108 transitions, 678 flow. Second operand 22 states and 479 transitions. [2024-10-11 20:02:00,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 168 transitions, 1412 flow [2024-10-11 20:02:00,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 168 transitions, 1381 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 20:02:00,545 INFO L231 Difference]: Finished difference. Result has 119 places, 168 transitions, 1365 flow [2024-10-11 20:02:00,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1365, PETRI_PLACES=119, PETRI_TRANSITIONS=168} [2024-10-11 20:02:00,546 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-10-11 20:02:00,546 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 168 transitions, 1365 flow [2024-10-11 20:02:00,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.571428571428573) internal successors, (260), 14 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:00,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:00,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:00,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-11 20:02:00,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:00,747 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:02:00,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash -795889731, now seen corresponding path program 1 times [2024-10-11 20:02:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:00,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345845188] [2024-10-11 20:02:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:00,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:00,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:00,751 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:00,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 20:02:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:00,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:02:00,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:00,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:02:00,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:02:00,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 20:02:00,939 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 [2024-10-11 20:02:00,945 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 20:02:00,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 20:02:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:01,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:01,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:01,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345845188] [2024-10-11 20:02:01,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345845188] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:01,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:01,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 20:02:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644240465] [2024-10-11 20:02:01,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:01,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 20:02:01,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 20:02:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 20:02:02,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-10-11 20:02:02,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 168 transitions, 1365 flow. Second operand has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:02,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:02,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-10-11 20:02:02,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:04,658 INFO L124 PetriNetUnfolderBase]: 4896/8080 cut-off events. [2024-10-11 20:02:04,658 INFO L125 PetriNetUnfolderBase]: For 11737/14048 co-relation queries the response was YES. [2024-10-11 20:02:04,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24157 conditions, 8080 events. 4896/8080 cut-off events. For 11737/14048 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 53222 event pairs, 1968 based on Foata normal form. 56/7613 useless extension candidates. Maximal degree in co-relation 23969. Up to 1550 conditions per place. [2024-10-11 20:02:04,714 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 175 selfloop transitions, 120 changer transitions 0/306 dead transitions. [2024-10-11 20:02:04,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 306 transitions, 2616 flow [2024-10-11 20:02:04,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 20:02:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 20:02:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 533 transitions. [2024-10-11 20:02:04,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42134387351778657 [2024-10-11 20:02:04,718 INFO L175 Difference]: Start difference. First operand has 119 places, 168 transitions, 1365 flow. Second operand 23 states and 533 transitions. [2024-10-11 20:02:04,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 306 transitions, 2616 flow [2024-10-11 20:02:04,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 306 transitions, 2302 flow, removed 101 selfloop flow, removed 9 redundant places. [2024-10-11 20:02:04,758 INFO L231 Difference]: Finished difference. Result has 134 places, 186 transitions, 1448 flow [2024-10-11 20:02:04,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1448, PETRI_PLACES=134, PETRI_TRANSITIONS=186} [2024-10-11 20:02:04,760 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2024-10-11 20:02:04,761 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 186 transitions, 1448 flow [2024-10-11 20:02:04,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:04,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:04,761 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:04,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 20:02:04,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:04,962 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:02:04,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash 480798134, now seen corresponding path program 1 times [2024-10-11 20:02:04,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:04,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662015166] [2024-10-11 20:02:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:04,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:04,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:04,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:04,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 20:02:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:05,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:02:05,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:05,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:02:05,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662015166] [2024-10-11 20:02:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662015166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:02:05,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:02:05,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:02:05,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670895380] [2024-10-11 20:02:05,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:02:05,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:02:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:05,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:02:05,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:02:05,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-10-11 20:02:05,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 186 transitions, 1448 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:05,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:05,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-10-11 20:02:05,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:06,226 INFO L124 PetriNetUnfolderBase]: 7463/11054 cut-off events. [2024-10-11 20:02:06,226 INFO L125 PetriNetUnfolderBase]: For 21174/24722 co-relation queries the response was YES. [2024-10-11 20:02:06,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35862 conditions, 11054 events. 7463/11054 cut-off events. For 21174/24722 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 61263 event pairs, 1190 based on Foata normal form. 97/10954 useless extension candidates. Maximal degree in co-relation 35683. Up to 5885 conditions per place. [2024-10-11 20:02:06,287 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 291 selfloop transitions, 9 changer transitions 0/308 dead transitions. [2024-10-11 20:02:06,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 308 transitions, 2803 flow [2024-10-11 20:02:06,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:02:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:02:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-10-11 20:02:06,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363636363636364 [2024-10-11 20:02:06,289 INFO L175 Difference]: Start difference. First operand has 134 places, 186 transitions, 1448 flow. Second operand 6 states and 177 transitions. [2024-10-11 20:02:06,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 308 transitions, 2803 flow [2024-10-11 20:02:06,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 308 transitions, 2674 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-10-11 20:02:06,339 INFO L231 Difference]: Finished difference. Result has 129 places, 194 transitions, 1387 flow [2024-10-11 20:02:06,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1387, PETRI_PLACES=129, PETRI_TRANSITIONS=194} [2024-10-11 20:02:06,340 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2024-10-11 20:02:06,340 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 194 transitions, 1387 flow [2024-10-11 20:02:06,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:06,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:06,341 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:06,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 20:02:06,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:06,541 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:02:06,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:06,542 INFO L85 PathProgramCache]: Analyzing trace with hash -771879338, now seen corresponding path program 1 times [2024-10-11 20:02:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:06,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085619878] [2024-10-11 20:02:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:06,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:06,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:06,543 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:06,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 20:02:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:06,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 20:02:06,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:06,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:06,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085619878] [2024-10-11 20:02:06,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085619878] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:06,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:06,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-11 20:02:06,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152546084] [2024-10-11 20:02:06,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:06,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:02:06,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:06,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:02:06,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:02:07,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-10-11 20:02:07,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 194 transitions, 1387 flow. Second operand has 14 states, 14 states have (on average 19.714285714285715) internal successors, (276), 14 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:07,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:07,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-10-11 20:02:07,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:09,150 INFO L124 PetriNetUnfolderBase]: 8513/13847 cut-off events. [2024-10-11 20:02:09,151 INFO L125 PetriNetUnfolderBase]: For 22888/24152 co-relation queries the response was YES. [2024-10-11 20:02:09,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44373 conditions, 13847 events. 8513/13847 cut-off events. For 22888/24152 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 97594 event pairs, 4232 based on Foata normal form. 958/14375 useless extension candidates. Maximal degree in co-relation 44234. Up to 4699 conditions per place. [2024-10-11 20:02:09,240 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 184 selfloop transitions, 91 changer transitions 0/295 dead transitions. [2024-10-11 20:02:09,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 295 transitions, 2341 flow [2024-10-11 20:02:09,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 20:02:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 20:02:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 386 transitions. [2024-10-11 20:02:09,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5012987012987012 [2024-10-11 20:02:09,243 INFO L175 Difference]: Start difference. First operand has 129 places, 194 transitions, 1387 flow. Second operand 14 states and 386 transitions. [2024-10-11 20:02:09,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 295 transitions, 2341 flow [2024-10-11 20:02:09,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 295 transitions, 2319 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-10-11 20:02:09,300 INFO L231 Difference]: Finished difference. Result has 144 places, 174 transitions, 1418 flow [2024-10-11 20:02:09,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1418, PETRI_PLACES=144, PETRI_TRANSITIONS=174} [2024-10-11 20:02:09,301 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 89 predicate places. [2024-10-11 20:02:09,301 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 174 transitions, 1418 flow [2024-10-11 20:02:09,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.714285714285715) internal successors, (276), 14 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:09,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:09,302 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:09,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 20:02:09,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:09,506 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:02:09,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2121250272, now seen corresponding path program 2 times [2024-10-11 20:02:09,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:09,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701886839] [2024-10-11 20:02:09,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:02:09,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:09,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:09,508 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:09,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 20:02:09,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:02:09,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:09,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 20:02:09,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:09,597 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 1 [2024-10-11 20:02:09,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:02:09,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 20:02:09,668 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 14 treesize of output 9 [2024-10-11 20:02:09,680 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 20:02:09,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 20:02:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:02:09,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:02:10,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:10,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701886839] [2024-10-11 20:02:10,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701886839] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:10,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:10,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:02:10,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856493742] [2024-10-11 20:02:10,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:10,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:02:10,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:02:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:02:10,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-10-11 20:02:10,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 174 transitions, 1418 flow. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:10,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:10,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-10-11 20:02:10,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:13,492 INFO L124 PetriNetUnfolderBase]: 8780/14399 cut-off events. [2024-10-11 20:02:13,492 INFO L125 PetriNetUnfolderBase]: For 37061/38393 co-relation queries the response was YES. [2024-10-11 20:02:13,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52859 conditions, 14399 events. 8780/14399 cut-off events. For 37061/38393 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 103861 event pairs, 4066 based on Foata normal form. 743/14527 useless extension candidates. Maximal degree in co-relation 52699. Up to 6514 conditions per place. [2024-10-11 20:02:13,698 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 187 selfloop transitions, 52 changer transitions 0/257 dead transitions. [2024-10-11 20:02:13,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 257 transitions, 2338 flow [2024-10-11 20:02:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 20:02:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 20:02:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-10-11 20:02:13,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4396694214876033 [2024-10-11 20:02:13,700 INFO L175 Difference]: Start difference. First operand has 144 places, 174 transitions, 1418 flow. Second operand 11 states and 266 transitions. [2024-10-11 20:02:13,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 257 transitions, 2338 flow [2024-10-11 20:02:13,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 257 transitions, 2249 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-10-11 20:02:13,786 INFO L231 Difference]: Finished difference. Result has 147 places, 181 transitions, 1568 flow [2024-10-11 20:02:13,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1568, PETRI_PLACES=147, PETRI_TRANSITIONS=181} [2024-10-11 20:02:13,787 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2024-10-11 20:02:13,787 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 181 transitions, 1568 flow [2024-10-11 20:02:13,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:13,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:13,787 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:13,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 20:02:13,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:13,988 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:02:13,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:13,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1633775450, now seen corresponding path program 1 times [2024-10-11 20:02:13,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:13,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320650125] [2024-10-11 20:02:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:13,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:13,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:13,992 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:13,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 20:02:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:14,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:02:14,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:14,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:02:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 20:02:14,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 20:02:14,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:14,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320650125] [2024-10-11 20:02:14,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320650125] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:14,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:14,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-11 20:02:14,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166101130] [2024-10-11 20:02:14,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:14,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 20:02:14,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:14,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 20:02:14,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-10-11 20:02:15,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-10-11 20:02:15,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 181 transitions, 1568 flow. Second operand has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:15,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:15,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-10-11 20:02:15,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:20,270 INFO L124 PetriNetUnfolderBase]: 20032/30807 cut-off events. [2024-10-11 20:02:20,270 INFO L125 PetriNetUnfolderBase]: For 147913/156654 co-relation queries the response was YES. [2024-10-11 20:02:20,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121812 conditions, 30807 events. 20032/30807 cut-off events. For 147913/156654 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 218997 event pairs, 3075 based on Foata normal form. 474/29502 useless extension candidates. Maximal degree in co-relation 121651. Up to 7712 conditions per place. [2024-10-11 20:02:20,511 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 395 selfloop transitions, 50 changer transitions 0/464 dead transitions. [2024-10-11 20:02:20,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 464 transitions, 4906 flow [2024-10-11 20:02:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 20:02:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 20:02:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 396 transitions. [2024-10-11 20:02:20,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2024-10-11 20:02:20,513 INFO L175 Difference]: Start difference. First operand has 147 places, 181 transitions, 1568 flow. Second operand 13 states and 396 transitions. [2024-10-11 20:02:20,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 464 transitions, 4906 flow [2024-10-11 20:02:20,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 464 transitions, 4683 flow, removed 110 selfloop flow, removed 1 redundant places. [2024-10-11 20:02:20,759 INFO L231 Difference]: Finished difference. Result has 162 places, 196 transitions, 1787 flow [2024-10-11 20:02:20,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1787, PETRI_PLACES=162, PETRI_TRANSITIONS=196} [2024-10-11 20:02:20,759 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 107 predicate places. [2024-10-11 20:02:20,759 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 196 transitions, 1787 flow [2024-10-11 20:02:20,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:20,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:20,760 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:20,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-11 20:02:20,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:20,960 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:02:20,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1633775452, now seen corresponding path program 1 times [2024-10-11 20:02:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:20,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679466890] [2024-10-11 20:02:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:20,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:20,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:20,964 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:20,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 20:02:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:21,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 20:02:21,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:21,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:21,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679466890] [2024-10-11 20:02:21,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679466890] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:21,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:21,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-11 20:02:21,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521488937] [2024-10-11 20:02:21,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:21,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:02:21,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:02:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:02:21,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-10-11 20:02:21,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 196 transitions, 1787 flow. Second operand has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 14 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:21,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:21,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-10-11 20:02:21,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:24,388 INFO L124 PetriNetUnfolderBase]: 12642/19012 cut-off events. [2024-10-11 20:02:24,389 INFO L125 PetriNetUnfolderBase]: For 93034/101693 co-relation queries the response was YES. [2024-10-11 20:02:24,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79359 conditions, 19012 events. 12642/19012 cut-off events. For 93034/101693 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 117384 event pairs, 7805 based on Foata normal form. 318/18996 useless extension candidates. Maximal degree in co-relation 79192. Up to 13570 conditions per place. [2024-10-11 20:02:24,561 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 163 selfloop transitions, 91 changer transitions 0/273 dead transitions. [2024-10-11 20:02:24,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 273 transitions, 2704 flow [2024-10-11 20:02:24,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 20:02:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 20:02:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 374 transitions. [2024-10-11 20:02:24,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-10-11 20:02:24,563 INFO L175 Difference]: Start difference. First operand has 162 places, 196 transitions, 1787 flow. Second operand 14 states and 374 transitions. [2024-10-11 20:02:24,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 273 transitions, 2704 flow [2024-10-11 20:02:24,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 273 transitions, 2653 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-11 20:02:24,689 INFO L231 Difference]: Finished difference. Result has 173 places, 194 transitions, 1942 flow [2024-10-11 20:02:24,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1942, PETRI_PLACES=173, PETRI_TRANSITIONS=194} [2024-10-11 20:02:24,690 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 118 predicate places. [2024-10-11 20:02:24,690 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 194 transitions, 1942 flow [2024-10-11 20:02:24,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 14 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:24,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:24,691 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:24,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-11 20:02:24,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:24,891 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:02:24,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1587970884, now seen corresponding path program 3 times [2024-10-11 20:02:24,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:24,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775987168] [2024-10-11 20:02:24,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:02:24,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:24,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:24,893 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:24,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-11 20:02:24,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 20:02:24,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:24,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:02:24,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:25,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:02:25,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:02:25,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 20:02:25,088 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 [2024-10-11 20:02:25,099 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 20:02:25,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 20:02:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 20:02:25,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 20:02:26,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775987168] [2024-10-11 20:02:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775987168] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:26,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:02:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066424319] [2024-10-11 20:02:26,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:26,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:02:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:02:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:02:26,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-10-11 20:02:26,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 194 transitions, 1942 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 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) [2024-10-11 20:02:26,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:26,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-10-11 20:02:26,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:37,839 INFO L124 PetriNetUnfolderBase]: 36424/52220 cut-off events. [2024-10-11 20:02:37,840 INFO L125 PetriNetUnfolderBase]: For 197374/202320 co-relation queries the response was YES. [2024-10-11 20:02:38,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211531 conditions, 52220 events. 36424/52220 cut-off events. For 197374/202320 co-relation queries the response was YES. Maximal size of possible extension queue 1376. Compared 356460 event pairs, 4700 based on Foata normal form. 4465/55741 useless extension candidates. Maximal degree in co-relation 211348. Up to 13518 conditions per place. [2024-10-11 20:02:38,559 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 613 selfloop transitions, 73 changer transitions 0/708 dead transitions. [2024-10-11 20:02:38,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 708 transitions, 7004 flow [2024-10-11 20:02:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 20:02:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 20:02:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 539 transitions. [2024-10-11 20:02:38,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-10-11 20:02:38,562 INFO L175 Difference]: Start difference. First operand has 173 places, 194 transitions, 1942 flow. Second operand 18 states and 539 transitions. [2024-10-11 20:02:38,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 708 transitions, 7004 flow [2024-10-11 20:02:39,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 708 transitions, 6803 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-10-11 20:02:39,154 INFO L231 Difference]: Finished difference. Result has 185 places, 217 transitions, 2164 flow [2024-10-11 20:02:39,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2164, PETRI_PLACES=185, PETRI_TRANSITIONS=217} [2024-10-11 20:02:39,155 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 130 predicate places. [2024-10-11 20:02:39,155 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 217 transitions, 2164 flow [2024-10-11 20:02:39,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 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) [2024-10-11 20:02:39,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:39,155 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:39,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-11 20:02:39,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:39,356 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:02:39,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1502592059, now seen corresponding path program 2 times [2024-10-11 20:02:39,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:39,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298871849] [2024-10-11 20:02:39,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:02:39,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:39,358 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:39,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-11 20:02:39,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:02:39,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:39,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 20:02:39,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:39,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:02:39,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:02:39,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 20:02:39,527 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 [2024-10-11 20:02:39,540 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 20:02:39,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 20:02:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 20:02:39,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:02:39,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:39,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298871849] [2024-10-11 20:02:39,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298871849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:02:39,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:02:39,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:02:39,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77822210] [2024-10-11 20:02:39,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:02:39,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:02:39,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:02:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 20:02:39,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-11 20:02:39,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 217 transitions, 2164 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:39,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:39,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-11 20:02:39,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:45,529 INFO L124 PetriNetUnfolderBase]: 25582/38337 cut-off events. [2024-10-11 20:02:45,530 INFO L125 PetriNetUnfolderBase]: For 225427/239755 co-relation queries the response was YES. [2024-10-11 20:02:45,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177963 conditions, 38337 events. 25582/38337 cut-off events. For 225427/239755 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 264608 event pairs, 12346 based on Foata normal form. 261/37782 useless extension candidates. Maximal degree in co-relation 177785. Up to 30069 conditions per place. [2024-10-11 20:02:46,148 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 211 selfloop transitions, 57 changer transitions 0/294 dead transitions. [2024-10-11 20:02:46,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 294 transitions, 3537 flow [2024-10-11 20:02:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 20:02:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 20:02:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-10-11 20:02:46,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44675324675324674 [2024-10-11 20:02:46,151 INFO L175 Difference]: Start difference. First operand has 185 places, 217 transitions, 2164 flow. Second operand 7 states and 172 transitions. [2024-10-11 20:02:46,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 294 transitions, 3537 flow [2024-10-11 20:02:47,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 294 transitions, 3252 flow, removed 122 selfloop flow, removed 3 redundant places. [2024-10-11 20:02:47,049 INFO L231 Difference]: Finished difference. Result has 190 places, 229 transitions, 2314 flow [2024-10-11 20:02:47,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2314, PETRI_PLACES=190, PETRI_TRANSITIONS=229} [2024-10-11 20:02:47,050 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 135 predicate places. [2024-10-11 20:02:47,050 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 229 transitions, 2314 flow [2024-10-11 20:02:47,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:47,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:47,050 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:47,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-10-11 20:02:47,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:47,251 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-11 20:02:47,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1791452305, now seen corresponding path program 1 times [2024-10-11 20:02:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:47,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869534689] [2024-10-11 20:02:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:47,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:47,253 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:47,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-11 20:02:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:47,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:02:47,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:47,463 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:02:47,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:47,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869534689] [2024-10-11 20:02:47,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869534689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:02:47,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:02:47,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:02:47,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184173059] [2024-10-11 20:02:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:02:47,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:02:47,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:47,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:02:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:02:47,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-10-11 20:02:47,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 229 transitions, 2314 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:47,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:47,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-10-11 20:02:47,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand