./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.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-more-vector-add.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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:00:38,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:00:38,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:00:38,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:00:38,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:00:38,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:00:38,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:00:38,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:00:38,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:00:38,621 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:00:38,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:00:38,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:00:38,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:00:38,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:00:38,625 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:00:38,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:00:38,625 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:00:38,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:00:38,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:00:38,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:00:38,630 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:00:38,630 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:00:38,631 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:00:38,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:00:38,631 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:00:38,631 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:00:38,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:00:38,632 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:00:38,632 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:00:38,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:00:38,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:00:38,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:00:38,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:00:38,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:00:38,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:00:38,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:00:38,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:00:38,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:00:38,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:00:38,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:00:38,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:00:38,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:00:38,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-10-11 20:00:38,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:00:38,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:00:38,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:00:38,929 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:00:38,930 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:00:38,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-11 20:00:40,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:00:40,513 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:00:40,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-11 20:00:40,521 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f20d741c5/5abda584cf834f80ad6c77ff799aee79/FLAGeeed6c8da [2024-10-11 20:00:40,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f20d741c5/5abda584cf834f80ad6c77ff799aee79 [2024-10-11 20:00:40,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:00:40,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:00:40,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:00:40,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:00:40,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:00:40,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:00:40" (1/1) ... [2024-10-11 20:00:40,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0cbfa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:40, skipping insertion in model container [2024-10-11 20:00:40,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:00:40" (1/1) ... [2024-10-11 20:00:40,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:00:41,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:00:41,155 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 20:00:41,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42f23131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:41, skipping insertion in model container [2024-10-11 20:00:41,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:00:41,157 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 20:00:41,159 INFO L158 Benchmark]: Toolchain (without parser) took 275.00ms. Allocated memory is still 172.0MB. Free memory was 115.9MB in the beginning and 104.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:00:41,159 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 172.0MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:00:41,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.86ms. Allocated memory is still 172.0MB. Free memory was 115.3MB in the beginning and 104.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:00:41,162 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 172.0MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.86ms. Allocated memory is still 172.0MB. Free memory was 115.3MB in the beginning and 104.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: 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-more-vector-add.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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:00:43,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:00:43,213 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 20:00:43,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:00:43,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:00:43,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:00:43,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:00:43,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:00:43,261 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:00:43,262 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:00:43,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:00:43,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:00:43,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:00:43,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:00:43,264 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:00:43,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:00:43,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:00:43,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:00:43,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:00:43,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:00:43,266 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:00:43,266 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:00:43,267 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:00:43,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:00:43,267 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:00:43,267 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 20:00:43,268 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:00:43,268 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 20:00:43,268 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:00:43,268 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:00:43,269 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:00:43,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:00:43,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:00:43,269 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:00:43,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:00:43,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:00:43,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:00:43,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:00:43,272 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 20:00:43,272 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 20:00:43,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:00:43,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:00:43,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:00:43,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:00:43,274 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 20:00:43,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-10-11 20:00:43,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:00:43,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:00:43,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:00:43,629 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:00:43,631 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:00:43,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-11 20:00:45,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:00:45,314 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:00:45,315 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-11 20:00:45,327 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/19d62a3ec/80bcd1f0878b426c9a76526711999fc4/FLAG01eb63dc4 [2024-10-11 20:00:45,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/19d62a3ec/80bcd1f0878b426c9a76526711999fc4 [2024-10-11 20:00:45,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:00:45,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:00:45,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:00:45,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:00:45,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:00:45,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bba44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45, skipping insertion in model container [2024-10-11 20:00:45,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,381 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:00:45,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:00:45,663 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 20:00:45,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:00:45,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:00:45,703 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:00:45,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:00:45,760 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:00:45,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45 WrapperNode [2024-10-11 20:00:45,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:00:45,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:00:45,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:00:45,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:00:45,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,821 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 184 [2024-10-11 20:00:45,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:00:45,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:00:45,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:00:45,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:00:45,834 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,865 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-10-11 20:00:45,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:00:45,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:00:45,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:00:45,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:00:45,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (1/1) ... [2024-10-11 20:00:45,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:00:45,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:00:45,941 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 20:00:45,945 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 20:00:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:00:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 20:00:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 20:00:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 20:00:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 20:00:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:00:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:00:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:00:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:00:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 20:00:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 20:00:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 20:00:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:00:45,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:00:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 20:00:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 20:00:45,998 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 20:00:46,138 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:00:46,140 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:00:46,808 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:00:46,808 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:00:47,079 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:00:47,080 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-11 20:00:47,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:00:47 BoogieIcfgContainer [2024-10-11 20:00:47,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:00:47,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:00:47,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:00:47,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:00:47,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:00:45" (1/3) ... [2024-10-11 20:00:47,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745897c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:00:47, skipping insertion in model container [2024-10-11 20:00:47,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:45" (2/3) ... [2024-10-11 20:00:47,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745897c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:00:47, skipping insertion in model container [2024-10-11 20:00:47,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:00:47" (3/3) ... [2024-10-11 20:00:47,088 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2024-10-11 20:00:47,106 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:00:47,107 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-11 20:00:47,107 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:00:47,179 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 20:00:47,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 181 flow [2024-10-11 20:00:47,254 INFO L124 PetriNetUnfolderBase]: 7/77 cut-off events. [2024-10-11 20:00:47,254 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 20:00:47,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 7/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-10-11 20:00:47,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 80 transitions, 181 flow [2024-10-11 20:00:47,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 76 transitions, 170 flow [2024-10-11 20:00:47,277 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:00:47,284 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;@5ad94e42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:00:47,284 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-10-11 20:00:47,290 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:00:47,291 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 20:00:47,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 20:00:47,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:47,293 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:00:47,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-11 20:00:47,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:47,299 INFO L85 PathProgramCache]: Analyzing trace with hash 748853, now seen corresponding path program 1 times [2024-10-11 20:00:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:47,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137644487] [2024-10-11 20:00:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:47,312 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 20:00:47,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:47,313 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 20:00:47,314 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 20:00:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:47,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:00:47,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:47,481 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 20:00:47,498 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 20:00:47,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:47,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:47,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137644487] [2024-10-11 20:00:47,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137644487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:47,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:47,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:00:47,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613459025] [2024-10-11 20:00:47,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:47,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:00:47,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:47,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:00:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:00:47,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-11 20:00:47,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 20:00:47,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:47,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-11 20:00:47,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:47,890 INFO L124 PetriNetUnfolderBase]: 203/513 cut-off events. [2024-10-11 20:00:47,891 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-11 20:00:47,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 513 events. 203/513 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2754 event pairs, 124 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 732. Up to 294 conditions per place. [2024-10-11 20:00:47,899 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 31 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-10-11 20:00:47,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 224 flow [2024-10-11 20:00:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:00:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:00:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-10-11 20:00:47,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-10-11 20:00:47,914 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 170 flow. Second operand 3 states and 161 transitions. [2024-10-11 20:00:47,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 224 flow [2024-10-11 20:00:47,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 212 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 20:00:47,923 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 150 flow [2024-10-11 20:00:47,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-10-11 20:00:47,929 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -10 predicate places. [2024-10-11 20:00:47,931 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 150 flow [2024-10-11 20:00:47,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 20:00:47,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:47,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:00:47,941 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 (2)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:48,135 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 20:00:48,136 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-11 20:00:48,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash 748854, now seen corresponding path program 1 times [2024-10-11 20:00:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:48,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137695835] [2024-10-11 20:00:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:48,138 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 20:00:48,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:48,141 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 20:00:48,142 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 20:00:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:48,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:00:48,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:48,227 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 20:00:48,328 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 20:00:48,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:48,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137695835] [2024-10-11 20:00:48,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137695835] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:48,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:48,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:00:48,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102907817] [2024-10-11 20:00:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:48,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:00:48,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:00:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:00:48,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-11 20:00:48,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:00:48,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:48,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-11 20:00:48,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:48,989 INFO L124 PetriNetUnfolderBase]: 207/525 cut-off events. [2024-10-11 20:00:48,990 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 20:00:48,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 525 events. 207/525 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2791 event pairs, 124 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 801. Up to 311 conditions per place. [2024-10-11 20:00:48,995 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 36 selfloop transitions, 13 changer transitions 0/82 dead transitions. [2024-10-11 20:00:48,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 274 flow [2024-10-11 20:00:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:00:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:00:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-10-11 20:00:48,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.678125 [2024-10-11 20:00:48,999 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 150 flow. Second operand 4 states and 217 transitions. [2024-10-11 20:00:48,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 274 flow [2024-10-11 20:00:49,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:00:49,002 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 254 flow [2024-10-11 20:00:49,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2024-10-11 20:00:49,003 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2024-10-11 20:00:49,004 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 254 flow [2024-10-11 20:00:49,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:00:49,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:49,004 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 20:00:49,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 20:00:49,207 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 20:00:49,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-11 20:00:49,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash 719672954, now seen corresponding path program 1 times [2024-10-11 20:00:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:49,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779647653] [2024-10-11 20:00:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:49,210 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 20:00:49,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:49,213 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 20:00:49,215 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 20:00:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:49,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:00:49,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:49,295 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 20:00:49,453 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 20:00:49,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:49,722 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 20:00:49,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779647653] [2024-10-11 20:00:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779647653] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:49,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:49,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:00:49,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64135028] [2024-10-11 20:00:49,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:49,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:00:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:49,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:00:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:00:50,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-11 20:00:50,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 254 flow. Second operand has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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 20:00:50,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:50,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-11 20:00:50,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:53,055 INFO L124 PetriNetUnfolderBase]: 219/561 cut-off events. [2024-10-11 20:00:53,055 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-11 20:00:53,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 561 events. 219/561 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3041 event pairs, 124 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 818. Up to 314 conditions per place. [2024-10-11 20:00:53,060 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 36 selfloop transitions, 49 changer transitions 0/118 dead transitions. [2024-10-11 20:00:53,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 586 flow [2024-10-11 20:00:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:00:53,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:00:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 507 transitions. [2024-10-11 20:00:53,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63375 [2024-10-11 20:00:53,070 INFO L175 Difference]: Start difference. First operand has 73 places, 82 transitions, 254 flow. Second operand 10 states and 507 transitions. [2024-10-11 20:00:53,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 586 flow [2024-10-11 20:00:53,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 118 transitions, 586 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 20:00:53,076 INFO L231 Difference]: Finished difference. Result has 85 places, 118 transitions, 580 flow [2024-10-11 20:00:53,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=580, PETRI_PLACES=85, PETRI_TRANSITIONS=118} [2024-10-11 20:00:53,077 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2024-10-11 20:00:53,077 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 118 transitions, 580 flow [2024-10-11 20:00:53,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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 20:00:53,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:53,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:53,081 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 20:00:53,278 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 20:00:53,279 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-11 20:00:53,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:53,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2088541764, now seen corresponding path program 1 times [2024-10-11 20:00:53,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:53,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046825155] [2024-10-11 20:00:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:53,281 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 20:00:53,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:53,282 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 20:00:53,283 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 20:00:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:53,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:00:53,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:53,443 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 20:00:53,443 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:53,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:53,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046825155] [2024-10-11 20:00:53,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046825155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:53,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:53,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:00:53,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938672582] [2024-10-11 20:00:53,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:53,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:00:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:00:53,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:00:53,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2024-10-11 20:00:53,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 118 transitions, 580 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:53,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:53,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2024-10-11 20:00:53,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:53,926 INFO L124 PetriNetUnfolderBase]: 450/1109 cut-off events. [2024-10-11 20:00:53,927 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-10-11 20:00:53,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2027 conditions, 1109 events. 450/1109 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6338 event pairs, 248 based on Foata normal form. 4/834 useless extension candidates. Maximal degree in co-relation 1911. Up to 418 conditions per place. [2024-10-11 20:00:53,937 INFO L140 encePairwiseOnDemand]: 64/80 looper letters, 88 selfloop transitions, 24 changer transitions 1/149 dead transitions. [2024-10-11 20:00:53,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 149 transitions, 886 flow [2024-10-11 20:00:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:00:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:00:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 346 transitions. [2024-10-11 20:00:53,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7208333333333333 [2024-10-11 20:00:53,940 INFO L175 Difference]: Start difference. First operand has 85 places, 118 transitions, 580 flow. Second operand 6 states and 346 transitions. [2024-10-11 20:00:53,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 149 transitions, 886 flow [2024-10-11 20:00:53,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 149 transitions, 757 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-10-11 20:00:53,947 INFO L231 Difference]: Finished difference. Result has 90 places, 123 transitions, 568 flow [2024-10-11 20:00:53,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=90, PETRI_TRANSITIONS=123} [2024-10-11 20:00:53,948 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2024-10-11 20:00:53,948 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 123 transitions, 568 flow [2024-10-11 20:00:53,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:53,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:53,949 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:00:53,955 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 20:00:54,149 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 20:00:54,150 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-11 20:00:54,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:54,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1905560646, now seen corresponding path program 2 times [2024-10-11 20:00:54,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:54,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007498930] [2024-10-11 20:00:54,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:54,152 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 20:00:54,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:54,157 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 20:00:54,158 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 20:00:54,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:00:54,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:54,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:00:54,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:54,251 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 20:00:54,555 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 20:00:54,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:55,200 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 20:00:55,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:55,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007498930] [2024-10-11 20:00:55,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007498930] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:55,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:55,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:00:55,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57044091] [2024-10-11 20:00:55,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:55,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:00:55,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:55,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:00:55,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:00:57,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-11 20:00:57,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 123 transitions, 568 flow. Second operand has 14 states, 14 states have (on average 42.57142857142857) internal successors, (596), 14 states have internal predecessors, (596), 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 20:00:57,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:57,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-11 20:00:57,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:17,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:01:19,718 INFO L124 PetriNetUnfolderBase]: 415/1188 cut-off events. [2024-10-11 20:01:19,718 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-10-11 20:01:19,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2386 conditions, 1188 events. 415/1188 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7903 event pairs, 248 based on Foata normal form. 24/895 useless extension candidates. Maximal degree in co-relation 2000. Up to 585 conditions per place. [2024-10-11 20:01:19,725 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 40 selfloop transitions, 122 changer transitions 0/195 dead transitions. [2024-10-11 20:01:19,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 195 transitions, 1300 flow [2024-10-11 20:01:19,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:01:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:01:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1083 transitions. [2024-10-11 20:01:19,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153409090909091 [2024-10-11 20:01:19,729 INFO L175 Difference]: Start difference. First operand has 90 places, 123 transitions, 568 flow. Second operand 22 states and 1083 transitions. [2024-10-11 20:01:19,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 195 transitions, 1300 flow [2024-10-11 20:01:19,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 195 transitions, 1294 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 20:01:19,736 INFO L231 Difference]: Finished difference. Result has 117 places, 195 transitions, 1328 flow [2024-10-11 20:01:19,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1328, PETRI_PLACES=117, PETRI_TRANSITIONS=195} [2024-10-11 20:01:19,737 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-10-11 20:01:19,737 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 195 transitions, 1328 flow [2024-10-11 20:01:19,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 42.57142857142857) internal successors, (596), 14 states have internal predecessors, (596), 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 20:01:19,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:19,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:19,745 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 20:01:19,944 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 20:01:19,945 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-11 20:01:19,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1375548074, now seen corresponding path program 1 times [2024-10-11 20:01:19,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:19,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760040117] [2024-10-11 20:01:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:19,946 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 20:01:19,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:19,949 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 20:01:19,950 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 20:01:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:20,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:01:20,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:20,119 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 20:01:20,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:20,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:20,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760040117] [2024-10-11 20:01:20,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760040117] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:20,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:20,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 20:01:20,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501634659] [2024-10-11 20:01:20,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:20,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 20:01:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:20,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 20:01:20,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 20:01:20,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2024-10-11 20:01:20,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 195 transitions, 1328 flow. Second operand has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 states have internal predecessors, (318), 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 20:01:20,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:20,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2024-10-11 20:01:20,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:20,585 INFO L124 PetriNetUnfolderBase]: 451/1155 cut-off events. [2024-10-11 20:01:20,586 INFO L125 PetriNetUnfolderBase]: For 448/479 co-relation queries the response was YES. [2024-10-11 20:01:20,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2590 conditions, 1155 events. 451/1155 cut-off events. For 448/479 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6923 event pairs, 248 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 2429. Up to 477 conditions per place. [2024-10-11 20:01:20,594 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 137 selfloop transitions, 42 changer transitions 3/218 dead transitions. [2024-10-11 20:01:20,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 218 transitions, 1754 flow [2024-10-11 20:01:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:01:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:01:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 339 transitions. [2024-10-11 20:01:20,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-10-11 20:01:20,596 INFO L175 Difference]: Start difference. First operand has 117 places, 195 transitions, 1328 flow. Second operand 6 states and 339 transitions. [2024-10-11 20:01:20,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 218 transitions, 1754 flow [2024-10-11 20:01:20,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 218 transitions, 1444 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-10-11 20:01:20,608 INFO L231 Difference]: Finished difference. Result has 115 places, 197 transitions, 1118 flow [2024-10-11 20:01:20,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1118, PETRI_PLACES=115, PETRI_TRANSITIONS=197} [2024-10-11 20:01:20,612 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 36 predicate places. [2024-10-11 20:01:20,612 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 197 transitions, 1118 flow [2024-10-11 20:01:20,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 states have internal predecessors, (318), 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 20:01:20,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:20,613 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:20,619 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 20:01:20,813 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 20:01:20,814 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-11 20:01:20,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash 932352663, now seen corresponding path program 1 times [2024-10-11 20:01:20,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:20,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673331517] [2024-10-11 20:01:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:20,815 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 20:01:20,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:20,816 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 20:01:20,817 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 20:01:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:20,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:01:20,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:20,999 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 20:01:20,999 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:20,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673331517] [2024-10-11 20:01:20,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673331517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:20,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:21,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 20:01:21,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837261716] [2024-10-11 20:01:21,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:21,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:01:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:01:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 20:01:21,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2024-10-11 20:01:21,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 197 transitions, 1118 flow. Second operand has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 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 20:01:21,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:21,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2024-10-11 20:01:21,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:21,443 INFO L124 PetriNetUnfolderBase]: 418/916 cut-off events. [2024-10-11 20:01:21,443 INFO L125 PetriNetUnfolderBase]: For 715/772 co-relation queries the response was YES. [2024-10-11 20:01:21,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 916 events. 418/916 cut-off events. For 715/772 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4532 event pairs, 248 based on Foata normal form. 0/754 useless extension candidates. Maximal degree in co-relation 2230. Up to 461 conditions per place. [2024-10-11 20:01:21,451 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 115 selfloop transitions, 35 changer transitions 29/215 dead transitions. [2024-10-11 20:01:21,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 215 transitions, 1536 flow [2024-10-11 20:01:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:01:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:01:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 336 transitions. [2024-10-11 20:01:21,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-11 20:01:21,457 INFO L175 Difference]: Start difference. First operand has 115 places, 197 transitions, 1118 flow. Second operand 6 states and 336 transitions. [2024-10-11 20:01:21,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 215 transitions, 1536 flow [2024-10-11 20:01:21,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 215 transitions, 1458 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:01:21,468 INFO L231 Difference]: Finished difference. Result has 119 places, 186 transitions, 1040 flow [2024-10-11 20:01:21,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1040, PETRI_PLACES=119, PETRI_TRANSITIONS=186} [2024-10-11 20:01:21,470 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 40 predicate places. [2024-10-11 20:01:21,470 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 186 transitions, 1040 flow [2024-10-11 20:01:21,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 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 20:01:21,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:21,472 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:21,477 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 (8)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:21,673 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 20:01:21,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-11 20:01:21,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:21,674 INFO L85 PathProgramCache]: Analyzing trace with hash -720143873, now seen corresponding path program 1 times [2024-10-11 20:01:21,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:21,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628555915] [2024-10-11 20:01:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:21,674 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 20:01:21,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:21,677 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 20:01:21,678 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 20:01:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:21,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:01:21,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:21,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:01:21,841 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 20:01:21,842 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 20:01:21,878 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 20:01:21,879 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 20:01:21,899 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 20:01:21,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 20:01:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:01:21,921 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:21,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:21,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628555915] [2024-10-11 20:01:21,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628555915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:21,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:21,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:21,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985678839] [2024-10-11 20:01:21,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:21,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:21,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:22,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 80 [2024-10-11 20:01:22,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 186 transitions, 1040 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:22,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:22,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 80 [2024-10-11 20:01:22,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:22,266 INFO L124 PetriNetUnfolderBase]: 469/1025 cut-off events. [2024-10-11 20:01:22,267 INFO L125 PetriNetUnfolderBase]: For 476/556 co-relation queries the response was YES. [2024-10-11 20:01:22,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 1025 events. 469/1025 cut-off events. For 476/556 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5914 event pairs, 306 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 2280. Up to 630 conditions per place. [2024-10-11 20:01:22,277 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 131 selfloop transitions, 21 changer transitions 0/183 dead transitions. [2024-10-11 20:01:22,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 183 transitions, 1338 flow [2024-10-11 20:01:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:01:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:01:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-10-11 20:01:22,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-10-11 20:01:22,280 INFO L175 Difference]: Start difference. First operand has 119 places, 186 transitions, 1040 flow. Second operand 5 states and 214 transitions. [2024-10-11 20:01:22,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 183 transitions, 1338 flow [2024-10-11 20:01:22,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 183 transitions, 1102 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-10-11 20:01:22,287 INFO L231 Difference]: Finished difference. Result has 99 places, 183 transitions, 840 flow [2024-10-11 20:01:22,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=99, PETRI_TRANSITIONS=183} [2024-10-11 20:01:22,290 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2024-10-11 20:01:22,291 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 183 transitions, 840 flow [2024-10-11 20:01:22,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:22,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:22,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:22,299 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 (9)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:22,492 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 20:01:22,493 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-11 20:01:22,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash -720143872, now seen corresponding path program 1 times [2024-10-11 20:01:22,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:22,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064932051] [2024-10-11 20:01:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:22,494 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 20:01:22,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:22,495 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 20:01:22,496 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 20:01:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:22,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 20:01:22,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:22,634 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 20:01:22,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:01:22,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 20:01:22,804 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 20:01:22,827 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 20:01:22,828 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 20:01:22,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 20:01:22,923 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 20:01:22,934 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 20:01:22,934 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 20:01:23,010 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-10-11 20:01:23,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-10-11 20:01:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 20:01:23,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 20:01:24,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064932051] [2024-10-11 20:01:24,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064932051] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:24,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:24,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-11 20:01:24,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107236925] [2024-10-11 20:01:24,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:24,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 20:01:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 20:01:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-11 20:01:33,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 20:01:40,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 20:01:46,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 20:01:52,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 20:01:58,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 20:02:02,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 20:02:02,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 80 [2024-10-11 20:02:02,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 183 transitions, 840 flow. Second operand has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 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 20:02:02,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:02,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 80 [2024-10-11 20:02:02,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:08,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 20:02:13,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]