./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-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:41:00,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:41:00,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:41:00,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:41:00,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:41:01,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:41:01,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:41:01,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:41:01,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:41:01,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:41:01,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:41:01,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:41:01,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:41:01,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:41:01,027 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:41:01,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:41:01,027 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:41:01,028 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:41:01,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:41:01,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:41:01,029 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:41:01,030 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:41:01,030 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:41:01,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:41:01,032 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:41:01,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:41:01,032 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:41:01,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:41:01,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:41:01,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:41:01,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:41:01,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:41:01,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:41:01,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:41:01,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:41:01,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:41:01,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:41:01,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:41:01,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:41:01,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:41:01,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:41:01,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:41:01,036 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-10-13 12:41:01,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:41:01,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:41:01,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:41:01,341 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:41:01,342 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:41:01,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-10-13 12:41:02,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:41:03,066 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:41:03,067 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-10-13 12:41:03,080 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/584dda85c/b87c1c78c83443048fc4376360c3ccd2/FLAG187c0ca1a [2024-10-13 12:41:03,432 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/584dda85c/b87c1c78c83443048fc4376360c3ccd2 [2024-10-13 12:41:03,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:41:03,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:41:03,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:41:03,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:41:03,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:41:03,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:03" (1/1) ... [2024-10-13 12:41:03,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2284d9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:03, skipping insertion in model container [2024-10-13 12:41:03,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:03" (1/1) ... [2024-10-13 12:41:03,474 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:41:03,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:41:03,721 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) [2024-10-13 12:41:03,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5db6c77b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:03, skipping insertion in model container [2024-10-13 12:41:03,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:41:03,724 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:41:03,726 INFO L158 Benchmark]: Toolchain (without parser) took 289.39ms. Allocated memory is still 184.5MB. Free memory was 130.5MB in the beginning and 118.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:41:03,726 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 184.5MB. Free memory was 148.1MB in the beginning and 147.8MB in the end (delta: 226.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:41:03,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.07ms. Allocated memory is still 184.5MB. Free memory was 130.5MB in the beginning and 118.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:41:03,728 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 184.5MB. Free memory was 148.1MB in the beginning and 147.8MB in the end (delta: 226.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.07ms. Allocated memory is still 184.5MB. Free memory was 130.5MB in the beginning and 118.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 165]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:41:05,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:41:05,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:41:05,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:41:05,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:41:05,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:41:05,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:41:05,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:41:05,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:41:05,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:41:05,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:41:05,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:41:05,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:41:05,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:41:05,886 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:41:05,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:41:05,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:41:05,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:41:05,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:41:05,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:41:05,888 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:41:05,889 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:41:05,890 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:41:05,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:41:05,891 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:41:05,891 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:41:05,891 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:41:05,892 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:41:05,892 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:41:05,892 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:41:05,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:41:05,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:41:05,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:41:05,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:41:05,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:41:05,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:41:05,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:41:05,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:41:05,895 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:41:05,895 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:41:05,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:41:05,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:41:05,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:41:05,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:41:05,897 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:41:05,897 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-10-13 12:41:06,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:41:06,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:41:06,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:41:06,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:41:06,266 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:41:06,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-10-13 12:41:07,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:41:08,091 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:41:08,092 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-10-13 12:41:08,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b76d6a100/13c2bc47ca654a44b38c7d3283d91d41/FLAG4b8f75424 [2024-10-13 12:41:08,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b76d6a100/13c2bc47ca654a44b38c7d3283d91d41 [2024-10-13 12:41:08,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:41:08,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:41:08,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:41:08,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:41:08,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:41:08,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625986f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08, skipping insertion in model container [2024-10-13 12:41:08,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,173 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:41:08,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:41:08,459 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:41:08,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:41:08,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:41:08,508 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:41:08,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:41:08,581 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:41:08,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08 WrapperNode [2024-10-13 12:41:08,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:41:08,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:41:08,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:41:08,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:41:08,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,642 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 307 [2024-10-13 12:41:08,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:41:08,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:41:08,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:41:08,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:41:08,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,686 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-13 12:41:08,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:41:08,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:41:08,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:41:08,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:41:08,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (1/1) ... [2024-10-13 12:41:08,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:41:08,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:41:08,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:41:08,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:41:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:41:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:41:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:41:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:41:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:41:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:41:08,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:41:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:41:08,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:41:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:41:08,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:41:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:41:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:41:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:41:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:41:08,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:41:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:41:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:41:08,805 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:41:08,952 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:41:08,955 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:41:09,605 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:41:09,606 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:41:10,021 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:41:10,021 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 12:41:10,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:41:10 BoogieIcfgContainer [2024-10-13 12:41:10,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:41:10,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:41:10,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:41:10,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:41:10,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:41:08" (1/3) ... [2024-10-13 12:41:10,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acecf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:41:10, skipping insertion in model container [2024-10-13 12:41:10,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:08" (2/3) ... [2024-10-13 12:41:10,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acecf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:41:10, skipping insertion in model container [2024-10-13 12:41:10,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:41:10" (3/3) ... [2024-10-13 12:41:10,038 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-10-13 12:41:10,055 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:41:10,055 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-13 12:41:10,056 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:41:10,150 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:41:10,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 79 transitions, 179 flow [2024-10-13 12:41:10,227 INFO L124 PetriNetUnfolderBase]: 10/76 cut-off events. [2024-10-13 12:41:10,228 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:41:10,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 10/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 216 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2024-10-13 12:41:10,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 79 transitions, 179 flow [2024-10-13 12:41:10,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 75 transitions, 168 flow [2024-10-13 12:41:10,250 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:41:10,259 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;@1a1eb4f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:41:10,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-10-13 12:41:10,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:41:10,264 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:41:10,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:41:10,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:10,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:41:10,266 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-10-13 12:41:10,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash 927542, now seen corresponding path program 1 times [2024-10-13 12:41:10,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:10,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812608404] [2024-10-13 12:41:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:10,281 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 [2024-10-13 12:41:10,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:10,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:10,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-13 12:41:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:10,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:41:10,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:10,449 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 [2024-10-13 12:41:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:10,463 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:10,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:10,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812608404] [2024-10-13 12:41:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812608404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:10,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:10,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:41:10,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12656402] [2024-10-13 12:41:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:10,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:41:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:10,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:41:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:41:10,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-10-13 12:41:10,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-13 12:41:10,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:10,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-10-13 12:41:10,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:12,044 INFO L124 PetriNetUnfolderBase]: 5875/9205 cut-off events. [2024-10-13 12:41:12,045 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-10-13 12:41:12,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17449 conditions, 9205 events. 5875/9205 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63309 event pairs, 5236 based on Foata normal form. 514/5967 useless extension candidates. Maximal degree in co-relation 16837. Up to 7878 conditions per place. [2024-10-13 12:41:12,128 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 47 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-13 12:41:12,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 252 flow [2024-10-13 12:41:12,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:41:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:41:12,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-10-13 12:41:12,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232067510548524 [2024-10-13 12:41:12,141 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 168 flow. Second operand 3 states and 124 transitions. [2024-10-13 12:41:12,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 252 flow [2024-10-13 12:41:12,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:41:12,163 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 146 flow [2024-10-13 12:41:12,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-10-13 12:41:12,170 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2024-10-13 12:41:12,170 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 146 flow [2024-10-13 12:41:12,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-13 12:41:12,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:12,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:41:12,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-13 12:41:12,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:12,372 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-10-13 12:41:12,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:12,373 INFO L85 PathProgramCache]: Analyzing trace with hash 927543, now seen corresponding path program 1 times [2024-10-13 12:41:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:12,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913608997] [2024-10-13 12:41:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:12,374 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 [2024-10-13 12:41:12,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:12,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:12,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-13 12:41:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:12,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:41:12,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:12,460 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 [2024-10-13 12:41:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:12,546 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:12,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:12,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913608997] [2024-10-13 12:41:12,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913608997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:12,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:12,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:41:12,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415287281] [2024-10-13 12:41:12,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:12,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:41:12,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:12,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:41:12,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:41:12,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-10-13 12:41:12,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:41:12,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:12,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-10-13 12:41:12,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:13,974 INFO L124 PetriNetUnfolderBase]: 5876/9212 cut-off events. [2024-10-13 12:41:13,975 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-13 12:41:13,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17244 conditions, 9212 events. 5876/9212 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63549 event pairs, 5234 based on Foata normal form. 0/5456 useless extension candidates. Maximal degree in co-relation 17194. Up to 7889 conditions per place. [2024-10-13 12:41:14,047 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 51 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-10-13 12:41:14,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 288 flow [2024-10-13 12:41:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:41:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:41:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-10-13 12:41:14,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4936708860759494 [2024-10-13 12:41:14,053 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 146 flow. Second operand 4 states and 156 transitions. [2024-10-13 12:41:14,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 288 flow [2024-10-13 12:41:14,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:41:14,056 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 224 flow [2024-10-13 12:41:14,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2024-10-13 12:41:14,058 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2024-10-13 12:41:14,059 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 224 flow [2024-10-13 12:41:14,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:41:14,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:14,059 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:41:14,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-13 12:41:14,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:14,260 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-10-13 12:41:14,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash 891397831, now seen corresponding path program 1 times [2024-10-13 12:41:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:14,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126024409] [2024-10-13 12:41:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:14,263 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 [2024-10-13 12:41:14,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:14,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:14,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-13 12:41:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:14,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:41:14,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:14,352 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 [2024-10-13 12:41:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:14,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:41:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:14,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:14,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126024409] [2024-10-13 12:41:14,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126024409] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:41:14,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:41:14,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:41:14,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654420279] [2024-10-13 12:41:14,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:41:14,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:41:14,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:41:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:41:14,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-10-13 12:41:14,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 224 flow. Second operand has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:41:14,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:14,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-10-13 12:41:14,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:17,115 INFO L124 PetriNetUnfolderBase]: 5885/9239 cut-off events. [2024-10-13 12:41:17,115 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-10-13 12:41:17,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17362 conditions, 9239 events. 5885/9239 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63860 event pairs, 5234 based on Foata normal form. 0/5483 useless extension candidates. Maximal degree in co-relation 17208. Up to 7892 conditions per place. [2024-10-13 12:41:17,202 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 51 selfloop transitions, 37 changer transitions 0/104 dead transitions. [2024-10-13 12:41:17,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 520 flow [2024-10-13 12:41:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:41:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:41:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2024-10-13 12:41:17,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4139240506329114 [2024-10-13 12:41:17,207 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 224 flow. Second operand 10 states and 327 transitions. [2024-10-13 12:41:17,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 520 flow [2024-10-13 12:41:17,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 104 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:41:17,214 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 468 flow [2024-10-13 12:41:17,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=468, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2024-10-13 12:41:17,216 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-10-13 12:41:17,216 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 468 flow [2024-10-13 12:41:17,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:41:17,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:17,217 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:17,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-13 12:41:17,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:17,419 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-10-13 12:41:17,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1258672532, now seen corresponding path program 1 times [2024-10-13 12:41:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:17,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099846575] [2024-10-13 12:41:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:17,420 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 [2024-10-13 12:41:17,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:17,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:17,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-13 12:41:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:17,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:41:17,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:17,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:17,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:17,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099846575] [2024-10-13 12:41:17,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099846575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:17,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:17,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:41:17,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779920481] [2024-10-13 12:41:17,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:17,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:41:17,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:41:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:41:17,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-10-13 12:41:17,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-10-13 12:41:17,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:17,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-10-13 12:41:17,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:18,481 INFO L124 PetriNetUnfolderBase]: 6093/9629 cut-off events. [2024-10-13 12:41:18,482 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-10-13 12:41:18,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18250 conditions, 9629 events. 6093/9629 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 66675 event pairs, 5421 based on Foata normal form. 99/6024 useless extension candidates. Maximal degree in co-relation 18108. Up to 7918 conditions per place. [2024-10-13 12:41:18,550 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 128 selfloop transitions, 3 changer transitions 1/151 dead transitions. [2024-10-13 12:41:18,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 977 flow [2024-10-13 12:41:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:41:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:41:18,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-10-13 12:41:18,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886075949367089 [2024-10-13 12:41:18,557 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 468 flow. Second operand 4 states and 186 transitions. [2024-10-13 12:41:18,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 977 flow [2024-10-13 12:41:18,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 151 transitions, 821 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-13 12:41:18,565 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 394 flow [2024-10-13 12:41:18,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2024-10-13 12:41:18,569 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-10-13 12:41:18,569 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 394 flow [2024-10-13 12:41:18,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-10-13 12:41:18,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:18,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:18,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-13 12:41:18,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:18,771 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-10-13 12:41:18,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:18,771 INFO L85 PathProgramCache]: Analyzing trace with hash -150762492, now seen corresponding path program 1 times [2024-10-13 12:41:18,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:18,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081456229] [2024-10-13 12:41:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:18,772 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 [2024-10-13 12:41:18,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:18,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:18,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-13 12:41:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:18,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:41:18,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:18,901 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 [2024-10-13 12:41:18,949 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:41:18,949 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 [2024-10-13 12:41:18,979 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-13 12:41:18,979 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 [2024-10-13 12:41:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:41:19,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:19,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:19,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081456229] [2024-10-13 12:41:19,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081456229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:19,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:19,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:41:19,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470887041] [2024-10-13 12:41:19,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:19,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:41:19,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:41:19,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:41:19,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-10-13 12:41:19,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-10-13 12:41:19,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:19,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-10-13 12:41:19,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:20,008 INFO L124 PetriNetUnfolderBase]: 5379/8574 cut-off events. [2024-10-13 12:41:20,008 INFO L125 PetriNetUnfolderBase]: For 653/656 co-relation queries the response was YES. [2024-10-13 12:41:20,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17053 conditions, 8574 events. 5379/8574 cut-off events. For 653/656 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 56528 event pairs, 4657 based on Foata normal form. 0/5700 useless extension candidates. Maximal degree in co-relation 16931. Up to 7144 conditions per place. [2024-10-13 12:41:20,088 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 73 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2024-10-13 12:41:20,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 101 transitions, 552 flow [2024-10-13 12:41:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:41:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:41:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-10-13 12:41:20,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3949367088607595 [2024-10-13 12:41:20,091 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 394 flow. Second operand 5 states and 156 transitions. [2024-10-13 12:41:20,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 101 transitions, 552 flow [2024-10-13 12:41:20,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 548 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 12:41:20,095 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 402 flow [2024-10-13 12:41:20,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2024-10-13 12:41:20,096 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-10-13 12:41:20,097 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 402 flow [2024-10-13 12:41:20,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-10-13 12:41:20,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:20,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:20,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-13 12:41:20,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:20,299 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-10-13 12:41:20,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:20,300 INFO L85 PathProgramCache]: Analyzing trace with hash -150762491, now seen corresponding path program 1 times [2024-10-13 12:41:20,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190021768] [2024-10-13 12:41:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:20,301 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 [2024-10-13 12:41:20,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:20,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:20,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-13 12:41:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:20,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 12:41:20,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:20,439 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 [2024-10-13 12:41:20,462 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 [2024-10-13 12:41:20,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:41:20,658 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 [2024-10-13 12:41:20,683 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:41:20,684 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 [2024-10-13 12:41:20,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:41:20,744 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 [2024-10-13 12:41:20,760 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:41:20,761 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 [2024-10-13 12:41:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:20,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:41:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:22,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:22,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190021768] [2024-10-13 12:41:22,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190021768] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:41:22,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:41:22,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-13 12:41:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568424103] [2024-10-13 12:41:22,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:41:22,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:41:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:41:22,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:41:27,642 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] [2024-10-13 12:41:31,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:41:33,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:41:35,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 79 [2024-10-13 12:41:35,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 402 flow. Second operand has 12 states, 12 states have (on average 18.666666666666668) internal successors, (224), 12 states have internal predecessors, (224), 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) [2024-10-13 12:41:35,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:35,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 79 [2024-10-13 12:41:35,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:38,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:41:57,686 INFO L124 PetriNetUnfolderBase]: 13785/21918 cut-off events. [2024-10-13 12:41:57,686 INFO L125 PetriNetUnfolderBase]: For 1804/1804 co-relation queries the response was YES. [2024-10-13 12:41:57,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43009 conditions, 21918 events. 13785/21918 cut-off events. For 1804/1804 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 162304 event pairs, 11985 based on Foata normal form. 0/15034 useless extension candidates. Maximal degree in co-relation 41829. Up to 6967 conditions per place. [2024-10-13 12:41:57,830 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 149 selfloop transitions, 79 changer transitions 0/242 dead transitions. [2024-10-13 12:41:57,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 242 transitions, 1405 flow [2024-10-13 12:41:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:41:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:41:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 407 transitions. [2024-10-13 12:41:57,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3679927667269439 [2024-10-13 12:41:57,834 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 402 flow. Second operand 14 states and 407 transitions. [2024-10-13 12:41:57,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 242 transitions, 1405 flow [2024-10-13 12:41:57,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 242 transitions, 1378 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:41:57,842 INFO L231 Difference]: Finished difference. Result has 99 places, 151 transitions, 948 flow [2024-10-13 12:41:57,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=948, PETRI_PLACES=99, PETRI_TRANSITIONS=151} [2024-10-13 12:41:57,843 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2024-10-13 12:41:57,843 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 151 transitions, 948 flow [2024-10-13 12:41:57,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.666666666666668) internal successors, (224), 12 states have internal predecessors, (224), 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) [2024-10-13 12:41:57,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:57,844 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:57,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-13 12:41:58,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:58,045 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-10-13 12:41:58,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash -378669996, now seen corresponding path program 1 times [2024-10-13 12:41:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420199266] [2024-10-13 12:41:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:58,046 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 [2024-10-13 12:41:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:58,049 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:58,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-13 12:41:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:58,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 12:41:58,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:58,179 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 [2024-10-13 12:41:58,193 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 [2024-10-13 12:41:58,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:41:58,539 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 [2024-10-13 12:41:58,624 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:41:58,624 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 [2024-10-13 12:41:58,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:41:58,737 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 [2024-10-13 12:41:58,765 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:41:58,766 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 [2024-10-13 12:41:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:59,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:05,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:05,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420199266] [2024-10-13 12:42:05,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420199266] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:05,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:42:05,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:42:05,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491997154] [2024-10-13 12:42:05,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:05,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:42:05,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:05,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:42:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=141, Unknown=1, NotChecked=0, Total=182 [2024-10-13 12:42:10,142 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] [2024-10-13 12:42:10,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 79 [2024-10-13 12:42:10,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 151 transitions, 948 flow. Second operand has 14 states, 14 states have (on average 17.428571428571427) internal successors, (244), 14 states have internal predecessors, (244), 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) [2024-10-13 12:42:10,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:10,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 79 [2024-10-13 12:42:10,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:31,493 INFO L124 PetriNetUnfolderBase]: 15787/25560 cut-off events. [2024-10-13 12:42:31,494 INFO L125 PetriNetUnfolderBase]: For 5715/5717 co-relation queries the response was YES. [2024-10-13 12:42:31,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52294 conditions, 25560 events. 15787/25560 cut-off events. For 5715/5717 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 198827 event pairs, 7069 based on Foata normal form. 302/18785 useless extension candidates. Maximal degree in co-relation 52101. Up to 4923 conditions per place. [2024-10-13 12:42:31,622 INFO L140 encePairwiseOnDemand]: 62/79 looper letters, 208 selfloop transitions, 88 changer transitions 0/309 dead transitions. [2024-10-13 12:42:31,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 309 transitions, 2006 flow [2024-10-13 12:42:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 12:42:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 12:42:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 510 transitions. [2024-10-13 12:42:31,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.379746835443038 [2024-10-13 12:42:31,626 INFO L175 Difference]: Start difference. First operand has 99 places, 151 transitions, 948 flow. Second operand 17 states and 510 transitions. [2024-10-13 12:42:31,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 309 transitions, 2006 flow [2024-10-13 12:42:31,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 309 transitions, 2001 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 12:42:31,650 INFO L231 Difference]: Finished difference. Result has 120 places, 159 transitions, 1252 flow [2024-10-13 12:42:31,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1252, PETRI_PLACES=120, PETRI_TRANSITIONS=159} [2024-10-13 12:42:31,651 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 45 predicate places. [2024-10-13 12:42:31,651 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 159 transitions, 1252 flow [2024-10-13 12:42:31,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.428571428571427) internal successors, (244), 14 states have internal predecessors, (244), 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) [2024-10-13 12:42:31,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:31,652 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-13 12:42:31,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-13 12:42:31,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:31,853 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-10-13 12:42:31,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:31,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1070183049, now seen corresponding path program 2 times [2024-10-13 12:42:31,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:31,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233988866] [2024-10-13 12:42:31,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:42:31,853 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 [2024-10-13 12:42:31,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:31,856 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:31,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-13 12:42:31,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:31,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:31,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:42:31,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:31,933 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 [2024-10-13 12:42:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:32,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:33,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233988866] [2024-10-13 12:42:33,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233988866] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:33,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:42:33,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:42:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588715383] [2024-10-13 12:42:33,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:33,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:42:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:42:33,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182