./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.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 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:47:36,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:47:36,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:47:36,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:47:36,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:47:36,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:47:36,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:47:36,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:47:36,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:47:36,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:47:36,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:47:36,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:47:36,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:47:36,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:47:36,326 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:47:36,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:47:36,327 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:47:36,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:47:36,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:47:36,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:47:36,328 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:47:36,328 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:47:36,328 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:47:36,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:47:36,329 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:47:36,331 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:47:36,331 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:47:36,331 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:47:36,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:47:36,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:47:36,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:47:36,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:47:36,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:47:36,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:47:36,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:47:36,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:47:36,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:47:36,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:47:36,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:47:36,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:47:36,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:47:36,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:47:36,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2024-10-14 19:47:36,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:47:36,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:47:36,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:47:36,556 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:47:36,557 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:47:36,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-14 19:47:37,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:47:38,033 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:47:38,034 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-14 19:47:38,042 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14d7cb6c/1a05f5fddadd4fbd89e571f0ca6d60d8/FLAG4e94ac280 [2024-10-14 19:47:38,053 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14d7cb6c/1a05f5fddadd4fbd89e571f0ca6d60d8 [2024-10-14 19:47:38,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:47:38,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:47:38,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:38,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:47:38,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:47:38,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:38" (1/1) ... [2024-10-14 19:47:38,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562752e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:38, skipping insertion in model container [2024-10-14 19:47:38,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:38" (1/1) ... [2024-10-14 19:47:38,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:47:38,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:38,267 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) [2024-10-14 19:47:38,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@142d1a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:38, skipping insertion in model container [2024-10-14 19:47:38,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:38,268 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:47:38,269 INFO L158 Benchmark]: Toolchain (without parser) took 212.49ms. Allocated memory is still 180.4MB. Free memory was 109.4MB in the beginning and 98.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:47:38,270 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 180.4MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:47:38,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.84ms. Allocated memory is still 180.4MB. Free memory was 109.2MB in the beginning and 98.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:47:38,271 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 180.4MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.84ms. Allocated memory is still 180.4MB. Free memory was 109.2MB in the beginning and 98.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.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 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:47:39,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:47:39,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:47:39,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:47:39,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:47:39,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:47:39,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:47:39,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:47:39,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:47:39,973 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:47:39,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:47:39,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:47:39,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:47:39,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:47:39,974 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:47:39,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:47:39,976 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:47:39,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:47:39,976 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:47:39,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:47:39,979 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:47:39,979 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:47:39,979 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:47:39,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:47:39,980 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:47:39,980 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:47:39,980 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:47:39,980 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:47:39,980 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:47:39,980 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:47:39,980 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:47:39,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:47:39,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:47:39,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:47:39,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:47:39,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:47:39,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:47:39,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:47:39,981 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:47:39,981 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:47:39,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:47:39,983 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:47:39,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:47:39,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:47:39,984 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:47:39,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2024-10-14 19:47:40,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:47:40,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:47:40,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:47:40,275 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:47:40,276 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:47:40,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-14 19:47:41,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:47:41,804 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:47:41,804 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-14 19:47:41,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8acd8513/2c972c34792946cb8ff0681b266459a7/FLAGf15c5b9ef [2024-10-14 19:47:41,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8acd8513/2c972c34792946cb8ff0681b266459a7 [2024-10-14 19:47:41,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:47:41,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:47:41,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:41,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:47:41,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:47:41,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:41" (1/1) ... [2024-10-14 19:47:41,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160b33eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:41, skipping insertion in model container [2024-10-14 19:47:41,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:41" (1/1) ... [2024-10-14 19:47:41,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:47:42,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:42,038 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:47:42,044 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:47:42,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:42,077 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:47:42,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:42,133 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:47:42,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42 WrapperNode [2024-10-14 19:47:42,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:42,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:47:42,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:47:42,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:47:42,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,210 INFO L138 Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 267 [2024-10-14 19:47:42,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:47:42,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:47:42,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:47:42,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:47:42,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,251 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-14 19:47:42,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:47:42,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:47:42,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:47:42,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:47:42,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (1/1) ... [2024-10-14 19:47:42,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:47:42,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:47:42,316 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) [2024-10-14 19:47:42,318 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 [2024-10-14 19:47:42,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:47:42,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:47:42,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:47:42,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:47:42,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:47:42,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:47:42,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:47:42,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:47:42,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:47:42,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:47:42,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:47:42,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:47:42,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:47:42,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:47:42,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:47:42,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:47:42,355 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:47:42,442 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:47:42,444 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:47:42,995 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:47:42,995 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:47:43,289 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:47:43,290 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-14 19:47:43,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:47:43 BoogieIcfgContainer [2024-10-14 19:47:43,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:47:43,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:47:43,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:47:43,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:47:43,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:47:41" (1/3) ... [2024-10-14 19:47:43,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcc941e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:47:43, skipping insertion in model container [2024-10-14 19:47:43,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:42" (2/3) ... [2024-10-14 19:47:43,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcc941e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:47:43, skipping insertion in model container [2024-10-14 19:47:43,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:47:43" (3/3) ... [2024-10-14 19:47:43,298 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2024-10-14 19:47:43,315 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:47:43,315 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-14 19:47:43,315 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:47:43,379 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 19:47:43,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 195 flow [2024-10-14 19:47:43,444 INFO L124 PetriNetUnfolderBase]: 9/84 cut-off events. [2024-10-14 19:47:43,444 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:47:43,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 9/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 277 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-10-14 19:47:43,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 87 transitions, 195 flow [2024-10-14 19:47:43,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 184 flow [2024-10-14 19:47:43,460 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:47:43,468 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;@19001c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:47:43,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-10-14 19:47:43,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:47:43,473 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:47:43,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:47:43,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:43,474 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:47:43,474 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:47:43,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash 864056, now seen corresponding path program 1 times [2024-10-14 19:47:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:43,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122752574] [2024-10-14 19:47:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:43,501 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 [2024-10-14 19:47:43,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:43,506 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) [2024-10-14 19:47:43,511 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 [2024-10-14 19:47:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:43,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:47:43,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:43,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:47:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:43,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:47:43,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:43,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122752574] [2024-10-14 19:47:43,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122752574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:43,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:43,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:47:43,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44323936] [2024-10-14 19:47:43,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:43,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:47:43,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:47:43,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:47:43,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-14 19:47:43,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:43,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:43,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-14 19:47:43,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:44,113 INFO L124 PetriNetUnfolderBase]: 977/1702 cut-off events. [2024-10-14 19:47:44,114 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-10-14 19:47:44,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 1702 events. 977/1702 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9468 event pairs, 608 based on Foata normal form. 1/1213 useless extension candidates. Maximal degree in co-relation 2866. Up to 1318 conditions per place. [2024-10-14 19:47:44,124 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 36 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-10-14 19:47:44,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 250 flow [2024-10-14 19:47:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:47:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:47:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-10-14 19:47:44,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 19:47:44,138 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 184 flow. Second operand 3 states and 174 transitions. [2024-10-14 19:47:44,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 250 flow [2024-10-14 19:47:44,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 238 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:47:44,144 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 166 flow [2024-10-14 19:47:44,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-10-14 19:47:44,147 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2024-10-14 19:47:44,147 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 166 flow [2024-10-14 19:47:44,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:44,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:44,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:47:44,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 19:47:44,349 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 [2024-10-14 19:47:44,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:47:44,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash 864057, now seen corresponding path program 1 times [2024-10-14 19:47:44,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:44,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230041486] [2024-10-14 19:47:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:44,351 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 [2024-10-14 19:47:44,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:44,357 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) [2024-10-14 19:47:44,357 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 [2024-10-14 19:47:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:44,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:47:44,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:44,448 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 [2024-10-14 19:47:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:44,577 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:47:44,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:44,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230041486] [2024-10-14 19:47:44,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230041486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:44,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:44,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:47:44,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422644568] [2024-10-14 19:47:44,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:44,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:47:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:47:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:47:44,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-14 19:47:44,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:44,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:44,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-14 19:47:44,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:45,192 INFO L124 PetriNetUnfolderBase]: 980/1711 cut-off events. [2024-10-14 19:47:45,192 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-14 19:47:45,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3086 conditions, 1711 events. 980/1711 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9494 event pairs, 608 based on Foata normal form. 0/1217 useless extension candidates. Maximal degree in co-relation 3036. Up to 1331 conditions per place. [2024-10-14 19:47:45,200 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 40 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-10-14 19:47:45,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 286 flow [2024-10-14 19:47:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:47:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:47:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2024-10-14 19:47:45,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6580459770114943 [2024-10-14 19:47:45,203 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 166 flow. Second operand 4 states and 229 transitions. [2024-10-14 19:47:45,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 286 flow [2024-10-14 19:47:45,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:47:45,205 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 244 flow [2024-10-14 19:47:45,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-10-14 19:47:45,206 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -5 predicate places. [2024-10-14 19:47:45,206 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 244 flow [2024-10-14 19:47:45,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:45,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:45,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:47:45,214 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 [2024-10-14 19:47:45,408 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 [2024-10-14 19:47:45,409 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:47:45,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash 830386764, now seen corresponding path program 1 times [2024-10-14 19:47:45,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:45,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844228930] [2024-10-14 19:47:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:45,411 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 [2024-10-14 19:47:45,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:45,413 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) [2024-10-14 19:47:45,415 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 [2024-10-14 19:47:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:45,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:47:45,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:45,465 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 [2024-10-14 19:47:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:45,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:47:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:45,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:45,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844228930] [2024-10-14 19:47:45,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844228930] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:47:45,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:47:45,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:47:45,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197320475] [2024-10-14 19:47:45,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:47:45,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:47:45,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:45,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:47:45,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:47:46,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-14 19:47:46,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 244 flow. Second operand has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:46,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:46,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-14 19:47:46,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:48,142 INFO L124 PetriNetUnfolderBase]: 989/1738 cut-off events. [2024-10-14 19:47:48,143 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-14 19:47:48,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3204 conditions, 1738 events. 989/1738 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9646 event pairs, 608 based on Foata normal form. 0/1244 useless extension candidates. Maximal degree in co-relation 3050. Up to 1334 conditions per place. [2024-10-14 19:47:48,152 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 40 selfloop transitions, 37 changer transitions 0/114 dead transitions. [2024-10-14 19:47:48,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 518 flow [2024-10-14 19:47:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:47:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:47:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 526 transitions. [2024-10-14 19:47:48,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045977011494252 [2024-10-14 19:47:48,155 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 244 flow. Second operand 10 states and 526 transitions. [2024-10-14 19:47:48,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 518 flow [2024-10-14 19:47:48,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 114 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:47:48,161 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 488 flow [2024-10-14 19:47:48,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=488, PETRI_PLACES=91, PETRI_TRANSITIONS=114} [2024-10-14 19:47:48,162 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2024-10-14 19:47:48,162 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 488 flow [2024-10-14 19:47:48,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:48,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:48,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:47:48,167 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 [2024-10-14 19:47:48,363 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 [2024-10-14 19:47:48,363 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:47:48,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash -867647297, now seen corresponding path program 1 times [2024-10-14 19:47:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:48,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225054877] [2024-10-14 19:47:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:48,366 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 [2024-10-14 19:47:48,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:48,367 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) [2024-10-14 19:47:48,369 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 [2024-10-14 19:47:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:48,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:47:48,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:48,467 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:47:48,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225054877] [2024-10-14 19:47:48,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225054877] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:48,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:48,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:47:48,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083677941] [2024-10-14 19:47:48,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:48,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:47:48,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:48,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:47:48,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:47:48,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-14 19:47:48,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 114 transitions, 488 flow. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 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) [2024-10-14 19:47:48,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:48,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-14 19:47:48,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:49,001 INFO L124 PetriNetUnfolderBase]: 1848/3316 cut-off events. [2024-10-14 19:47:49,001 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-10-14 19:47:49,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6180 conditions, 3316 events. 1848/3316 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21570 event pairs, 854 based on Foata normal form. 0/2384 useless extension candidates. Maximal degree in co-relation 6038. Up to 1591 conditions per place. [2024-10-14 19:47:49,017 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 143 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2024-10-14 19:47:49,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 186 transitions, 1082 flow [2024-10-14 19:47:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:49,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:49,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 321 transitions. [2024-10-14 19:47:49,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7379310344827587 [2024-10-14 19:47:49,019 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 488 flow. Second operand 5 states and 321 transitions. [2024-10-14 19:47:49,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 186 transitions, 1082 flow [2024-10-14 19:47:49,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 186 transitions, 926 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-14 19:47:49,025 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 410 flow [2024-10-14 19:47:49,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2024-10-14 19:47:49,025 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 9 predicate places. [2024-10-14 19:47:49,025 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 410 flow [2024-10-14 19:47:49,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 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) [2024-10-14 19:47:49,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:49,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:47:49,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-14 19:47:49,226 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 [2024-10-14 19:47:49,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:47:49,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2067975796, now seen corresponding path program 1 times [2024-10-14 19:47:49,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:49,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377090756] [2024-10-14 19:47:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:49,229 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 [2024-10-14 19:47:49,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:49,234 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) [2024-10-14 19:47:49,242 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 [2024-10-14 19:47:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:49,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:47:49,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:47:49,345 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:47:49,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:49,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377090756] [2024-10-14 19:47:49,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377090756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:49,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:49,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:47:49,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552834775] [2024-10-14 19:47:49,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:49,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:47:49,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:49,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:47:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:47:49,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-14 19:47:49,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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) [2024-10-14 19:47:49,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:49,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-14 19:47:49,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:50,025 INFO L124 PetriNetUnfolderBase]: 3218/5851 cut-off events. [2024-10-14 19:47:50,025 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2024-10-14 19:47:50,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11128 conditions, 5851 events. 3218/5851 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 42939 event pairs, 1458 based on Foata normal form. 62/4384 useless extension candidates. Maximal degree in co-relation 10961. Up to 2576 conditions per place. [2024-10-14 19:47:50,050 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 125 selfloop transitions, 9 changer transitions 0/173 dead transitions. [2024-10-14 19:47:50,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 850 flow [2024-10-14 19:47:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2024-10-14 19:47:50,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7310344827586207 [2024-10-14 19:47:50,051 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 410 flow. Second operand 5 states and 318 transitions. [2024-10-14 19:47:50,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 850 flow [2024-10-14 19:47:50,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 173 transitions, 846 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 19:47:50,055 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 445 flow [2024-10-14 19:47:50,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2024-10-14 19:47:50,056 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2024-10-14 19:47:50,056 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 445 flow [2024-10-14 19:47:50,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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) [2024-10-14 19:47:50,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:50,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:47:50,064 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 (6)] Ended with exit code 0 [2024-10-14 19:47:50,258 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 [2024-10-14 19:47:50,259 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:47:50,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash -654798358, now seen corresponding path program 1 times [2024-10-14 19:47:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:50,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611718034] [2024-10-14 19:47:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:50,259 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 [2024-10-14 19:47:50,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:50,267 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) [2024-10-14 19:47:50,268 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 [2024-10-14 19:47:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:50,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:47:50,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:50,361 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:47:50,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611718034] [2024-10-14 19:47:50,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611718034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:50,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:50,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:47:50,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466297483] [2024-10-14 19:47:50,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:50,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:47:50,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:50,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:47:50,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:47:50,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-14 19:47:50,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 445 flow. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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) [2024-10-14 19:47:50,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:50,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-14 19:47:50,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:50,928 INFO L124 PetriNetUnfolderBase]: 2892/5259 cut-off events. [2024-10-14 19:47:50,929 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2024-10-14 19:47:50,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 5259 events. 2892/5259 cut-off events. For 1567/1567 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 37159 event pairs, 1484 based on Foata normal form. 0/3862 useless extension candidates. Maximal degree in co-relation 10286. Up to 2755 conditions per place. [2024-10-14 19:47:50,953 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 139 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2024-10-14 19:47:50,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 182 transitions, 975 flow [2024-10-14 19:47:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2024-10-14 19:47:50,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7218390804597701 [2024-10-14 19:47:50,955 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 445 flow. Second operand 5 states and 314 transitions. [2024-10-14 19:47:50,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 182 transitions, 975 flow [2024-10-14 19:47:50,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 182 transitions, 964 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-14 19:47:50,958 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 454 flow [2024-10-14 19:47:50,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2024-10-14 19:47:50,959 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2024-10-14 19:47:50,959 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 454 flow [2024-10-14 19:47:50,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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) [2024-10-14 19:47:50,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:50,960 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:47:50,965 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 [2024-10-14 19:47:51,162 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 [2024-10-14 19:47:51,163 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:47:51,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1790519045, now seen corresponding path program 2 times [2024-10-14 19:47:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:51,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447769996] [2024-10-14 19:47:51,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:47:51,164 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 [2024-10-14 19:47:51,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:51,166 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) [2024-10-14 19:47:51,167 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 [2024-10-14 19:47:51,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:47:51,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:47:51,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:47:51,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:51,247 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 [2024-10-14 19:47:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:51,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:47:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:51,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:51,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447769996] [2024-10-14 19:47:51,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447769996] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:47:51,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:47:51,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:47:51,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728101655] [2024-10-14 19:47:51,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:47:51,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:47:51,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:51,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:47:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:47:54,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-14 19:47:54,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 454 flow. Second operand has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:54,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:54,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-14 19:47:54,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:58,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:48:02,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:48:08,280 INFO L124 PetriNetUnfolderBase]: 2633/5186 cut-off events. [2024-10-14 19:48:08,280 INFO L125 PetriNetUnfolderBase]: For 2120/2120 co-relation queries the response was YES. [2024-10-14 19:48:08,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10582 conditions, 5186 events. 2633/5186 cut-off events. For 2120/2120 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 39266 event pairs, 1847 based on Foata normal form. 42/3782 useless extension candidates. Maximal degree in co-relation 9959. Up to 3708 conditions per place. [2024-10-14 19:48:08,304 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 44 selfloop transitions, 91 changer transitions 0/172 dead transitions. [2024-10-14 19:48:08,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 172 transitions, 994 flow [2024-10-14 19:48:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:48:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:48:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1117 transitions. [2024-10-14 19:48:08,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5835945663531871 [2024-10-14 19:48:08,309 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 454 flow. Second operand 22 states and 1117 transitions. [2024-10-14 19:48:08,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 172 transitions, 994 flow [2024-10-14 19:48:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 172 transitions, 964 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:08,314 INFO L231 Difference]: Finished difference. Result has 127 places, 172 transitions, 962 flow [2024-10-14 19:48:08,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=962, PETRI_PLACES=127, PETRI_TRANSITIONS=172} [2024-10-14 19:48:08,315 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2024-10-14 19:48:08,315 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 172 transitions, 962 flow [2024-10-14 19:48:08,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:08,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:08,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:08,323 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 (8)] Forceful destruction successful, exit code 0 [2024-10-14 19:48:08,518 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 [2024-10-14 19:48:08,519 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:48:08,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1473152597, now seen corresponding path program 1 times [2024-10-14 19:48:08,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:08,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792045481] [2024-10-14 19:48:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:08,523 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 [2024-10-14 19:48:08,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:08,524 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) [2024-10-14 19:48:08,526 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 [2024-10-14 19:48:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:08,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:48:08,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:08,627 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 [2024-10-14 19:48:08,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:48:08,765 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-14 19:48:08,765 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 [2024-10-14 19:48:08,776 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 [2024-10-14 19:48:08,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:08,847 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 [2024-10-14 19:48:08,853 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:08,854 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 [2024-10-14 19:48:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:48:08,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:48:09,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792045481] [2024-10-14 19:48:09,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792045481] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:09,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:09,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:48:09,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976426896] [2024-10-14 19:48:09,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:09,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:48:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:09,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:48:09,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:48:14,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:20,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:28,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:32,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:37,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:38,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 87 [2024-10-14 19:48:38,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 172 transitions, 962 flow. Second operand has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 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) [2024-10-14 19:48:38,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:38,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 87 [2024-10-14 19:48:38,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:50,533 INFO L124 PetriNetUnfolderBase]: 47813/71875 cut-off events. [2024-10-14 19:48:50,533 INFO L125 PetriNetUnfolderBase]: For 12966/12966 co-relation queries the response was YES. [2024-10-14 19:48:50,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148553 conditions, 71875 events. 47813/71875 cut-off events. For 12966/12966 co-relation queries the response was YES. Maximal size of possible extension queue 3020. Compared 571435 event pairs, 20856 based on Foata normal form. 0/53011 useless extension candidates. Maximal degree in co-relation 148077. Up to 14741 conditions per place. [2024-10-14 19:48:51,218 INFO L140 encePairwiseOnDemand]: 68/87 looper letters, 335 selfloop transitions, 197 changer transitions 0/547 dead transitions. [2024-10-14 19:48:51,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 547 transitions, 3584 flow [2024-10-14 19:48:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 19:48:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 19:48:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 830 transitions. [2024-10-14 19:48:51,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4147926036981509 [2024-10-14 19:48:51,222 INFO L175 Difference]: Start difference. First operand has 127 places, 172 transitions, 962 flow. Second operand 23 states and 830 transitions. [2024-10-14 19:48:51,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 547 transitions, 3584 flow [2024-10-14 19:48:51,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 547 transitions, 3044 flow, removed 161 selfloop flow, removed 9 redundant places. [2024-10-14 19:48:51,249 INFO L231 Difference]: Finished difference. Result has 144 places, 286 transitions, 1804 flow [2024-10-14 19:48:51,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1804, PETRI_PLACES=144, PETRI_TRANSITIONS=286} [2024-10-14 19:48:51,250 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 60 predicate places. [2024-10-14 19:48:51,250 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 286 transitions, 1804 flow [2024-10-14 19:48:51,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 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) [2024-10-14 19:48:51,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:51,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:51,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 19:48:51,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:51,455 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:48:51,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:51,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1175716728, now seen corresponding path program 1 times [2024-10-14 19:48:51,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:51,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947423643] [2024-10-14 19:48:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:51,457 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 [2024-10-14 19:48:51,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:51,460 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:51,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:48:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:51,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:48:51,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:48:51,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:51,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947423643] [2024-10-14 19:48:51,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947423643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:51,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:51,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:48:51,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059483845] [2024-10-14 19:48:51,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:51,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:51,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:51,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:51,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-14 19:48:51,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 286 transitions, 1804 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-10-14 19:48:51,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:51,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-14 19:48:51,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:54,863 INFO L124 PetriNetUnfolderBase]: 14998/27995 cut-off events. [2024-10-14 19:48:54,863 INFO L125 PetriNetUnfolderBase]: For 16317/16691 co-relation queries the response was YES. [2024-10-14 19:48:55,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60300 conditions, 27995 events. 14998/27995 cut-off events. For 16317/16691 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 256534 event pairs, 7642 based on Foata normal form. 519/22596 useless extension candidates. Maximal degree in co-relation 59839. Up to 13139 conditions per place. [2024-10-14 19:48:55,193 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 267 selfloop transitions, 39 changer transitions 0/348 dead transitions. [2024-10-14 19:48:55,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 348 transitions, 2710 flow [2024-10-14 19:48:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2024-10-14 19:48:55,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7218390804597701 [2024-10-14 19:48:55,195 INFO L175 Difference]: Start difference. First operand has 144 places, 286 transitions, 1804 flow. Second operand 5 states and 314 transitions. [2024-10-14 19:48:55,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 348 transitions, 2710 flow [2024-10-14 19:48:55,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 348 transitions, 2621 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-14 19:48:55,279 INFO L231 Difference]: Finished difference. Result has 148 places, 288 transitions, 1832 flow [2024-10-14 19:48:55,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1832, PETRI_PLACES=148, PETRI_TRANSITIONS=288} [2024-10-14 19:48:55,285 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 64 predicate places. [2024-10-14 19:48:55,285 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 288 transitions, 1832 flow [2024-10-14 19:48:55,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-10-14 19:48:55,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:55,286 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:55,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-14 19:48:55,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:55,486 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:48:55,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2006005966, now seen corresponding path program 1 times [2024-10-14 19:48:55,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497945115] [2024-10-14 19:48:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:55,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:55,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:55,489 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:55,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:48:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:55,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:48:55,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:55,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:55,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:55,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497945115] [2024-10-14 19:48:55,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497945115] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:55,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:55,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:48:55,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123216798] [2024-10-14 19:48:55,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:55,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:55,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:55,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:55,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:55,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-14 19:48:55,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 288 transitions, 1832 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-10-14 19:48:55,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:55,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-14 19:48:55,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:58,215 INFO L124 PetriNetUnfolderBase]: 13824/27685 cut-off events. [2024-10-14 19:48:58,215 INFO L125 PetriNetUnfolderBase]: For 18254/18705 co-relation queries the response was YES. [2024-10-14 19:48:58,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59867 conditions, 27685 events. 13824/27685 cut-off events. For 18254/18705 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 270491 event pairs, 8938 based on Foata normal form. 24/21534 useless extension candidates. Maximal degree in co-relation 59404. Up to 15307 conditions per place. [2024-10-14 19:48:58,359 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 351 selfloop transitions, 16 changer transitions 0/409 dead transitions. [2024-10-14 19:48:58,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 409 transitions, 3293 flow [2024-10-14 19:48:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-10-14 19:48:58,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2024-10-14 19:48:58,361 INFO L175 Difference]: Start difference. First operand has 148 places, 288 transitions, 1832 flow. Second operand 5 states and 310 transitions. [2024-10-14 19:48:58,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 409 transitions, 3293 flow [2024-10-14 19:48:58,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 409 transitions, 3256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:48:58,423 INFO L231 Difference]: Finished difference. Result has 153 places, 289 transitions, 1839 flow [2024-10-14 19:48:58,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1839, PETRI_PLACES=153, PETRI_TRANSITIONS=289} [2024-10-14 19:48:58,424 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 69 predicate places. [2024-10-14 19:48:58,424 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 289 transitions, 1839 flow [2024-10-14 19:48:58,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-10-14 19:48:58,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:58,425 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:58,436 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 (11)] Forceful destruction successful, exit code 0 [2024-10-14 19:48:58,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2024-10-14 19:48:58,626 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:48:58,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:58,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1576908916, now seen corresponding path program 1 times [2024-10-14 19:48:58,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:58,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138874689] [2024-10-14 19:48:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:58,627 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 [2024-10-14 19:48:58,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:58,629 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2024-10-14 19:48:58,630 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 (12)] Waiting until timeout for monitored process [2024-10-14 19:48:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:58,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:48:58,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:58,728 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 [2024-10-14 19:48:58,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:48:58,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:58,829 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 [2024-10-14 19:48:58,836 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:58,837 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 [2024-10-14 19:48:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:48:58,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:48:59,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:59,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138874689] [2024-10-14 19:48:59,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138874689] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:59,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:59,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-14 19:48:59,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401051718] [2024-10-14 19:48:59,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:59,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:48:59,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:59,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:48:59,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:49:01,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 87 [2024-10-14 19:49:01,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 289 transitions, 1839 flow. Second operand has 12 states, 12 states have (on average 39.583333333333336) internal successors, (475), 12 states have internal predecessors, (475), 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) [2024-10-14 19:49:01,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:01,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 87 [2024-10-14 19:49:01,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:13,364 INFO L124 PetriNetUnfolderBase]: 42990/80925 cut-off events. [2024-10-14 19:49:13,365 INFO L125 PetriNetUnfolderBase]: For 46429/47735 co-relation queries the response was YES. [2024-10-14 19:49:13,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179224 conditions, 80925 events. 42990/80925 cut-off events. For 46429/47735 co-relation queries the response was YES. Maximal size of possible extension queue 3457. Compared 857602 event pairs, 15716 based on Foata normal form. 88/67899 useless extension candidates. Maximal degree in co-relation 178473. Up to 15604 conditions per place. [2024-10-14 19:49:14,206 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 244 selfloop transitions, 349 changer transitions 0/630 dead transitions. [2024-10-14 19:49:14,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 630 transitions, 4777 flow [2024-10-14 19:49:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 19:49:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 19:49:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1141 transitions. [2024-10-14 19:49:14,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5702148925537232 [2024-10-14 19:49:14,213 INFO L175 Difference]: Start difference. First operand has 153 places, 289 transitions, 1839 flow. Second operand 23 states and 1141 transitions. [2024-10-14 19:49:14,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 630 transitions, 4777 flow [2024-10-14 19:49:14,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 630 transitions, 4748 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:49:14,636 INFO L231 Difference]: Finished difference. Result has 174 places, 448 transitions, 3682 flow [2024-10-14 19:49:14,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3682, PETRI_PLACES=174, PETRI_TRANSITIONS=448} [2024-10-14 19:49:14,636 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 90 predicate places. [2024-10-14 19:49:14,636 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 448 transitions, 3682 flow [2024-10-14 19:49:14,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 39.583333333333336) internal successors, (475), 12 states have internal predecessors, (475), 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) [2024-10-14 19:49:14,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:14,637 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:14,641 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 (12)] Ended with exit code 0 [2024-10-14 19:49:14,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2024-10-14 19:49:14,841 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-14 19:49:14,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1576908917, now seen corresponding path program 1 times [2024-10-14 19:49:14,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:14,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149361174] [2024-10-14 19:49:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:14,842 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 [2024-10-14 19:49:14,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:14,844 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2024-10-14 19:49:14,845 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 (13)] Waiting until timeout for monitored process [2024-10-14 19:49:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:14,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:49:14,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:14,938 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 [2024-10-14 19:49:14,956 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-14 19:49:14,956 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 [2024-10-14 19:49:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:49:14,989 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:14,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:14,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149361174] [2024-10-14 19:49:14,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149361174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:14,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:14,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:49:14,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52795759] [2024-10-14 19:49:14,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:14,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:49:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:49:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:49:15,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 87 [2024-10-14 19:49:15,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 448 transitions, 3682 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-10-14 19:49:15,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:15,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 87 [2024-10-14 19:49:15,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand