./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:50:32,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:50:32,343 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:50:32,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:50:32,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:50:32,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:50:32,367 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:50:32,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:50:32,368 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:50:32,368 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:50:32,369 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:50:32,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:50:32,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:50:32,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:50:32,370 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:50:32,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:50:32,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:50:32,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:50:32,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:50:32,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:50:32,371 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:50:32,372 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:50:32,372 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:50:32,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:50:32,372 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:50:32,373 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:50:32,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:50:32,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:50:32,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:50:32,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:50:32,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:50:32,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:50:32,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:50:32,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:50:32,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:50:32,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:50:32,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:50:32,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:50:32,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:50:32,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:50:32,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:50:32,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:50:32,376 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2024-10-11 19:50:32,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:50:32,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:50:32,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:50:32,619 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:50:32,619 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:50:32,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-11 19:50:33,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:50:34,013 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:50:34,014 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-11 19:50:34,021 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ee58e566a/ec191258c1234ef1b9c20ec1866cce61/FLAG52fb6b634 [2024-10-11 19:50:34,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ee58e566a/ec191258c1234ef1b9c20ec1866cce61 [2024-10-11 19:50:34,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:50:34,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:50:34,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:50:34,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:50:34,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:50:34,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:50:34" (1/1) ... [2024-10-11 19:50:34,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1fa554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:34, skipping insertion in model container [2024-10-11 19:50:34,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:50:34" (1/1) ... [2024-10-11 19:50:34,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:50:34,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:50:34,684 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:50:34,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45be8341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:34, skipping insertion in model container [2024-10-11 19:50:34,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:50:34,685 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:50:34,686 INFO L158 Benchmark]: Toolchain (without parser) took 257.89ms. Allocated memory is still 159.4MB. Free memory was 90.6MB in the beginning and 122.9MB in the end (delta: -32.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2024-10-11 19:50:34,687 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:50:34,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.08ms. Allocated memory is still 159.4MB. Free memory was 90.4MB in the beginning and 122.9MB in the end (delta: -32.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2024-10-11 19:50:34,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.08ms. Allocated memory is still 159.4MB. Free memory was 90.4MB in the beginning and 122.9MB in the end (delta: -32.5MB). Peak memory consumption was 7.8MB. 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-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:50:36,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:50:36,376 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:50:36,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:50:36,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:50:36,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:50:36,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:50:36,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:50:36,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:50:36,410 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:50:36,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:50:36,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:50:36,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:50:36,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:50:36,412 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:50:36,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:50:36,413 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:50:36,414 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:50:36,414 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:50:36,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:50:36,414 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:50:36,416 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:50:36,416 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:50:36,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:50:36,417 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:50:36,417 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:50:36,417 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:50:36,417 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:50:36,417 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:50:36,418 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:50:36,418 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:50:36,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:50:36,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:50:36,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:50:36,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:50:36,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:50:36,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:50:36,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:50:36,421 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:50:36,421 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:50:36,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:50:36,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:50:36,422 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:50:36,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:50:36,423 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:50:36,423 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2024-10-11 19:50:36,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:50:36,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:50:36,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:50:36,741 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:50:36,741 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:50:36,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-11 19:50:37,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:50:38,139 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:50:38,140 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-11 19:50:38,151 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/90c5399b7/b59287a4d1744eb68b4a26065a5c9e5c/FLAG82c0fe8e8 [2024-10-11 19:50:38,167 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/90c5399b7/b59287a4d1744eb68b4a26065a5c9e5c [2024-10-11 19:50:38,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:50:38,171 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:50:38,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:50:38,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:50:38,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:50:38,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5917b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38, skipping insertion in model container [2024-10-11 19:50:38,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:50:38,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:50:38,412 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:50:38,416 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:50:38,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:50:38,448 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:50:38,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:50:38,498 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:50:38,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38 WrapperNode [2024-10-11 19:50:38,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:50:38,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:50:38,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:50:38,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:50:38,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,544 INFO L138 Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 267 [2024-10-11 19:50:38,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:50:38,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:50:38,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:50:38,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:50:38,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,559 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,575 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]. [2024-10-11 19:50:38,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,606 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:50:38,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:50:38,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:50:38,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:50:38,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (1/1) ... [2024-10-11 19:50:38,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:50:38,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:50:38,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:50:38,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:50:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:50:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:50:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:50:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:50:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:50:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:50:38,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:50:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:50:38,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:50:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:50:38,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:50:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:50:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:50:38,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:50:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:50:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:50:38,682 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:50:38,804 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:50:38,806 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:50:39,427 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:50:39,427 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:50:39,731 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:50:39,733 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 19:50:39,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:50:39 BoogieIcfgContainer [2024-10-11 19:50:39,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:50:39,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:50:39,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:50:39,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:50:39,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:50:38" (1/3) ... [2024-10-11 19:50:39,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66332e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:50:39, skipping insertion in model container [2024-10-11 19:50:39,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:38" (2/3) ... [2024-10-11 19:50:39,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66332e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:50:39, skipping insertion in model container [2024-10-11 19:50:39,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:50:39" (3/3) ... [2024-10-11 19:50:39,743 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2024-10-11 19:50:39,758 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:50:39,758 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-11 19:50:39,758 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:50:39,864 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:50:39,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 195 flow [2024-10-11 19:50:39,932 INFO L124 PetriNetUnfolderBase]: 9/84 cut-off events. [2024-10-11 19:50:39,933 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:50:39,938 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. [2024-10-11 19:50:39,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 87 transitions, 195 flow [2024-10-11 19:50:39,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 184 flow [2024-10-11 19:50:39,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:50:39,959 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;@52200894, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:50:39,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-10-11 19:50:39,962 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:50:39,963 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:50:39,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:50:39,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:39,964 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:50:39,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:50:39,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:39,970 INFO L85 PathProgramCache]: Analyzing trace with hash 864056, now seen corresponding path program 1 times [2024-10-11 19:50:39,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:39,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996191187] [2024-10-11 19:50:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:39,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:39,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:39,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:39,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:50:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:40,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:50:40,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:40,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:50:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:40,147 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:40,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:40,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996191187] [2024-10-11 19:50:40,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996191187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:40,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:40,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:50:40,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882276586] [2024-10-11 19:50:40,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:40,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:50:40,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:40,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:50:40,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:50:40,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-11 19:50:40,258 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) [2024-10-11 19:50:40,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:40,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-11 19:50:40,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:40,588 INFO L124 PetriNetUnfolderBase]: 977/1702 cut-off events. [2024-10-11 19:50:40,589 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-10-11 19:50:40,593 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. [2024-10-11 19:50:40,602 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 36 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-10-11 19:50:40,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 250 flow [2024-10-11 19:50:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:50:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:50:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-10-11 19:50:40,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-11 19:50:40,616 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 184 flow. Second operand 3 states and 174 transitions. [2024-10-11 19:50:40,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 250 flow [2024-10-11 19:50:40,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 238 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:50:40,625 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 166 flow [2024-10-11 19:50:40,627 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} [2024-10-11 19:50:40,630 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2024-10-11 19:50:40,631 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 166 flow [2024-10-11 19:50:40,631 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) [2024-10-11 19:50:40,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:40,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:50:40,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 19:50:40,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:40,832 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:50:40,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:40,833 INFO L85 PathProgramCache]: Analyzing trace with hash 864057, now seen corresponding path program 1 times [2024-10-11 19:50:40,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:40,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872949477] [2024-10-11 19:50:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:40,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:40,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:40,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:40,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:50:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:40,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:50:40,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:40,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:50:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:41,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:41,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:41,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872949477] [2024-10-11 19:50:41,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872949477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:41,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:41,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:50:41,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601733345] [2024-10-11 19:50:41,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:41,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:41,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:41,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:41,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:41,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-11 19:50:41,353 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) [2024-10-11 19:50:41,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:41,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-11 19:50:41,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:41,728 INFO L124 PetriNetUnfolderBase]: 980/1711 cut-off events. [2024-10-11 19:50:41,728 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 19:50:41,731 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. [2024-10-11 19:50:41,738 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 40 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-10-11 19:50:41,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 286 flow [2024-10-11 19:50:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:50:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:50:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2024-10-11 19:50:41,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6580459770114943 [2024-10-11 19:50:41,740 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 166 flow. Second operand 4 states and 229 transitions. [2024-10-11 19:50:41,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 286 flow [2024-10-11 19:50:41,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:50:41,743 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 244 flow [2024-10-11 19:50:41,743 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} [2024-10-11 19:50:41,743 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -5 predicate places. [2024-10-11 19:50:41,744 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 244 flow [2024-10-11 19:50:41,744 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) [2024-10-11 19:50:41,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:41,744 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:50:41,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 19:50:41,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:41,947 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:50:41,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:41,948 INFO L85 PathProgramCache]: Analyzing trace with hash 830386764, now seen corresponding path program 1 times [2024-10-11 19:50:41,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:41,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825022435] [2024-10-11 19:50:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:41,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:41,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:41,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:41,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:50:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:41,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:50:41,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:42,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:50:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:42,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:50:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:42,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:42,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825022435] [2024-10-11 19:50:42,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825022435] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:50:42,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:50:42,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:50:42,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568251013] [2024-10-11 19:50:42,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:50:42,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:50:42,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:42,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:50:42,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:50:43,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-11 19:50:43,219 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) [2024-10-11 19:50:43,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:43,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-11 19:50:43,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:44,495 INFO L124 PetriNetUnfolderBase]: 989/1738 cut-off events. [2024-10-11 19:50:44,495 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-11 19:50:44,499 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. [2024-10-11 19:50:44,508 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 40 selfloop transitions, 37 changer transitions 0/114 dead transitions. [2024-10-11 19:50:44,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 518 flow [2024-10-11 19:50:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:50:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:50:44,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 526 transitions. [2024-10-11 19:50:44,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045977011494252 [2024-10-11 19:50:44,512 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 244 flow. Second operand 10 states and 526 transitions. [2024-10-11 19:50:44,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 518 flow [2024-10-11 19:50:44,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 114 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:50:44,519 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 488 flow [2024-10-11 19:50:44,519 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} [2024-10-11 19:50:44,520 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2024-10-11 19:50:44,520 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 488 flow [2024-10-11 19:50:44,520 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) [2024-10-11 19:50:44,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:44,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:44,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:50:44,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:44,723 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:50:44,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash -867647297, now seen corresponding path program 1 times [2024-10-11 19:50:44,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:44,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119609614] [2024-10-11 19:50:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:44,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:44,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:44,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:44,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:50:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:44,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:50:44,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:44,840 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:44,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:44,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119609614] [2024-10-11 19:50:44,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119609614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:44,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:44,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:50:44,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024961503] [2024-10-11 19:50:44,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:44,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:50:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:50:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:50:44,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-11 19:50:44,901 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) [2024-10-11 19:50:44,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:44,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-11 19:50:44,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:45,354 INFO L124 PetriNetUnfolderBase]: 1848/3316 cut-off events. [2024-10-11 19:50:45,355 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-10-11 19:50:45,359 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. [2024-10-11 19:50:45,371 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 143 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2024-10-11 19:50:45,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 186 transitions, 1082 flow [2024-10-11 19:50:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 321 transitions. [2024-10-11 19:50:45,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7379310344827587 [2024-10-11 19:50:45,373 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 488 flow. Second operand 5 states and 321 transitions. [2024-10-11 19:50:45,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 186 transitions, 1082 flow [2024-10-11 19:50:45,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 186 transitions, 926 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-11 19:50:45,378 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 410 flow [2024-10-11 19:50:45,378 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} [2024-10-11 19:50:45,379 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 9 predicate places. [2024-10-11 19:50:45,379 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 410 flow [2024-10-11 19:50:45,379 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) [2024-10-11 19:50:45,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:45,380 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:45,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:50:45,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:45,580 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:50:45,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2067975796, now seen corresponding path program 1 times [2024-10-11 19:50:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:45,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290939928] [2024-10-11 19:50:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:45,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:45,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:45,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:45,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:50:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:45,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:50:45,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:50:45,696 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:45,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:45,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290939928] [2024-10-11 19:50:45,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290939928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:45,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:45,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:50:45,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832975007] [2024-10-11 19:50:45,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:45,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:50:45,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:45,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:50:45,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:50:45,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-11 19:50:45,763 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) [2024-10-11 19:50:45,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:45,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-11 19:50:45,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:46,376 INFO L124 PetriNetUnfolderBase]: 3218/5851 cut-off events. [2024-10-11 19:50:46,376 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2024-10-11 19:50:46,383 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. [2024-10-11 19:50:46,400 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 125 selfloop transitions, 9 changer transitions 0/173 dead transitions. [2024-10-11 19:50:46,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 850 flow [2024-10-11 19:50:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2024-10-11 19:50:46,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7310344827586207 [2024-10-11 19:50:46,402 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 410 flow. Second operand 5 states and 318 transitions. [2024-10-11 19:50:46,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 850 flow [2024-10-11 19:50:46,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 173 transitions, 846 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:50:46,406 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 445 flow [2024-10-11 19:50:46,406 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} [2024-10-11 19:50:46,407 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2024-10-11 19:50:46,407 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 445 flow [2024-10-11 19:50:46,407 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) [2024-10-11 19:50:46,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:46,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:46,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:50:46,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:46,609 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:50:46,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash -654798358, now seen corresponding path program 1 times [2024-10-11 19:50:46,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:46,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064829430] [2024-10-11 19:50:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:46,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:46,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:46,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:46,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:50:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:46,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:50:46,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:46,729 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:50:46,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:46,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064829430] [2024-10-11 19:50:46,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064829430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:46,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:46,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:50:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987351086] [2024-10-11 19:50:46,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:46,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:50:46,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:46,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:50:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:50:46,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-11 19:50:46,788 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) [2024-10-11 19:50:46,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:46,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-11 19:50:46,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:47,316 INFO L124 PetriNetUnfolderBase]: 2892/5259 cut-off events. [2024-10-11 19:50:47,316 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2024-10-11 19:50:47,324 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. [2024-10-11 19:50:47,337 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 139 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2024-10-11 19:50:47,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 182 transitions, 975 flow [2024-10-11 19:50:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2024-10-11 19:50:47,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7218390804597701 [2024-10-11 19:50:47,339 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 445 flow. Second operand 5 states and 314 transitions. [2024-10-11 19:50:47,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 182 transitions, 975 flow [2024-10-11 19:50:47,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 182 transitions, 964 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 19:50:47,343 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 454 flow [2024-10-11 19:50:47,343 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} [2024-10-11 19:50:47,344 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2024-10-11 19:50:47,344 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 454 flow [2024-10-11 19:50:47,344 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) [2024-10-11 19:50:47,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:47,344 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:50:47,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 19:50:47,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:47,550 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:50:47,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:47,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1790519045, now seen corresponding path program 2 times [2024-10-11 19:50:47,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:50:47,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699299550] [2024-10-11 19:50:47,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:50:47,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:50:47,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:50:47,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:50:47,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:50:47,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:50:47,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:50:47,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 19:50:47,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:47,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:50:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:47,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:50:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:48,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:50:48,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699299550] [2024-10-11 19:50:48,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699299550] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:50:48,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:50:48,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:50:48,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265257710] [2024-10-11 19:50:48,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:50:48,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:50:48,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:50:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:50:48,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:50:51,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-11 19:50:51,191 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) [2024-10-11 19:50:51,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:51,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-11 19:50:51,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:55,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:50:59,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:51:05,369 INFO L124 PetriNetUnfolderBase]: 2633/5186 cut-off events. [2024-10-11 19:51:05,369 INFO L125 PetriNetUnfolderBase]: For 2120/2120 co-relation queries the response was YES. [2024-10-11 19:51:05,380 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. [2024-10-11 19:51:05,399 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 44 selfloop transitions, 91 changer transitions 0/172 dead transitions. [2024-10-11 19:51:05,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 172 transitions, 994 flow [2024-10-11 19:51:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:51:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:51:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1117 transitions. [2024-10-11 19:51:05,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5835945663531871 [2024-10-11 19:51:05,405 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 454 flow. Second operand 22 states and 1117 transitions. [2024-10-11 19:51:05,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 172 transitions, 994 flow [2024-10-11 19:51:05,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 172 transitions, 964 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:51:05,412 INFO L231 Difference]: Finished difference. Result has 127 places, 172 transitions, 962 flow [2024-10-11 19:51:05,412 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} [2024-10-11 19:51:05,412 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2024-10-11 19:51:05,412 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 172 transitions, 962 flow [2024-10-11 19:51:05,413 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) [2024-10-11 19:51:05,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:51:05,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:51:05,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 19:51:05,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:05,614 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:51:05,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:51:05,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1473152597, now seen corresponding path program 1 times [2024-10-11 19:51:05,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:51:05,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613546150] [2024-10-11 19:51:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:51:05,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:05,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:51:05,617 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:51:05,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:51:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:51:05,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:51:05,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:51:05,728 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 6 treesize of output 7 [2024-10-11 19:51:05,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:51:05,881 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:51:05,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:51:05,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:51:05,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:51:05,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:51:05,981 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:51:05,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:51:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:51:06,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:51:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:51:07,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:51:07,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613546150] [2024-10-11 19:51:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613546150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:51:07,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:51:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:51:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654415799] [2024-10-11 19:51:07,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:51:07,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:51:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:51:07,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:51:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:51:12,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:51:17,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:51:21,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:51:28,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 19:51:33,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:51:37,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:51:39,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 87 [2024-10-11 19:51:39,645 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) [2024-10-11 19:51:39,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:51:39,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 87 [2024-10-11 19:51:39,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:51:53,346 INFO L124 PetriNetUnfolderBase]: 47392/71067 cut-off events. [2024-10-11 19:51:53,346 INFO L125 PetriNetUnfolderBase]: For 12572/12572 co-relation queries the response was YES. [2024-10-11 19:51:53,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146928 conditions, 71067 events. 47392/71067 cut-off events. For 12572/12572 co-relation queries the response was YES. Maximal size of possible extension queue 3088. Compared 564770 event pairs, 20504 based on Foata normal form. 0/52759 useless extension candidates. Maximal degree in co-relation 146452. Up to 14355 conditions per place. [2024-10-11 19:51:54,034 INFO L140 encePairwiseOnDemand]: 68/87 looper letters, 335 selfloop transitions, 197 changer transitions 0/547 dead transitions. [2024-10-11 19:51:54,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 547 transitions, 3584 flow [2024-10-11 19:51:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 19:51:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 19:51:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 830 transitions. [2024-10-11 19:51:54,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4147926036981509 [2024-10-11 19:51:54,039 INFO L175 Difference]: Start difference. First operand has 127 places, 172 transitions, 962 flow. Second operand 23 states and 830 transitions. [2024-10-11 19:51:54,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 547 transitions, 3584 flow [2024-10-11 19:51:54,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 547 transitions, 3044 flow, removed 161 selfloop flow, removed 9 redundant places. [2024-10-11 19:51:54,063 INFO L231 Difference]: Finished difference. Result has 144 places, 286 transitions, 1804 flow [2024-10-11 19:51:54,063 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} [2024-10-11 19:51:54,064 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 60 predicate places. [2024-10-11 19:51:54,064 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 286 transitions, 1804 flow [2024-10-11 19:51:54,066 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) [2024-10-11 19:51:54,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:51:54,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:51:54,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:51:54,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:54,267 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:51:54,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:51:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1175716728, now seen corresponding path program 1 times [2024-10-11 19:51:54,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:51:54,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919377914] [2024-10-11 19:51:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:51:54,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:54,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:51:54,273 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:51:54,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:51:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:51:54,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:51:54,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:51:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:51:54,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:51:54,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:51:54,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919377914] [2024-10-11 19:51:54,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919377914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:51:54,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:51:54,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:51:54,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029984294] [2024-10-11 19:51:54,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:51:54,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:51:54,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:51:54,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:51:54,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:51:54,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-11 19:51:54,640 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) [2024-10-11 19:51:54,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:51:54,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-11 19:51:54,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:51:57,156 INFO L124 PetriNetUnfolderBase]: 14998/27995 cut-off events. [2024-10-11 19:51:57,156 INFO L125 PetriNetUnfolderBase]: For 16317/16691 co-relation queries the response was YES. [2024-10-11 19:51:57,444 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 256502 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. [2024-10-11 19:51:57,546 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 267 selfloop transitions, 39 changer transitions 0/348 dead transitions. [2024-10-11 19:51:57,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 348 transitions, 2710 flow [2024-10-11 19:51:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:51:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:51:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2024-10-11 19:51:57,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7218390804597701 [2024-10-11 19:51:57,547 INFO L175 Difference]: Start difference. First operand has 144 places, 286 transitions, 1804 flow. Second operand 5 states and 314 transitions. [2024-10-11 19:51:57,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 348 transitions, 2710 flow [2024-10-11 19:51:57,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 348 transitions, 2621 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-11 19:51:57,591 INFO L231 Difference]: Finished difference. Result has 148 places, 288 transitions, 1832 flow [2024-10-11 19:51:57,592 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} [2024-10-11 19:51:57,592 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 64 predicate places. [2024-10-11 19:51:57,592 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 288 transitions, 1832 flow [2024-10-11 19:51:57,593 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) [2024-10-11 19:51:57,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:51:57,593 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:51:57,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 19:51:57,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:57,799 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:51:57,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:51:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2006005966, now seen corresponding path program 1 times [2024-10-11 19:51:57,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:51:57,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355842238] [2024-10-11 19:51:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:51:57,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:51:57,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:51:57,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:51:57,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:51:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:51:57,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:51:57,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:51:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:51:57,927 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:51:57,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:51:57,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355842238] [2024-10-11 19:51:57,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355842238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:51:57,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:51:57,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:51:57,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960503884] [2024-10-11 19:51:57,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:51:57,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:51:57,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:51:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:51:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:51:58,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-11 19:51:58,004 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) [2024-10-11 19:51:58,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:51:58,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-11 19:51:58,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:00,584 INFO L124 PetriNetUnfolderBase]: 13824/27685 cut-off events. [2024-10-11 19:52:00,585 INFO L125 PetriNetUnfolderBase]: For 18254/18705 co-relation queries the response was YES. [2024-10-11 19:52:00,756 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 270530 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. [2024-10-11 19:52:00,841 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 351 selfloop transitions, 16 changer transitions 0/409 dead transitions. [2024-10-11 19:52:00,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 409 transitions, 3293 flow [2024-10-11 19:52:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:52:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:52:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-10-11 19:52:00,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2024-10-11 19:52:00,843 INFO L175 Difference]: Start difference. First operand has 148 places, 288 transitions, 1832 flow. Second operand 5 states and 310 transitions. [2024-10-11 19:52:00,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 409 transitions, 3293 flow [2024-10-11 19:52:00,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 409 transitions, 3256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:52:00,894 INFO L231 Difference]: Finished difference. Result has 153 places, 289 transitions, 1839 flow [2024-10-11 19:52:00,896 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} [2024-10-11 19:52:00,896 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 69 predicate places. [2024-10-11 19:52:00,897 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 289 transitions, 1839 flow [2024-10-11 19:52:00,898 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) [2024-10-11 19:52:00,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:00,898 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:00,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-11 19:52:01,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:01,099 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:52:01,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1576908916, now seen corresponding path program 1 times [2024-10-11 19:52:01,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:01,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329251550] [2024-10-11 19:52:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:01,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:01,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:01,101 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:01,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:52:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:01,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 19:52:01,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:01,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:52:01,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:52:01,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:52:01,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:52:01,343 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:52:01,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:52:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:52:01,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:52:01,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:01,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329251550] [2024-10-11 19:52:01,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329251550] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:01,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:01,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-11 19:52:01,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140343531] [2024-10-11 19:52:01,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:01,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:52:01,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:52:01,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:52:05,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 87 [2024-10-11 19:52:05,381 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) [2024-10-11 19:52:05,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:05,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 87 [2024-10-11 19:52:05,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand