./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-node-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:36:53,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:36:53,454 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:36:53,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:36:53,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:36:53,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:36:53,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:36:53,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:36:53,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:36:53,485 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:36:53,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:36:53,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:36:53,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:36:53,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:36:53,488 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:36:53,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:36:53,489 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:36:53,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:36:53,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:36:53,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:36:53,489 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:36:53,492 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:36:53,492 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:36:53,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:36:53,493 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:36:53,493 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:36:53,493 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:36:53,493 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:36:53,493 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:36:53,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:36:53,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:36:53,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:36:53,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:36:53,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:36:53,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:36:53,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:36:53,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:36:53,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:36:53,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:36:53,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:36:53,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:36:53,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:36:53,496 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf [2024-10-13 12:36:53,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:36:53,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:36:53,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:36:53,728 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:36:53,728 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:36:53,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2024-10-13 12:36:54,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:36:55,076 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:36:55,077 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2024-10-13 12:36:55,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea909248b/e2fba091ca2943cbbe40185913fca05c/FLAG10fbd975b [2024-10-13 12:36:55,479 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea909248b/e2fba091ca2943cbbe40185913fca05c [2024-10-13 12:36:55,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:36:55,482 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:36:55,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:36:55,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:36:55,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:36:55,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:36:55" (1/1) ... [2024-10-13 12:36:55,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4de58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:55, skipping insertion in model container [2024-10-13 12:36:55,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:36:55" (1/1) ... [2024-10-13 12:36:55,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:36:55,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:36:55,693 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-13 12:36:55,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@16e0e54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:55, skipping insertion in model container [2024-10-13 12:36:55,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:36:55,694 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:36:55,695 INFO L158 Benchmark]: Toolchain (without parser) took 212.81ms. Allocated memory is still 161.5MB. Free memory was 128.9MB in the beginning and 117.2MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:36:55,696 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory was 81.8MB in the beginning and 81.7MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:36:55,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.27ms. Allocated memory is still 161.5MB. Free memory was 128.9MB in the beginning and 117.2MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:36:55,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory was 81.8MB in the beginning and 81.7MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.27ms. Allocated memory is still 161.5MB. Free memory was 128.9MB in the beginning and 117.2MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:36:57,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:36:57,300 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:36:57,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:36:57,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:36:57,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:36:57,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:36:57,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:36:57,330 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:36:57,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:36:57,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:36:57,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:36:57,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:36:57,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:36:57,333 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:36:57,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:36:57,335 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:36:57,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:36:57,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:36:57,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:36:57,336 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:36:57,336 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:36:57,336 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:36:57,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:36:57,337 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:36:57,337 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:36:57,337 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:36:57,337 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:36:57,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:36:57,338 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:36:57,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:36:57,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:36:57,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:36:57,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:36:57,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:36:57,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:36:57,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:36:57,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:36:57,340 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:36:57,340 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:36:57,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:36:57,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:36:57,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:36:57,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:36:57,340 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:36:57,340 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf [2024-10-13 12:36:57,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:36:57,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:36:57,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:36:57,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:36:57,591 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:36:57,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2024-10-13 12:36:58,863 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:36:59,027 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:36:59,028 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2024-10-13 12:36:59,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43500990a/6e528026e0cd4bb9ad2df4903dff751f/FLAGb8b324cdc [2024-10-13 12:36:59,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43500990a/6e528026e0cd4bb9ad2df4903dff751f [2024-10-13 12:36:59,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:36:59,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:36:59,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:36:59,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:36:59,059 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:36:59,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216d542a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59, skipping insertion in model container [2024-10-13 12:36:59,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,082 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:36:59,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:36:59,300 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:36:59,305 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:36:59,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:36:59,340 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:36:59,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:36:59,388 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:36:59,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59 WrapperNode [2024-10-13 12:36:59,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:36:59,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:36:59,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:36:59,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:36:59,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,456 INFO L138 Inliner]: procedures = 28, calls = 52, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 408 [2024-10-13 12:36:59,457 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:36:59,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:36:59,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:36:59,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:36:59,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,506 INFO L175 MemorySlicer]: Split 26 memory accesses to 3 slices as follows [2, 15, 9]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 3, 3]. [2024-10-13 12:36:59,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:36:59,535 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:36:59,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:36:59,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:36:59,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (1/1) ... [2024-10-13 12:36:59,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:36:59,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:36:59,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:36:59,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:36:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:36:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-10-13 12:36:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-10-13 12:36:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-10-13 12:36:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:36:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:36:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-13 12:36:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:36:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:36:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-13 12:36:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:36:59,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:36:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:36:59,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:36:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:36:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:36:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:36:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:36:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:36:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-10-13 12:36:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-10-13 12:36:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-10-13 12:36:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:36:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:36:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-13 12:36:59,608 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:36:59,728 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:36:59,730 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:37:00,431 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:37:00,432 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:37:00,783 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:37:00,784 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 12:37:00,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:37:00 BoogieIcfgContainer [2024-10-13 12:37:00,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:37:00,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:37:00,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:37:00,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:37:00,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:36:59" (1/3) ... [2024-10-13 12:37:00,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12874089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:37:00, skipping insertion in model container [2024-10-13 12:37:00,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:59" (2/3) ... [2024-10-13 12:37:00,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12874089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:37:00, skipping insertion in model container [2024-10-13 12:37:00,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:37:00" (3/3) ... [2024-10-13 12:37:00,790 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2024-10-13 12:37:00,802 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:37:00,803 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-10-13 12:37:00,803 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:37:00,869 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:37:00,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 120 transitions, 261 flow [2024-10-13 12:37:00,937 INFO L124 PetriNetUnfolderBase]: 12/117 cut-off events. [2024-10-13 12:37:00,938 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:37:00,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 117 events. 12/117 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 407 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2024-10-13 12:37:00,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 120 transitions, 261 flow [2024-10-13 12:37:00,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 116 transitions, 250 flow [2024-10-13 12:37:00,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:37:00,963 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;@1ba14dfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:37:00,963 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-10-13 12:37:00,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:37:00,967 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:37:00,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:37:00,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:00,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:37:00,968 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:00,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1292102, now seen corresponding path program 1 times [2024-10-13 12:37:00,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:00,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056613251] [2024-10-13 12:37:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:00,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:00,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:00,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:01,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-13 12:37:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:01,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:37:01,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:01,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-13 12:37:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:37:01,172 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:01,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:01,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056613251] [2024-10-13 12:37:01,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056613251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:01,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:01,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:37:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745133372] [2024-10-13 12:37:01,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:01,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:37:01,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:01,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:37:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:37:01,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:01,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:01,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:01,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:01,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:02,023 INFO L124 PetriNetUnfolderBase]: 2205/4833 cut-off events. [2024-10-13 12:37:02,024 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-13 12:37:02,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 4833 events. 2205/4833 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39097 event pairs, 1390 based on Foata normal form. 1/3715 useless extension candidates. Maximal degree in co-relation 7419. Up to 2942 conditions per place. [2024-10-13 12:37:02,064 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 48 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-10-13 12:37:02,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 111 transitions, 340 flow [2024-10-13 12:37:02,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:37:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:37:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-10-13 12:37:02,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-10-13 12:37:02,077 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 250 flow. Second operand 3 states and 249 transitions. [2024-10-13 12:37:02,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 111 transitions, 340 flow [2024-10-13 12:37:02,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 328 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:37:02,110 INFO L231 Difference]: Finished difference. Result has 105 places, 111 transitions, 232 flow [2024-10-13 12:37:02,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=105, PETRI_TRANSITIONS=111} [2024-10-13 12:37:02,118 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -9 predicate places. [2024-10-13 12:37:02,119 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 232 flow [2024-10-13 12:37:02,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:02,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:02,120 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:37:02,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-13 12:37:02,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:02,324 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:02,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:02,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1292103, now seen corresponding path program 1 times [2024-10-13 12:37:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126297115] [2024-10-13 12:37:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:02,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:02,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:02,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:02,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-13 12:37:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:02,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:37:02,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:02,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:37:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:37:02,490 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:02,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126297115] [2024-10-13 12:37:02,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126297115] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:02,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:02,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:37:02,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054314300] [2024-10-13 12:37:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:02,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:37:02,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:02,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:37:02,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:37:02,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:02,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:02,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:02,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:02,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:03,498 INFO L124 PetriNetUnfolderBase]: 2207/4841 cut-off events. [2024-10-13 12:37:03,499 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-13 12:37:03,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7857 conditions, 4841 events. 2207/4841 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39113 event pairs, 1390 based on Foata normal form. 0/3719 useless extension candidates. Maximal degree in co-relation 7809. Up to 2955 conditions per place. [2024-10-13 12:37:03,532 INFO L140 encePairwiseOnDemand]: 108/120 looper letters, 52 selfloop transitions, 9 changer transitions 0/119 dead transitions. [2024-10-13 12:37:03,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 119 transitions, 372 flow [2024-10-13 12:37:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:37:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:37:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2024-10-13 12:37:03,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-10-13 12:37:03,535 INFO L175 Difference]: Start difference. First operand has 105 places, 111 transitions, 232 flow. Second operand 4 states and 325 transitions. [2024-10-13 12:37:03,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 119 transitions, 372 flow [2024-10-13 12:37:03,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 119 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:37:03,539 INFO L231 Difference]: Finished difference. Result has 109 places, 118 transitions, 298 flow [2024-10-13 12:37:03,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=109, PETRI_TRANSITIONS=118} [2024-10-13 12:37:03,540 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -5 predicate places. [2024-10-13 12:37:03,540 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 118 transitions, 298 flow [2024-10-13 12:37:03,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:03,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:03,540 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:37:03,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-13 12:37:03,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:03,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:03,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:03,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1241752825, now seen corresponding path program 1 times [2024-10-13 12:37:03,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:03,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732046897] [2024-10-13 12:37:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:03,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:03,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:03,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:03,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-13 12:37:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:03,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:37:03,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:03,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:37:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:37:03,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:37:04,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732046897] [2024-10-13 12:37:04,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732046897] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:04,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:04,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:37:04,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110038178] [2024-10-13 12:37:04,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:04,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:37:04,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:04,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:37:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:37:05,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:05,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 118 transitions, 298 flow. Second operand has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:05,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:05,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:05,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:06,899 INFO L124 PetriNetUnfolderBase]: 2216/4868 cut-off events. [2024-10-13 12:37:06,900 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-13 12:37:06,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7968 conditions, 4868 events. 2216/4868 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39238 event pairs, 1390 based on Foata normal form. 0/3745 useless extension candidates. Maximal degree in co-relation 7822. Up to 2958 conditions per place. [2024-10-13 12:37:06,939 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 52 selfloop transitions, 36 changer transitions 0/146 dead transitions. [2024-10-13 12:37:06,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 146 transitions, 590 flow [2024-10-13 12:37:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:37:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:37:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 747 transitions. [2024-10-13 12:37:06,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6225 [2024-10-13 12:37:06,943 INFO L175 Difference]: Start difference. First operand has 109 places, 118 transitions, 298 flow. Second operand 10 states and 747 transitions. [2024-10-13 12:37:06,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 146 transitions, 590 flow [2024-10-13 12:37:06,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 146 transitions, 590 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:37:06,946 INFO L231 Difference]: Finished difference. Result has 121 places, 146 transitions, 538 flow [2024-10-13 12:37:06,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=538, PETRI_PLACES=121, PETRI_TRANSITIONS=146} [2024-10-13 12:37:06,947 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 7 predicate places. [2024-10-13 12:37:06,947 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 146 transitions, 538 flow [2024-10-13 12:37:06,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:06,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:06,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:06,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-13 12:37:07,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:07,148 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:07,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:07,149 INFO L85 PathProgramCache]: Analyzing trace with hash 506332438, now seen corresponding path program 1 times [2024-10-13 12:37:07,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:07,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402350047] [2024-10-13 12:37:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:07,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:07,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:07,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:07,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-13 12:37:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:07,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:37:07,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:07,241 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 5 [2024-10-13 12:37:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:37:07,283 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:07,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402350047] [2024-10-13 12:37:07,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402350047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:07,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:07,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:37:07,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716991701] [2024-10-13 12:37:07,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:07,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:07,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:07,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:37:07,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:07,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 146 transitions, 538 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:07,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:07,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:07,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:08,123 INFO L124 PetriNetUnfolderBase]: 2217/4872 cut-off events. [2024-10-13 12:37:08,124 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-10-13 12:37:08,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8041 conditions, 4872 events. 2217/4872 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39256 event pairs, 1390 based on Foata normal form. 0/3754 useless extension candidates. Maximal degree in co-relation 7954. Up to 2985 conditions per place. [2024-10-13 12:37:08,152 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 82 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2024-10-13 12:37:08,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 149 transitions, 726 flow [2024-10-13 12:37:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2024-10-13 12:37:08,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2024-10-13 12:37:08,154 INFO L175 Difference]: Start difference. First operand has 121 places, 146 transitions, 538 flow. Second operand 5 states and 382 transitions. [2024-10-13 12:37:08,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 149 transitions, 726 flow [2024-10-13 12:37:08,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 149 transitions, 643 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-10-13 12:37:08,158 INFO L231 Difference]: Finished difference. Result has 123 places, 149 transitions, 496 flow [2024-10-13 12:37:08,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=123, PETRI_TRANSITIONS=149} [2024-10-13 12:37:08,159 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 9 predicate places. [2024-10-13 12:37:08,159 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 149 transitions, 496 flow [2024-10-13 12:37:08,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:08,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:08,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:08,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-13 12:37:08,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:08,361 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:08,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:08,362 INFO L85 PathProgramCache]: Analyzing trace with hash 506332437, now seen corresponding path program 1 times [2024-10-13 12:37:08,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:08,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970094011] [2024-10-13 12:37:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:08,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:08,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:08,365 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:08,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-13 12:37:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:08,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:37:08,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:08,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-13 12:37:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:37:08,434 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:08,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:08,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970094011] [2024-10-13 12:37:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970094011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:08,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:08,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:37:08,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272601141] [2024-10-13 12:37:08,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:08,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:37:08,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:08,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:37:08,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:37:08,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:08,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 149 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:08,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:08,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:08,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:08,988 INFO L124 PetriNetUnfolderBase]: 2217/4868 cut-off events. [2024-10-13 12:37:08,988 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-10-13 12:37:08,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8012 conditions, 4868 events. 2217/4868 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39227 event pairs, 1390 based on Foata normal form. 2/3755 useless extension candidates. Maximal degree in co-relation 7983. Up to 2973 conditions per place. [2024-10-13 12:37:09,010 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 82 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2024-10-13 12:37:09,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 146 transitions, 666 flow [2024-10-13 12:37:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:37:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:37:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2024-10-13 12:37:09,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2024-10-13 12:37:09,012 INFO L175 Difference]: Start difference. First operand has 123 places, 149 transitions, 496 flow. Second operand 3 states and 248 transitions. [2024-10-13 12:37:09,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 146 transitions, 666 flow [2024-10-13 12:37:09,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 146 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:37:09,015 INFO L231 Difference]: Finished difference. Result has 120 places, 146 transitions, 493 flow [2024-10-13 12:37:09,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=493, PETRI_PLACES=120, PETRI_TRANSITIONS=146} [2024-10-13 12:37:09,019 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 6 predicate places. [2024-10-13 12:37:09,019 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 146 transitions, 493 flow [2024-10-13 12:37:09,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:09,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:09,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:09,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-13 12:37:09,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:09,221 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:09,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:09,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1483561447, now seen corresponding path program 1 times [2024-10-13 12:37:09,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:09,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958845002] [2024-10-13 12:37:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:09,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:09,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:09,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:09,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-13 12:37:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:09,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 12:37:09,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:09,318 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 5 [2024-10-13 12:37:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:37:09,350 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:09,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958845002] [2024-10-13 12:37:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958845002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:09,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:37:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822672672] [2024-10-13 12:37:09,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:09,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:37:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:37:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:37:09,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:09,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 146 transitions, 493 flow. Second operand has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:09,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:09,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:09,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:10,133 INFO L124 PetriNetUnfolderBase]: 2218/4871 cut-off events. [2024-10-13 12:37:10,134 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-10-13 12:37:10,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8024 conditions, 4871 events. 2218/4871 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39306 event pairs, 1390 based on Foata normal form. 0/3753 useless extension candidates. Maximal degree in co-relation 7995. Up to 2980 conditions per place. [2024-10-13 12:37:10,156 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 85 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2024-10-13 12:37:10,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 149 transitions, 687 flow [2024-10-13 12:37:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:37:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:37:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2024-10-13 12:37:10,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2024-10-13 12:37:10,162 INFO L175 Difference]: Start difference. First operand has 120 places, 146 transitions, 493 flow. Second operand 5 states and 382 transitions. [2024-10-13 12:37:10,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 149 transitions, 687 flow [2024-10-13 12:37:10,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 149 transitions, 675 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:37:10,165 INFO L231 Difference]: Finished difference. Result has 124 places, 149 transitions, 519 flow [2024-10-13 12:37:10,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=124, PETRI_TRANSITIONS=149} [2024-10-13 12:37:10,166 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 10 predicate places. [2024-10-13 12:37:10,166 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 149 transitions, 519 flow [2024-10-13 12:37:10,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:10,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:10,166 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:10,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-13 12:37:10,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:10,370 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:10,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1254212453, now seen corresponding path program 1 times [2024-10-13 12:37:10,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:10,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844419831] [2024-10-13 12:37:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:10,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:10,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:10,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:10,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-13 12:37:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:10,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:37:10,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:10,458 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 5 [2024-10-13 12:37:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:37:10,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:37:10,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:10,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844419831] [2024-10-13 12:37:10,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844419831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:10,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:10,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-13 12:37:10,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501582173] [2024-10-13 12:37:10,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:10,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:37:10,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:10,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:37:10,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:37:11,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:11,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 149 transitions, 519 flow. Second operand has 11 states, 11 states have (on average 66.81818181818181) internal successors, (735), 11 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:11,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:11,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:11,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:14,035 INFO L124 PetriNetUnfolderBase]: 2224/4889 cut-off events. [2024-10-13 12:37:14,035 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-10-13 12:37:14,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8087 conditions, 4889 events. 2224/4889 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39368 event pairs, 1390 based on Foata normal form. 0/3770 useless extension candidates. Maximal degree in co-relation 8046. Up to 2986 conditions per place. [2024-10-13 12:37:14,066 INFO L140 encePairwiseOnDemand]: 106/120 looper letters, 82 selfloop transitions, 30 changer transitions 0/167 dead transitions. [2024-10-13 12:37:14,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 167 transitions, 812 flow [2024-10-13 12:37:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:37:14,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:37:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 798 transitions. [2024-10-13 12:37:14,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045454545454545 [2024-10-13 12:37:14,069 INFO L175 Difference]: Start difference. First operand has 124 places, 149 transitions, 519 flow. Second operand 11 states and 798 transitions. [2024-10-13 12:37:14,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 167 transitions, 812 flow [2024-10-13 12:37:14,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 167 transitions, 797 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:37:14,072 INFO L231 Difference]: Finished difference. Result has 136 places, 167 transitions, 684 flow [2024-10-13 12:37:14,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=684, PETRI_PLACES=136, PETRI_TRANSITIONS=167} [2024-10-13 12:37:14,073 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 22 predicate places. [2024-10-13 12:37:14,073 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 167 transitions, 684 flow [2024-10-13 12:37:14,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.81818181818181) internal successors, (735), 11 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:14,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:14,074 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-13 12:37:14,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-13 12:37:14,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:14,278 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:14,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1867256591, now seen corresponding path program 2 times [2024-10-13 12:37:14,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301228213] [2024-10-13 12:37:14,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:37:14,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:14,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:14,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:14,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-13 12:37:14,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:37:14,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:37:14,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:37:14,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:14,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:37:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:37:14,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:37:14,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:14,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301228213] [2024-10-13 12:37:14,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301228213] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:14,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:14,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:37:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557717971] [2024-10-13 12:37:14,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:14,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:37:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:37:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:37:17,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:17,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 167 transitions, 684 flow. Second operand has 14 states, 14 states have (on average 66.57142857142857) internal successors, (932), 14 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:17,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:17,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:17,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:31,720 INFO L124 PetriNetUnfolderBase]: 2242/4943 cut-off events. [2024-10-13 12:37:31,721 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-13 12:37:31,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8346 conditions, 4943 events. 2242/4943 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39899 event pairs, 1390 based on Foata normal form. 18/3836 useless extension candidates. Maximal degree in co-relation 8290. Up to 2988 conditions per place. [2024-10-13 12:37:31,750 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 76 selfloop transitions, 90 changer transitions 0/221 dead transitions. [2024-10-13 12:37:31,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 221 transitions, 1304 flow [2024-10-13 12:37:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:37:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:37:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1590 transitions. [2024-10-13 12:37:31,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-10-13 12:37:31,755 INFO L175 Difference]: Start difference. First operand has 136 places, 167 transitions, 684 flow. Second operand 22 states and 1590 transitions. [2024-10-13 12:37:31,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 221 transitions, 1304 flow [2024-10-13 12:37:31,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 221 transitions, 1247 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-13 12:37:31,766 INFO L231 Difference]: Finished difference. Result has 159 places, 221 transitions, 1181 flow [2024-10-13 12:37:31,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1181, PETRI_PLACES=159, PETRI_TRANSITIONS=221} [2024-10-13 12:37:31,767 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 45 predicate places. [2024-10-13 12:37:31,767 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 221 transitions, 1181 flow [2024-10-13 12:37:31,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 66.57142857142857) internal successors, (932), 14 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:31,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:31,768 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:31,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-10-13 12:37:31,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:31,969 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:31,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1563952764, now seen corresponding path program 1 times [2024-10-13 12:37:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:31,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539589389] [2024-10-13 12:37:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:31,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:31,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:31,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:31,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-13 12:37:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:32,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:37:32,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:37:32,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:37:32,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539589389] [2024-10-13 12:37:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539589389] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:32,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-13 12:37:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13546695] [2024-10-13 12:37:32,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:32,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:37:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:37:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:37:32,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-13 12:37:32,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 221 transitions, 1181 flow. Second operand has 10 states, 10 states have (on average 69.7) internal successors, (697), 10 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:32,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:32,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-13 12:37:32,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:33,731 INFO L124 PetriNetUnfolderBase]: 4461/9802 cut-off events. [2024-10-13 12:37:33,731 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-10-13 12:37:33,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16645 conditions, 9802 events. 4461/9802 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 88669 event pairs, 2784 based on Foata normal form. 2/7681 useless extension candidates. Maximal degree in co-relation 16550. Up to 3023 conditions per place. [2024-10-13 12:37:33,789 INFO L140 encePairwiseOnDemand]: 109/120 looper letters, 223 selfloop transitions, 68 changer transitions 0/349 dead transitions. [2024-10-13 12:37:33,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 349 transitions, 2497 flow [2024-10-13 12:37:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:37:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:37:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 718 transitions. [2024-10-13 12:37:33,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6648148148148149 [2024-10-13 12:37:33,791 INFO L175 Difference]: Start difference. First operand has 159 places, 221 transitions, 1181 flow. Second operand 9 states and 718 transitions. [2024-10-13 12:37:33,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 349 transitions, 2497 flow [2024-10-13 12:37:33,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 349 transitions, 2113 flow, removed 114 selfloop flow, removed 9 redundant places. [2024-10-13 12:37:33,801 INFO L231 Difference]: Finished difference. Result has 158 places, 252 transitions, 1265 flow [2024-10-13 12:37:33,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1265, PETRI_PLACES=158, PETRI_TRANSITIONS=252} [2024-10-13 12:37:33,803 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 44 predicate places. [2024-10-13 12:37:33,803 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 252 transitions, 1265 flow [2024-10-13 12:37:33,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.7) internal successors, (697), 10 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:33,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:33,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:33,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-10-13 12:37:34,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:34,005 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:34,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:34,005 INFO L85 PathProgramCache]: Analyzing trace with hash -945424301, now seen corresponding path program 1 times [2024-10-13 12:37:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:34,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166724286] [2024-10-13 12:37:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:34,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:34,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:34,007 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:34,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-13 12:37:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:34,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:37:34,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:37:34,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:34,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:34,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166724286] [2024-10-13 12:37:34,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166724286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:34,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:34,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:37:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502519931] [2024-10-13 12:37:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:34,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:37:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:37:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:37:34,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-13 12:37:34,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 252 transitions, 1265 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:34,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:34,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-13 12:37:34,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:35,166 INFO L124 PetriNetUnfolderBase]: 4469/9848 cut-off events. [2024-10-13 12:37:35,166 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2024-10-13 12:37:35,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16572 conditions, 9848 events. 4469/9848 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 89209 event pairs, 2780 based on Foata normal form. 2/7627 useless extension candidates. Maximal degree in co-relation 16465. Up to 6063 conditions per place. [2024-10-13 12:37:35,223 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 178 selfloop transitions, 14 changer transitions 0/250 dead transitions. [2024-10-13 12:37:35,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 250 transitions, 1631 flow [2024-10-13 12:37:35,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:37:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:37:35,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-10-13 12:37:35,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-10-13 12:37:35,225 INFO L175 Difference]: Start difference. First operand has 158 places, 252 transitions, 1265 flow. Second operand 4 states and 327 transitions. [2024-10-13 12:37:35,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 250 transitions, 1631 flow [2024-10-13 12:37:35,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 250 transitions, 1630 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:37:35,233 INFO L231 Difference]: Finished difference. Result has 160 places, 250 transitions, 1274 flow [2024-10-13 12:37:35,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1274, PETRI_PLACES=160, PETRI_TRANSITIONS=250} [2024-10-13 12:37:35,233 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 46 predicate places. [2024-10-13 12:37:35,234 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 250 transitions, 1274 flow [2024-10-13 12:37:35,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:35,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:35,234 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:35,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-13 12:37:35,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:35,435 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:35,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash -378259573, now seen corresponding path program 1 times [2024-10-13 12:37:35,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:35,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204847814] [2024-10-13 12:37:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:35,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:35,437 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:35,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-13 12:37:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:35,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:37:35,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:37:35,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:37:35,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:35,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204847814] [2024-10-13 12:37:35,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204847814] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:35,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:35,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-13 12:37:35,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980014706] [2024-10-13 12:37:35,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:35,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:37:35,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:37:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:37:35,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-13 12:37:35,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 250 transitions, 1274 flow. Second operand has 12 states, 12 states have (on average 70.25) internal successors, (843), 12 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:35,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:35,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-13 12:37:35,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:38,188 INFO L124 PetriNetUnfolderBase]: 8861/19428 cut-off events. [2024-10-13 12:37:38,189 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2024-10-13 12:37:38,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32340 conditions, 19428 events. 8861/19428 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 195816 event pairs, 5568 based on Foata normal form. 4/15195 useless extension candidates. Maximal degree in co-relation 32170. Up to 6005 conditions per place. [2024-10-13 12:37:38,338 INFO L140 encePairwiseOnDemand]: 108/120 looper letters, 170 selfloop transitions, 104 changer transitions 0/332 dead transitions. [2024-10-13 12:37:38,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 332 transitions, 2258 flow [2024-10-13 12:37:38,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:37:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:37:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2024-10-13 12:37:38,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6592592592592592 [2024-10-13 12:37:38,340 INFO L175 Difference]: Start difference. First operand has 160 places, 250 transitions, 1274 flow. Second operand 9 states and 712 transitions. [2024-10-13 12:37:38,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 332 transitions, 2258 flow [2024-10-13 12:37:38,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 332 transitions, 2244 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:37:38,349 INFO L231 Difference]: Finished difference. Result has 166 places, 293 transitions, 1788 flow [2024-10-13 12:37:38,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=166, PETRI_TRANSITIONS=293} [2024-10-13 12:37:38,350 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 52 predicate places. [2024-10-13 12:37:38,350 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 293 transitions, 1788 flow [2024-10-13 12:37:38,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.25) internal successors, (843), 12 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:38,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:38,351 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:38,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-13 12:37:38,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:38,552 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:38,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1149697714, now seen corresponding path program 1 times [2024-10-13 12:37:38,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:38,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46469221] [2024-10-13 12:37:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:38,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:38,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:38,554 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:38,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-13 12:37:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:38,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:37:38,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:38,670 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 5 [2024-10-13 12:37:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:37:38,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:37:38,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46469221] [2024-10-13 12:37:38,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46469221] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:38,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:38,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2024-10-13 12:37:38,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361190827] [2024-10-13 12:37:38,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:39,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:37:39,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:39,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:37:39,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:37:40,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:40,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 293 transitions, 1788 flow. Second operand has 11 states, 11 states have (on average 67.81818181818181) internal successors, (746), 11 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:40,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:40,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:40,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:46,162 INFO L124 PetriNetUnfolderBase]: 8901/19584 cut-off events. [2024-10-13 12:37:46,162 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-10-13 12:37:46,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32920 conditions, 19584 events. 8901/19584 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 198118 event pairs, 5560 based on Foata normal form. 20/15163 useless extension candidates. Maximal degree in co-relation 32748. Up to 11912 conditions per place. [2024-10-13 12:37:46,348 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 147 selfloop transitions, 140 changer transitions 0/342 dead transitions. [2024-10-13 12:37:46,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 342 transitions, 2814 flow [2024-10-13 12:37:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 12:37:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 12:37:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1067 transitions. [2024-10-13 12:37:46,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5927777777777777 [2024-10-13 12:37:46,352 INFO L175 Difference]: Start difference. First operand has 166 places, 293 transitions, 1788 flow. Second operand 15 states and 1067 transitions. [2024-10-13 12:37:46,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 342 transitions, 2814 flow [2024-10-13 12:37:46,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 342 transitions, 2799 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:37:46,364 INFO L231 Difference]: Finished difference. Result has 183 places, 342 transitions, 2657 flow [2024-10-13 12:37:46,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2657, PETRI_PLACES=183, PETRI_TRANSITIONS=342} [2024-10-13 12:37:46,365 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 69 predicate places. [2024-10-13 12:37:46,365 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 342 transitions, 2657 flow [2024-10-13 12:37:46,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.81818181818181) internal successors, (746), 11 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:46,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:46,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:46,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-13 12:37:46,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:46,566 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:46,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1362457411, now seen corresponding path program 1 times [2024-10-13 12:37:46,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:46,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928330531] [2024-10-13 12:37:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:46,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:46,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:46,569 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:46,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-13 12:37:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:46,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:37:46,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 12:37:46,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:37:46,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928330531] [2024-10-13 12:37:46,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928330531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:37:46,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:37:46,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:37:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971510842] [2024-10-13 12:37:46,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:37:46,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:37:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:46,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:37:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:37:46,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-13 12:37:46,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 342 transitions, 2657 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:46,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:46,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-13 12:37:46,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:48,846 INFO L124 PetriNetUnfolderBase]: 8899/19582 cut-off events. [2024-10-13 12:37:48,846 INFO L125 PetriNetUnfolderBase]: For 668/668 co-relation queries the response was YES. [2024-10-13 12:37:48,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33164 conditions, 19582 events. 8899/19582 cut-off events. For 668/668 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 198012 event pairs, 5560 based on Foata normal form. 2/15144 useless extension candidates. Maximal degree in co-relation 32986. Up to 12055 conditions per place. [2024-10-13 12:37:48,957 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 270 selfloop transitions, 13 changer transitions 0/341 dead transitions. [2024-10-13 12:37:48,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 341 transitions, 3217 flow [2024-10-13 12:37:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:37:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:37:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-10-13 12:37:48,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-10-13 12:37:48,959 INFO L175 Difference]: Start difference. First operand has 183 places, 342 transitions, 2657 flow. Second operand 4 states and 327 transitions. [2024-10-13 12:37:48,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 341 transitions, 3217 flow [2024-10-13 12:37:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 341 transitions, 3015 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-10-13 12:37:48,970 INFO L231 Difference]: Finished difference. Result has 181 places, 341 transitions, 2475 flow [2024-10-13 12:37:48,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2475, PETRI_PLACES=181, PETRI_TRANSITIONS=341} [2024-10-13 12:37:48,971 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 67 predicate places. [2024-10-13 12:37:48,971 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 341 transitions, 2475 flow [2024-10-13 12:37:48,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:48,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:48,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:48,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-10-13 12:37:49,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:49,172 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:49,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash -518592336, now seen corresponding path program 1 times [2024-10-13 12:37:49,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867771929] [2024-10-13 12:37:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:49,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:49,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:49,175 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:49,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-13 12:37:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:49,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 12:37:49,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 12:37:49,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 12:37:49,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867771929] [2024-10-13 12:37:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867771929] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:49,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:49,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-13 12:37:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411202682] [2024-10-13 12:37:49,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:49,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:37:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:49,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:37:49,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:37:49,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-13 12:37:49,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 341 transitions, 2475 flow. Second operand has 12 states, 12 states have (on average 70.66666666666667) internal successors, (848), 12 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:49,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:49,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-13 12:37:49,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:37:54,294 INFO L124 PetriNetUnfolderBase]: 17719/38864 cut-off events. [2024-10-13 12:37:54,294 INFO L125 PetriNetUnfolderBase]: For 1016/1016 co-relation queries the response was YES. [2024-10-13 12:37:54,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65368 conditions, 38864 events. 17719/38864 cut-off events. For 1016/1016 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 432628 event pairs, 11136 based on Foata normal form. 8/30400 useless extension candidates. Maximal degree in co-relation 65131. Up to 11919 conditions per place. [2024-10-13 12:37:54,682 INFO L140 encePairwiseOnDemand]: 108/120 looper letters, 235 selfloop transitions, 262 changer transitions 0/555 dead transitions. [2024-10-13 12:37:54,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 555 transitions, 5349 flow [2024-10-13 12:37:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:37:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:37:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 715 transitions. [2024-10-13 12:37:54,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6620370370370371 [2024-10-13 12:37:54,685 INFO L175 Difference]: Start difference. First operand has 181 places, 341 transitions, 2475 flow. Second operand 9 states and 715 transitions. [2024-10-13 12:37:54,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 555 transitions, 5349 flow [2024-10-13 12:37:54,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 555 transitions, 5348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:37:54,705 INFO L231 Difference]: Finished difference. Result has 188 places, 463 transitions, 4324 flow [2024-10-13 12:37:54,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4324, PETRI_PLACES=188, PETRI_TRANSITIONS=463} [2024-10-13 12:37:54,706 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 74 predicate places. [2024-10-13 12:37:54,706 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 463 transitions, 4324 flow [2024-10-13 12:37:54,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.66666666666667) internal successors, (848), 12 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:54,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:37:54,707 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:37:54,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-13 12:37:54,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:54,907 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:37:54,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:37:54,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1565297033, now seen corresponding path program 1 times [2024-10-13 12:37:54,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:37:54,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026860286] [2024-10-13 12:37:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:37:54,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:37:54,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:37:54,909 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:37:54,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-13 12:37:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:37:55,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:37:55,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:37:55,131 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 5 [2024-10-13 12:37:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:37:55,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:37:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:37:55,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:37:55,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026860286] [2024-10-13 12:37:55,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026860286] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:37:55,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:37:55,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-13 12:37:55,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706658896] [2024-10-13 12:37:55,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:37:55,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:37:55,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:37:55,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:37:55,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:37:58,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-13 12:37:58,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 463 transitions, 4324 flow. Second operand has 15 states, 15 states have (on average 67.66666666666667) internal successors, (1015), 15 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:37:58,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:37:58,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-13 12:37:58,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:17,054 INFO L124 PetriNetUnfolderBase]: 17823/39248 cut-off events. [2024-10-13 12:38:17,054 INFO L125 PetriNetUnfolderBase]: For 1395/1395 co-relation queries the response was YES. [2024-10-13 12:38:17,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67085 conditions, 39248 events. 17823/39248 cut-off events. For 1395/1395 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 438087 event pairs, 11120 based on Foata normal form. 64/30432 useless extension candidates. Maximal degree in co-relation 66847. Up to 23785 conditions per place. [2024-10-13 12:38:17,533 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 187 selfloop transitions, 363 changer transitions 0/605 dead transitions. [2024-10-13 12:38:17,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 605 transitions, 6972 flow [2024-10-13 12:38:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:38:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:38:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1613 transitions. [2024-10-13 12:38:17,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5844202898550724 [2024-10-13 12:38:17,537 INFO L175 Difference]: Start difference. First operand has 188 places, 463 transitions, 4324 flow. Second operand 23 states and 1613 transitions. [2024-10-13 12:38:17,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 605 transitions, 6972 flow [2024-10-13 12:38:17,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 605 transitions, 6958 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:17,682 INFO L231 Difference]: Finished difference. Result has 214 places, 605 transitions, 6918 flow [2024-10-13 12:38:17,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=4310, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6918, PETRI_PLACES=214, PETRI_TRANSITIONS=605} [2024-10-13 12:38:17,683 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 100 predicate places. [2024-10-13 12:38:17,683 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 605 transitions, 6918 flow [2024-10-13 12:38:17,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 67.66666666666667) internal successors, (1015), 15 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:17,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:17,683 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:17,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-13 12:38:17,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:38:17,884 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:38:17,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1144254256, now seen corresponding path program 1 times [2024-10-13 12:38:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:38:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45035506] [2024-10-13 12:38:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:17,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:38:17,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:38:17,886 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:38:17,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-13 12:38:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:18,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:38:18,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:18,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-13 12:38:18,149 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:38:18,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-13 12:38:18,184 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:38:18,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-13 12:38:18,209 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:38:18,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-13 12:38:18,233 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:38:18,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-13 12:38:18,253 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-13 12:38:18,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-13 12:38:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 12:38:18,271 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:38:18,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:38:18,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45035506] [2024-10-13 12:38:18,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45035506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:18,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:18,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:38:18,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510275724] [2024-10-13 12:38:18,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:18,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:38:18,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:38:18,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:38:18,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:38:18,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 120 [2024-10-13 12:38:18,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 605 transitions, 6918 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:18,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:18,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 120 [2024-10-13 12:38:18,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:23,246 INFO L124 PetriNetUnfolderBase]: 22815/44600 cut-off events. [2024-10-13 12:38:23,246 INFO L125 PetriNetUnfolderBase]: For 1752/1752 co-relation queries the response was YES. [2024-10-13 12:38:23,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79937 conditions, 44600 events. 22815/44600 cut-off events. For 1752/1752 co-relation queries the response was YES. Maximal size of possible extension queue 2213. Compared 461204 event pairs, 14840 based on Foata normal form. 0/37768 useless extension candidates. Maximal degree in co-relation 79690. Up to 30760 conditions per place. [2024-10-13 12:38:23,796 INFO L140 encePairwiseOnDemand]: 113/120 looper letters, 518 selfloop transitions, 31 changer transitions 0/601 dead transitions. [2024-10-13 12:38:23,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 601 transitions, 8008 flow [2024-10-13 12:38:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 351 transitions. [2024-10-13 12:38:23,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.585 [2024-10-13 12:38:23,798 INFO L175 Difference]: Start difference. First operand has 214 places, 605 transitions, 6918 flow. Second operand 5 states and 351 transitions. [2024-10-13 12:38:23,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 601 transitions, 8008 flow [2024-10-13 12:38:23,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 601 transitions, 7441 flow, removed 248 selfloop flow, removed 5 redundant places. [2024-10-13 12:38:23,830 INFO L231 Difference]: Finished difference. Result has 209 places, 601 transitions, 6405 flow [2024-10-13 12:38:23,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=6343, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6405, PETRI_PLACES=209, PETRI_TRANSITIONS=601} [2024-10-13 12:38:23,831 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 95 predicate places. [2024-10-13 12:38:23,831 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 601 transitions, 6405 flow [2024-10-13 12:38:23,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:23,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:23,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:23,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:24,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:38:24,032 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-13 12:38:24,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1144254255, now seen corresponding path program 1 times [2024-10-13 12:38:24,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:38:24,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776259726] [2024-10-13 12:38:24,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:24,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:38:24,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:38:24,035 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:38:24,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-13 12:38:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:24,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-13 12:38:24,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:24,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-13 12:38:24,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:38:24,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:38:24,407 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 18 treesize of output 13 [2024-10-13 12:38:24,421 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:38:24,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-13 12:38:24,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:38:24,493 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 18 treesize of output 13 [2024-10-13 12:38:24,518 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-10-13 12:38:24,518 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 19 treesize of output 27 [2024-10-13 12:38:24,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:38:24,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 12:38:24,677 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-10-13 12:38:24,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-10-13 12:38:24,774 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-10-13 12:38:24,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-10-13 12:38:24,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 12:38:24,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:38:24,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 12:38:24,879 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-10-13 12:38:24,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-10-13 12:38:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 12:38:24,954 INFO L311 TraceCheckSpWp]: Computing backward predicates...