./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-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:49:05,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:49:05,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:49:05,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:49:05,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:49:05,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:49:05,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:49:05,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:49:05,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:49:05,591 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:49:05,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:49:05,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:49:05,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:49:05,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:49:05,593 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:49:05,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:49:05,594 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:49:05,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:49:05,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:49:05,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:49:05,596 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:49:05,596 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:49:05,596 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:49:05,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:49:05,597 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:49:05,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:49:05,598 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:49:05,598 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:49:05,598 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:49:05,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:49:05,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:49:05,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:49:05,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:49:05,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:49:05,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:49:05,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:49:05,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:49:05,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:49:05,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:49:05,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:49:05,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:49:05,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:49:05,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-10-14 19:49:05,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:49:05,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:49:05,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:49:05,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:49:05,909 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:49:05,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-14 19:49:07,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:49:07,498 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:49:07,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-14 19:49:07,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ca0db3e/a98dc840a1a64a3c87051710a7629f9c/FLAG7b993188f [2024-10-14 19:49:07,887 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ca0db3e/a98dc840a1a64a3c87051710a7629f9c [2024-10-14 19:49:07,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:49:07,891 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:49:07,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:49:07,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:49:07,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:49:07,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:49:07" (1/1) ... [2024-10-14 19:49:07,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b98ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:07, skipping insertion in model container [2024-10-14 19:49:07,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:49:07" (1/1) ... [2024-10-14 19:49:07,932 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:49:08,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:49:08,146 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:49:08,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@546a3716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:08, skipping insertion in model container [2024-10-14 19:49:08,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:49:08,147 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:49:08,149 INFO L158 Benchmark]: Toolchain (without parser) took 257.07ms. Allocated memory was 130.0MB in the beginning and 182.5MB in the end (delta: 52.4MB). Free memory was 76.7MB in the beginning and 153.5MB in the end (delta: -76.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2024-10-14 19:49:08,149 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:49:08,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.74ms. Allocated memory was 130.0MB in the beginning and 182.5MB in the end (delta: 52.4MB). Free memory was 76.4MB in the beginning and 153.5MB in the end (delta: -77.1MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2024-10-14 19:49:08,151 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.74ms. Allocated memory was 130.0MB in the beginning and 182.5MB in the end (delta: 52.4MB). Free memory was 76.4MB in the beginning and 153.5MB in the end (delta: -77.1MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 122]: 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-name-comparator-symm.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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:49:10,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:49:10,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:49:10,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:49:10,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:49:10,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:49:10,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:49:10,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:49:10,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:49:10,270 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:49:10,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:49:10,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:49:10,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:49:10,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:49:10,272 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:49:10,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:49:10,273 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:49:10,273 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:49:10,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:49:10,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:49:10,274 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:49:10,275 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:49:10,275 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:49:10,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:49:10,276 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:49:10,276 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:49:10,276 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:49:10,277 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:49:10,277 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:49:10,277 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:49:10,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:49:10,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:49:10,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:49:10,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:49:10,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:49:10,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:49:10,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:49:10,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:49:10,280 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:49:10,280 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:49:10,280 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:49:10,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:49:10,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:49:10,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:49:10,282 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:49:10,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-10-14 19:49:10,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:49:10,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:49:10,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:49:10,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:49:10,640 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:49:10,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-14 19:49:12,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:49:12,416 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:49:12,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-14 19:49:12,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cd6872b/ef31fb2fde134f359a368326a829f1ae/FLAG834020f0c [2024-10-14 19:49:12,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cd6872b/ef31fb2fde134f359a368326a829f1ae [2024-10-14 19:49:12,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:49:12,460 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:49:12,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:49:12,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:49:12,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:49:12,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:12,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecc82df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12, skipping insertion in model container [2024-10-14 19:49:12,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:12,501 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:49:12,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:49:12,779 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:49:12,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:49:12,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:49:12,823 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:49:12,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:49:12,886 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:49:12,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12 WrapperNode [2024-10-14 19:49:12,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:49:12,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:49:12,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:49:12,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:49:12,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:12,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:12,950 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 208 [2024-10-14 19:49:12,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:49:12,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:49:12,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:49:12,953 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:49:12,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:12,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:12,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:12,989 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 19:49:12,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:12,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:13,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:13,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:13,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:13,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:13,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:49:13,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:49:13,023 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:49:13,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:49:13,024 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (1/1) ... [2024-10-14 19:49:13,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:49:13,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:49:13,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:49:13,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:49:13,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:49:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:49:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:49:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:49:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:49:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:49:13,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:49:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:49:13,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:49:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:49:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:49:13,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:49:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:49:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:49:13,109 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:49:13,270 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:49:13,273 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:49:13,767 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:49:13,769 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:49:14,100 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:49:14,100 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 19:49:14,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:49:14 BoogieIcfgContainer [2024-10-14 19:49:14,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:49:14,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:49:14,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:49:14,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:49:14,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:49:12" (1/3) ... [2024-10-14 19:49:14,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc2180b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:49:14, skipping insertion in model container [2024-10-14 19:49:14,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:49:12" (2/3) ... [2024-10-14 19:49:14,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc2180b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:49:14, skipping insertion in model container [2024-10-14 19:49:14,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:49:14" (3/3) ... [2024-10-14 19:49:14,110 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2024-10-14 19:49:14,127 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:49:14,127 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-14 19:49:14,127 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:49:14,210 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:49:14,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 88 flow [2024-10-14 19:49:14,281 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2024-10-14 19:49:14,282 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:49:14,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 5/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-10-14 19:49:14,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 88 flow [2024-10-14 19:49:14,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 80 flow [2024-10-14 19:49:14,298 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:49:14,306 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;@8234a4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:49:14,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-14 19:49:14,309 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:49:14,310 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:49:14,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:49:14,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:14,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:49:14,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:14,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 657532, now seen corresponding path program 1 times [2024-10-14 19:49:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:14,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141824073] [2024-10-14 19:49:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:14,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:14,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:14,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:14,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:49:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:14,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:49:14,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:14,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:49:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:49:14,488 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:14,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:14,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141824073] [2024-10-14 19:49:14,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141824073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:14,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:49:14,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785323676] [2024-10-14 19:49:14,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:14,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:49:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:49:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:49:14,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:14,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:14,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:14,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:14,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:14,744 INFO L124 PetriNetUnfolderBase]: 128/255 cut-off events. [2024-10-14 19:49:14,744 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-14 19:49:14,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 255 events. 128/255 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 903 event pairs, 100 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 450. Up to 221 conditions per place. [2024-10-14 19:49:14,752 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 21 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-10-14 19:49:14,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 116 flow [2024-10-14 19:49:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:49:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:49:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-14 19:49:14,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-10-14 19:49:14,767 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 54 transitions. [2024-10-14 19:49:14,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 116 flow [2024-10-14 19:49:14,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:49:14,772 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-10-14 19:49:14,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-10-14 19:49:14,779 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-10-14 19:49:14,779 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-10-14 19:49:14,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:14,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:14,780 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:49:14,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:14,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:14,984 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:14,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:14,986 INFO L85 PathProgramCache]: Analyzing trace with hash 657533, now seen corresponding path program 1 times [2024-10-14 19:49:14,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:14,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773675076] [2024-10-14 19:49:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:14,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:14,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:14,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:14,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:49:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:15,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:49:15,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:15,092 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 [2024-10-14 19:49:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:49:15,118 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:15,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:15,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773675076] [2024-10-14 19:49:15,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773675076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:15,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:15,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:49:15,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103204065] [2024-10-14 19:49:15,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:15,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:49:15,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:15,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:49:15,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:49:15,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:15,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:15,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:15,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:15,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:15,295 INFO L124 PetriNetUnfolderBase]: 129/258 cut-off events. [2024-10-14 19:49:15,296 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 19:49:15,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 258 events. 129/258 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 920 event pairs, 100 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 476. Up to 226 conditions per place. [2024-10-14 19:49:15,298 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 24 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-10-14 19:49:15,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 128 flow [2024-10-14 19:49:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:49:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:49:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-10-14 19:49:15,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-10-14 19:49:15,300 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 3 states and 55 transitions. [2024-10-14 19:49:15,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 128 flow [2024-10-14 19:49:15,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:49:15,302 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 81 flow [2024-10-14 19:49:15,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2024-10-14 19:49:15,304 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2024-10-14 19:49:15,304 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 81 flow [2024-10-14 19:49:15,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:15,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:15,305 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:49:15,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 19:49:15,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:15,508 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:15,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:15,509 INFO L85 PathProgramCache]: Analyzing trace with hash 631909603, now seen corresponding path program 1 times [2024-10-14 19:49:15,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:15,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144318015] [2024-10-14 19:49:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:15,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:15,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:15,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:15,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:49:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:15,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:49:15,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:15,582 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 [2024-10-14 19:49:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:49:15,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:49:15,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:15,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144318015] [2024-10-14 19:49:15,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144318015] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:15,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:15,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2024-10-14 19:49:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496982434] [2024-10-14 19:49:15,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:15,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:49:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:15,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:49:15,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:49:15,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:15,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:15,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:15,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:15,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:16,147 INFO L124 PetriNetUnfolderBase]: 131/264 cut-off events. [2024-10-14 19:49:16,147 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 19:49:16,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 264 events. 131/264 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 969 event pairs, 100 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 476. Up to 228 conditions per place. [2024-10-14 19:49:16,150 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 26 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2024-10-14 19:49:16,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 169 flow [2024-10-14 19:49:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-10-14 19:49:16,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-10-14 19:49:16,153 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 81 flow. Second operand 5 states and 80 transitions. [2024-10-14 19:49:16,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 169 flow [2024-10-14 19:49:16,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:49:16,154 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 122 flow [2024-10-14 19:49:16,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-10-14 19:49:16,155 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-10-14 19:49:16,155 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 122 flow [2024-10-14 19:49:16,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:16,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:16,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:16,160 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 (4)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:16,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:16,359 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:16,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:16,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1745929134, now seen corresponding path program 1 times [2024-10-14 19:49:16,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:16,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411909516] [2024-10-14 19:49:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:16,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:16,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:16,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:16,365 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 (5)] Waiting until timeout for monitored process [2024-10-14 19:49:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:16,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:16,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:49:16,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:16,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:16,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411909516] [2024-10-14 19:49:16,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411909516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:16,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:16,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:49:16,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062842377] [2024-10-14 19:49:16,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:16,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:49:16,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:16,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:49:16,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:49:16,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:16,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:16,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:16,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:16,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:16,627 INFO L124 PetriNetUnfolderBase]: 130/263 cut-off events. [2024-10-14 19:49:16,627 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 19:49:16,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 263 events. 130/263 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 941 event pairs, 100 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 493. Up to 230 conditions per place. [2024-10-14 19:49:16,629 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-10-14 19:49:16,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 176 flow [2024-10-14 19:49:16,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:49:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:49:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-10-14 19:49:16,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-10-14 19:49:16,632 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 122 flow. Second operand 3 states and 56 transitions. [2024-10-14 19:49:16,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 176 flow [2024-10-14 19:49:16,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 166 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-14 19:49:16,634 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 110 flow [2024-10-14 19:49:16,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-10-14 19:49:16,635 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-10-14 19:49:16,635 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 110 flow [2024-10-14 19:49:16,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:16,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:16,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:16,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:16,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:16,839 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:16,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1097054956, now seen corresponding path program 1 times [2024-10-14 19:49:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:16,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333319086] [2024-10-14 19:49:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:16,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:16,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:16,852 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:16,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:49:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:16,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:49:16,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:49:17,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:49:17,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:17,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333319086] [2024-10-14 19:49:17,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333319086] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:17,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:17,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-10-14 19:49:17,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638197454] [2024-10-14 19:49:17,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:17,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:49:17,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:49:17,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:49:17,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:17,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:17,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:17,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:17,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:17,235 INFO L124 PetriNetUnfolderBase]: 128/261 cut-off events. [2024-10-14 19:49:17,235 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-14 19:49:17,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 261 events. 128/261 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 903 event pairs, 100 based on Foata normal form. 2/221 useless extension candidates. Maximal degree in co-relation 502. Up to 223 conditions per place. [2024-10-14 19:49:17,237 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 23 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-10-14 19:49:17,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 164 flow [2024-10-14 19:49:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-10-14 19:49:17,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-10-14 19:49:17,240 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 110 flow. Second operand 5 states and 80 transitions. [2024-10-14 19:49:17,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 164 flow [2024-10-14 19:49:17,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:49:17,242 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 116 flow [2024-10-14 19:49:17,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-10-14 19:49:17,243 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-10-14 19:49:17,243 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 116 flow [2024-10-14 19:49:17,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:17,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:17,243 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1] [2024-10-14 19:49:17,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-14 19:49:17,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:17,449 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:17,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1168223953, now seen corresponding path program 2 times [2024-10-14 19:49:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615120392] [2024-10-14 19:49:17,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:17,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:17,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:17,452 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:17,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:49:17,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:49:17,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:17,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:49:17,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:17,556 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 [2024-10-14 19:49:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:49:17,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:49:18,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:18,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615120392] [2024-10-14 19:49:18,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615120392] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:18,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:18,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:49:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725176344] [2024-10-14 19:49:18,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:18,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:49:18,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:18,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:49:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:49:18,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:18,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 116 flow. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:18,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:18,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:18,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:18,680 INFO L124 PetriNetUnfolderBase]: 127/258 cut-off events. [2024-10-14 19:49:18,680 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 19:49:18,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 258 events. 127/258 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 897 event pairs, 100 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 488. Up to 221 conditions per place. [2024-10-14 19:49:18,682 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 22 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-10-14 19:49:18,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 32 transitions, 156 flow [2024-10-14 19:49:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:49:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:49:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-10-14 19:49:18,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36936936936936937 [2024-10-14 19:49:18,684 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 116 flow. Second operand 6 states and 82 transitions. [2024-10-14 19:49:18,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 32 transitions, 156 flow [2024-10-14 19:49:18,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 140 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-14 19:49:18,686 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 88 flow [2024-10-14 19:49:18,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-10-14 19:49:18,687 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-10-14 19:49:18,687 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 88 flow [2024-10-14 19:49:18,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:18,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:18,688 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:18,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-14 19:49:18,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:18,889 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:18,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash -657628320, now seen corresponding path program 2 times [2024-10-14 19:49:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:18,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232529701] [2024-10-14 19:49:18,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:18,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:18,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:18,894 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:18,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:49:18,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:49:18,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:18,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:49:18,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:18,971 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 [2024-10-14 19:49:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:19,075 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:19,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:19,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232529701] [2024-10-14 19:49:19,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232529701] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:19,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:19,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:49:19,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923880882] [2024-10-14 19:49:19,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:19,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:49:19,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:49:19,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:49:19,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:19,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:19,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:19,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:19,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:19,294 INFO L124 PetriNetUnfolderBase]: 253/485 cut-off events. [2024-10-14 19:49:19,294 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:49:19,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 485 events. 253/485 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2078 event pairs, 118 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 927. Up to 254 conditions per place. [2024-10-14 19:49:19,297 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 39 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-10-14 19:49:19,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 211 flow [2024-10-14 19:49:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-10-14 19:49:19,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-10-14 19:49:19,299 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 88 flow. Second operand 5 states and 87 transitions. [2024-10-14 19:49:19,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 211 flow [2024-10-14 19:49:19,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 199 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-14 19:49:19,300 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 92 flow [2024-10-14 19:49:19,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-10-14 19:49:19,301 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-10-14 19:49:19,302 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 92 flow [2024-10-14 19:49:19,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:19,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:19,302 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:19,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-14 19:49:19,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:19,503 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:19,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash -657628321, now seen corresponding path program 1 times [2024-10-14 19:49:19,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:19,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890039460] [2024-10-14 19:49:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:19,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:19,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:19,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:19,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-14 19:49:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:19,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:19,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:19,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:49:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:19,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:19,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:19,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890039460] [2024-10-14 19:49:19,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890039460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:19,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:19,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:49:19,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147359321] [2024-10-14 19:49:19,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:19,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:49:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:19,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:49:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:49:19,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-14 19:49:19,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:19,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:19,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-14 19:49:19,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:19,764 INFO L124 PetriNetUnfolderBase]: 233/443 cut-off events. [2024-10-14 19:49:19,764 INFO L125 PetriNetUnfolderBase]: For 60/62 co-relation queries the response was YES. [2024-10-14 19:49:19,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 443 events. 233/443 cut-off events. For 60/62 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1723 event pairs, 195 based on Foata normal form. 28/419 useless extension candidates. Maximal degree in co-relation 338. Up to 404 conditions per place. [2024-10-14 19:49:19,767 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 24 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-10-14 19:49:19,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 140 flow [2024-10-14 19:49:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:49:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:49:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-10-14 19:49:19,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3581081081081081 [2024-10-14 19:49:19,768 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 92 flow. Second operand 4 states and 53 transitions. [2024-10-14 19:49:19,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 140 flow [2024-10-14 19:49:19,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:49:19,770 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 86 flow [2024-10-14 19:49:19,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-10-14 19:49:19,770 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-10-14 19:49:19,771 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 86 flow [2024-10-14 19:49:19,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:19,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:19,771 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:19,776 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 [2024-10-14 19:49:19,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:19,972 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:19,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1461806733, now seen corresponding path program 1 times [2024-10-14 19:49:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790505735] [2024-10-14 19:49:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:19,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:19,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:19,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:19,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:49:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:20,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:49:20,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:20,066 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 [2024-10-14 19:49:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:20,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:20,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:20,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790505735] [2024-10-14 19:49:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790505735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:20,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:49:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023366635] [2024-10-14 19:49:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:20,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:49:20,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:49:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:49:20,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:20,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:20,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:20,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:20,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:20,409 INFO L124 PetriNetUnfolderBase]: 443/779 cut-off events. [2024-10-14 19:49:20,409 INFO L125 PetriNetUnfolderBase]: For 88/106 co-relation queries the response was YES. [2024-10-14 19:49:20,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 779 events. 443/779 cut-off events. For 88/106 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3160 event pairs, 228 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 1628. Up to 463 conditions per place. [2024-10-14 19:49:20,414 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 39 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-14 19:49:20,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 212 flow [2024-10-14 19:49:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-10-14 19:49:20,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-10-14 19:49:20,416 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 86 flow. Second operand 5 states and 85 transitions. [2024-10-14 19:49:20,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 212 flow [2024-10-14 19:49:20,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:49:20,418 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 99 flow [2024-10-14 19:49:20,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-10-14 19:49:20,418 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-10-14 19:49:20,419 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 99 flow [2024-10-14 19:49:20,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:20,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:20,419 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:20,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-14 19:49:20,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:20,620 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:20,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2058777662, now seen corresponding path program 1 times [2024-10-14 19:49:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:20,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393164213] [2024-10-14 19:49:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:20,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:20,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:20,624 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:20,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:49:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:20,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:49:20,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:20,733 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 [2024-10-14 19:49:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:20,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:21,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:21,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393164213] [2024-10-14 19:49:21,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393164213] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:21,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:21,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:49:21,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511812427] [2024-10-14 19:49:21,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:21,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:49:21,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:21,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:49:21,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:49:21,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:21,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 99 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:21,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:21,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:21,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:22,015 INFO L124 PetriNetUnfolderBase]: 815/1423 cut-off events. [2024-10-14 19:49:22,016 INFO L125 PetriNetUnfolderBase]: For 251/293 co-relation queries the response was YES. [2024-10-14 19:49:22,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3213 conditions, 1423 events. 815/1423 cut-off events. For 251/293 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6644 event pairs, 218 based on Foata normal form. 0/1207 useless extension candidates. Maximal degree in co-relation 3181. Up to 441 conditions per place. [2024-10-14 19:49:22,023 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 75 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2024-10-14 19:49:22,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 83 transitions, 404 flow [2024-10-14 19:49:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:49:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:49:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-10-14 19:49:22,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-10-14 19:49:22,025 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 99 flow. Second operand 7 states and 140 transitions. [2024-10-14 19:49:22,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 83 transitions, 404 flow [2024-10-14 19:49:22,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 83 transitions, 392 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:49:22,027 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 123 flow [2024-10-14 19:49:22,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-10-14 19:49:22,028 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2024-10-14 19:49:22,028 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 123 flow [2024-10-14 19:49:22,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:22,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:22,029 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:22,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:22,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:22,230 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:22,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2010293320, now seen corresponding path program 1 times [2024-10-14 19:49:22,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:22,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868762912] [2024-10-14 19:49:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:22,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:22,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:22,232 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:22,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-14 19:49:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:22,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:49:22,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:22,340 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 [2024-10-14 19:49:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:22,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:22,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:22,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868762912] [2024-10-14 19:49:22,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868762912] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:22,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:22,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:49:22,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632923033] [2024-10-14 19:49:22,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:22,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:49:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:49:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:49:22,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:22,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 123 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:22,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:22,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:22,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:23,594 INFO L124 PetriNetUnfolderBase]: 1517/2633 cut-off events. [2024-10-14 19:49:23,595 INFO L125 PetriNetUnfolderBase]: For 1054/1092 co-relation queries the response was YES. [2024-10-14 19:49:23,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6130 conditions, 2633 events. 1517/2633 cut-off events. For 1054/1092 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13142 event pairs, 450 based on Foata normal form. 0/2219 useless extension candidates. Maximal degree in co-relation 6096. Up to 885 conditions per place. [2024-10-14 19:49:23,609 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 77 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-10-14 19:49:23,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 85 transitions, 477 flow [2024-10-14 19:49:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:49:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:49:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-10-14 19:49:23,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-10-14 19:49:23,611 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 123 flow. Second operand 7 states and 134 transitions. [2024-10-14 19:49:23,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 85 transitions, 477 flow [2024-10-14 19:49:23,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 85 transitions, 450 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-14 19:49:23,615 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 144 flow [2024-10-14 19:49:23,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2024-10-14 19:49:23,617 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2024-10-14 19:49:23,617 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 144 flow [2024-10-14 19:49:23,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:23,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:23,618 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-10-14 19:49:23,623 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 (12)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:23,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:23,819 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:23,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1653196546, now seen corresponding path program 2 times [2024-10-14 19:49:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:23,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861509665] [2024-10-14 19:49:23,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:23,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:23,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:23,821 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:23,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-14 19:49:23,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:49:23,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:23,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:49:23,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:23,949 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 [2024-10-14 19:49:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:24,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:24,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:24,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861509665] [2024-10-14 19:49:24,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861509665] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:24,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:24,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-10-14 19:49:24,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791960653] [2024-10-14 19:49:24,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:24,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:49:24,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:49:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:49:24,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:24,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:24,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:24,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:24,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:25,705 INFO L124 PetriNetUnfolderBase]: 1341/2363 cut-off events. [2024-10-14 19:49:25,706 INFO L125 PetriNetUnfolderBase]: For 1126/1166 co-relation queries the response was YES. [2024-10-14 19:49:25,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5592 conditions, 2363 events. 1341/2363 cut-off events. For 1126/1166 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 12239 event pairs, 20 based on Foata normal form. 0/2055 useless extension candidates. Maximal degree in co-relation 5555. Up to 595 conditions per place. [2024-10-14 19:49:25,718 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 92 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-10-14 19:49:25,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 100 transitions, 568 flow [2024-10-14 19:49:25,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:49:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:49:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-10-14 19:49:25,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-10-14 19:49:25,720 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 144 flow. Second operand 8 states and 154 transitions. [2024-10-14 19:49:25,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 100 transitions, 568 flow [2024-10-14 19:49:25,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 526 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-10-14 19:49:25,726 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 127 flow [2024-10-14 19:49:25,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=127, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-10-14 19:49:25,727 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2024-10-14 19:49:25,728 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 127 flow [2024-10-14 19:49:25,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:25,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:25,728 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:25,734 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 [2024-10-14 19:49:25,932 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 [2024-10-14 19:49:25,933 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:25,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:25,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1897614679, now seen corresponding path program 1 times [2024-10-14 19:49:25,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:25,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547305343] [2024-10-14 19:49:25,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:25,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:25,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:25,936 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) [2024-10-14 19:49:25,936 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 [2024-10-14 19:49:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:26,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:49:26,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:26,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:26,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547305343] [2024-10-14 19:49:26,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547305343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:26,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:26,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:49:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039137843] [2024-10-14 19:49:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:26,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:49:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:49:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:49:26,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:26,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:26,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:26,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:26,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:26,734 INFO L124 PetriNetUnfolderBase]: 1343/2417 cut-off events. [2024-10-14 19:49:26,734 INFO L125 PetriNetUnfolderBase]: For 1125/1125 co-relation queries the response was YES. [2024-10-14 19:49:26,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5782 conditions, 2417 events. 1343/2417 cut-off events. For 1125/1125 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12533 event pairs, 987 based on Foata normal form. 3/2244 useless extension candidates. Maximal degree in co-relation 5747. Up to 1808 conditions per place. [2024-10-14 19:49:26,747 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 52 selfloop transitions, 3 changer transitions 7/64 dead transitions. [2024-10-14 19:49:26,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 354 flow [2024-10-14 19:49:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-14 19:49:26,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5621621621621622 [2024-10-14 19:49:26,749 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 127 flow. Second operand 5 states and 104 transitions. [2024-10-14 19:49:26,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 354 flow [2024-10-14 19:49:26,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 329 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:49:26,752 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 136 flow [2024-10-14 19:49:26,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2024-10-14 19:49:26,753 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2024-10-14 19:49:26,753 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 136 flow [2024-10-14 19:49:26,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:26,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:26,754 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:26,759 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 (14)] Ended with exit code 0 [2024-10-14 19:49:26,954 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 [2024-10-14 19:49:26,954 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:26,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:26,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1210571983, now seen corresponding path program 2 times [2024-10-14 19:49:26,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:26,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675991078] [2024-10-14 19:49:26,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:26,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:26,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:26,960 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) [2024-10-14 19:49:26,961 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 [2024-10-14 19:49:27,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:49:27,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:27,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:49:27,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:27,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:27,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:27,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675991078] [2024-10-14 19:49:27,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675991078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:27,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:27,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:49:27,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128922946] [2024-10-14 19:49:27,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:27,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:49:27,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:27,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:49:27,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:49:27,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:27,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:27,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:27,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:27,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:27,776 INFO L124 PetriNetUnfolderBase]: 1344/2410 cut-off events. [2024-10-14 19:49:27,776 INFO L125 PetriNetUnfolderBase]: For 1587/1596 co-relation queries the response was YES. [2024-10-14 19:49:27,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6161 conditions, 2410 events. 1344/2410 cut-off events. For 1587/1596 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12970 event pairs, 966 based on Foata normal form. 1/2235 useless extension candidates. Maximal degree in co-relation 6125. Up to 1751 conditions per place. [2024-10-14 19:49:27,789 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 58 selfloop transitions, 3 changer transitions 9/72 dead transitions. [2024-10-14 19:49:27,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 430 flow [2024-10-14 19:49:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:27,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-10-14 19:49:27,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5783783783783784 [2024-10-14 19:49:27,792 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 136 flow. Second operand 5 states and 107 transitions. [2024-10-14 19:49:27,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 430 flow [2024-10-14 19:49:27,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 410 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-14 19:49:27,798 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 148 flow [2024-10-14 19:49:27,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2024-10-14 19:49:27,799 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-10-14 19:49:27,799 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 148 flow [2024-10-14 19:49:27,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:27,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:27,799 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:27,806 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 [2024-10-14 19:49:28,003 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 [2024-10-14 19:49:28,003 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:28,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1475320693, now seen corresponding path program 3 times [2024-10-14 19:49:28,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:28,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213975593] [2024-10-14 19:49:28,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:49:28,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:28,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:28,006 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) [2024-10-14 19:49:28,006 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 [2024-10-14 19:49:28,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 19:49:28,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:28,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:49:28,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:28,430 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:28,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:28,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213975593] [2024-10-14 19:49:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213975593] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:28,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:28,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:49:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666163542] [2024-10-14 19:49:28,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:28,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:49:28,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:28,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:49:28,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:49:28,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:28,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:28,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:28,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:28,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:28,933 INFO L124 PetriNetUnfolderBase]: 1414/2534 cut-off events. [2024-10-14 19:49:28,933 INFO L125 PetriNetUnfolderBase]: For 1807/1807 co-relation queries the response was YES. [2024-10-14 19:49:28,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6895 conditions, 2534 events. 1414/2534 cut-off events. For 1807/1807 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 13257 event pairs, 996 based on Foata normal form. 3/2537 useless extension candidates. Maximal degree in co-relation 6857. Up to 1819 conditions per place. [2024-10-14 19:49:28,945 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 55 selfloop transitions, 7 changer transitions 5/69 dead transitions. [2024-10-14 19:49:28,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 416 flow [2024-10-14 19:49:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-10-14 19:49:28,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5891891891891892 [2024-10-14 19:49:28,946 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 148 flow. Second operand 5 states and 109 transitions. [2024-10-14 19:49:28,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 416 flow [2024-10-14 19:49:28,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 394 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-14 19:49:28,950 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 206 flow [2024-10-14 19:49:28,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2024-10-14 19:49:28,951 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-10-14 19:49:28,951 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 206 flow [2024-10-14 19:49:28,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:28,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:28,951 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:28,956 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 [2024-10-14 19:49:29,152 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 [2024-10-14 19:49:29,152 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:29,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1520473101, now seen corresponding path program 4 times [2024-10-14 19:49:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:29,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711288223] [2024-10-14 19:49:29,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:49:29,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:29,156 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) [2024-10-14 19:49:29,158 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 [2024-10-14 19:49:29,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:49:29,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:29,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:49:29,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:29,599 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:29,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:29,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711288223] [2024-10-14 19:49:29,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711288223] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:29,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:29,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:49:29,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559722370] [2024-10-14 19:49:29,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:29,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:49:29,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:49:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:49:29,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:29,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:29,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:29,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:29,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:30,091 INFO L124 PetriNetUnfolderBase]: 1412/2519 cut-off events. [2024-10-14 19:49:30,091 INFO L125 PetriNetUnfolderBase]: For 2717/2726 co-relation queries the response was YES. [2024-10-14 19:49:30,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7073 conditions, 2519 events. 1412/2519 cut-off events. For 2717/2726 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13385 event pairs, 968 based on Foata normal form. 3/2335 useless extension candidates. Maximal degree in co-relation 7033. Up to 1761 conditions per place. [2024-10-14 19:49:30,105 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 58 selfloop transitions, 10 changer transitions 5/75 dead transitions. [2024-10-14 19:49:30,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 498 flow [2024-10-14 19:49:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-10-14 19:49:30,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-14 19:49:30,106 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 206 flow. Second operand 5 states and 111 transitions. [2024-10-14 19:49:30,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 498 flow [2024-10-14 19:49:30,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:49:30,113 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 291 flow [2024-10-14 19:49:30,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2024-10-14 19:49:30,114 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-10-14 19:49:30,115 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 291 flow [2024-10-14 19:49:30,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:30,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:30,115 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:30,121 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 [2024-10-14 19:49:30,316 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 [2024-10-14 19:49:30,316 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:30,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2117202392, now seen corresponding path program 2 times [2024-10-14 19:49:30,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:30,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137226321] [2024-10-14 19:49:30,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:30,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:30,318 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) [2024-10-14 19:49:30,319 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 [2024-10-14 19:49:30,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:49:30,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:30,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:49:30,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:30,436 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 [2024-10-14 19:49:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:30,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:30,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137226321] [2024-10-14 19:49:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137226321] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:30,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:30,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-10-14 19:49:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397895362] [2024-10-14 19:49:30,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:30,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:49:30,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:49:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:49:31,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 19:49:31,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 291 flow. Second operand has 13 states, 13 states have (on average 12.076923076923077) internal successors, (157), 13 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:31,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:31,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 19:49:31,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:31,985 INFO L124 PetriNetUnfolderBase]: 1306/2336 cut-off events. [2024-10-14 19:49:31,985 INFO L125 PetriNetUnfolderBase]: For 3989/3989 co-relation queries the response was YES. [2024-10-14 19:49:31,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 2336 events. 1306/2336 cut-off events. For 3989/3989 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 11795 event pairs, 109 based on Foata normal form. 0/2193 useless extension candidates. Maximal degree in co-relation 6868. Up to 653 conditions per place. [2024-10-14 19:49:31,994 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 89 selfloop transitions, 9 changer transitions 1/100 dead transitions. [2024-10-14 19:49:31,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 739 flow [2024-10-14 19:49:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:49:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:49:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-10-14 19:49:31,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-10-14 19:49:31,996 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 291 flow. Second operand 8 states and 147 transitions. [2024-10-14 19:49:31,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 739 flow [2024-10-14 19:49:32,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 703 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-14 19:49:32,000 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 268 flow [2024-10-14 19:49:32,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=268, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2024-10-14 19:49:32,001 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2024-10-14 19:49:32,001 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 268 flow [2024-10-14 19:49:32,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.076923076923077) internal successors, (157), 13 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:32,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:32,002 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:32,007 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 (18)] Ended with exit code 0 [2024-10-14 19:49:32,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:32,202 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:32,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash -868961125, now seen corresponding path program 1 times [2024-10-14 19:49:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:32,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63857505] [2024-10-14 19:49:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:32,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:32,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:32,204 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:32,206 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 (19)] Waiting until timeout for monitored process [2024-10-14 19:49:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:32,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:32,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:32,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:32,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:32,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63857505] [2024-10-14 19:49:32,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63857505] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 19:49:32,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 19:49:32,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-14 19:49:32,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050487702] [2024-10-14 19:49:32,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:32,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:49:32,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:32,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:49:32,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:49:32,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:32,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:32,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:32,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:32,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:32,828 INFO L124 PetriNetUnfolderBase]: 1444/2573 cut-off events. [2024-10-14 19:49:32,828 INFO L125 PetriNetUnfolderBase]: For 3413/3413 co-relation queries the response was YES. [2024-10-14 19:49:32,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7572 conditions, 2573 events. 1444/2573 cut-off events. For 3413/3413 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 13681 event pairs, 77 based on Foata normal form. 33/2606 useless extension candidates. Maximal degree in co-relation 7530. Up to 1419 conditions per place. [2024-10-14 19:49:32,842 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 69 selfloop transitions, 23 changer transitions 4/97 dead transitions. [2024-10-14 19:49:32,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 751 flow [2024-10-14 19:49:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:49:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:49:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-10-14 19:49:32,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528957528957529 [2024-10-14 19:49:32,845 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 268 flow. Second operand 7 states and 137 transitions. [2024-10-14 19:49:32,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 751 flow [2024-10-14 19:49:32,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 718 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:49:32,852 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 462 flow [2024-10-14 19:49:32,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=462, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-14 19:49:32,852 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2024-10-14 19:49:32,853 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 462 flow [2024-10-14 19:49:32,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:32,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:32,853 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:32,859 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 (19)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:33,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:33,054 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:33,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash -871274672, now seen corresponding path program 1 times [2024-10-14 19:49:33,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:33,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289827626] [2024-10-14 19:49:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:33,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:33,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:33,056 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:33,058 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 (20)] Waiting until timeout for monitored process [2024-10-14 19:49:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:33,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:33,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:33,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:33,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289827626] [2024-10-14 19:49:33,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289827626] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 19:49:33,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 19:49:33,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-14 19:49:33,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337646503] [2024-10-14 19:49:33,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:33,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:49:33,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:49:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:49:33,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:33,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:33,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:33,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:33,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:33,721 INFO L124 PetriNetUnfolderBase]: 1573/2792 cut-off events. [2024-10-14 19:49:33,721 INFO L125 PetriNetUnfolderBase]: For 6462/6462 co-relation queries the response was YES. [2024-10-14 19:49:33,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9181 conditions, 2792 events. 1573/2792 cut-off events. For 6462/6462 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 14704 event pairs, 217 based on Foata normal form. 30/2822 useless extension candidates. Maximal degree in co-relation 9137. Up to 1417 conditions per place. [2024-10-14 19:49:33,735 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 77 selfloop transitions, 35 changer transitions 4/117 dead transitions. [2024-10-14 19:49:33,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 1064 flow [2024-10-14 19:49:33,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:49:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:49:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-10-14 19:49:33,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-10-14 19:49:33,738 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 462 flow. Second operand 7 states and 134 transitions. [2024-10-14 19:49:33,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 1064 flow [2024-10-14 19:49:33,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 117 transitions, 1028 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-10-14 19:49:33,752 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 751 flow [2024-10-14 19:49:33,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=751, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-10-14 19:49:33,752 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2024-10-14 19:49:33,753 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 751 flow [2024-10-14 19:49:33,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:33,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:33,753 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:33,758 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 (20)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:33,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:33,954 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:33,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash 15153898, now seen corresponding path program 2 times [2024-10-14 19:49:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11530643] [2024-10-14 19:49:33,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:33,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:33,958 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:33,961 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 (21)] Waiting until timeout for monitored process [2024-10-14 19:49:34,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:49:34,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:34,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:34,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:34,177 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:34,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11530643] [2024-10-14 19:49:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11530643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:34,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:34,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:49:34,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267042385] [2024-10-14 19:49:34,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:34,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:49:34,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:34,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:49:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:49:34,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:34,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 751 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:34,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:34,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:34,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:34,759 INFO L124 PetriNetUnfolderBase]: 1575/2809 cut-off events. [2024-10-14 19:49:34,760 INFO L125 PetriNetUnfolderBase]: For 10361/10361 co-relation queries the response was YES. [2024-10-14 19:49:34,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10130 conditions, 2809 events. 1575/2809 cut-off events. For 10361/10361 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 15332 event pairs, 963 based on Foata normal form. 6/2815 useless extension candidates. Maximal degree in co-relation 10081. Up to 1877 conditions per place. [2024-10-14 19:49:34,774 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 93 selfloop transitions, 18 changer transitions 1/113 dead transitions. [2024-10-14 19:49:34,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 113 transitions, 1170 flow [2024-10-14 19:49:34,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:34,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-10-14 19:49:34,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-10-14 19:49:34,776 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 751 flow. Second operand 5 states and 110 transitions. [2024-10-14 19:49:34,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 113 transitions, 1170 flow [2024-10-14 19:49:34,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 1130 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-10-14 19:49:34,800 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 793 flow [2024-10-14 19:49:34,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=793, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2024-10-14 19:49:34,801 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2024-10-14 19:49:34,801 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 793 flow [2024-10-14 19:49:34,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:34,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:34,801 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:34,808 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 (21)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:35,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:35,002 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:35,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:35,003 INFO L85 PathProgramCache]: Analyzing trace with hash 564211948, now seen corresponding path program 3 times [2024-10-14 19:49:35,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:35,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865779715] [2024-10-14 19:49:35,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:49:35,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:35,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:35,004 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:35,005 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 (22)] Waiting until timeout for monitored process [2024-10-14 19:49:35,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:49:35,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:35,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:35,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:35,208 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:35,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865779715] [2024-10-14 19:49:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865779715] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:35,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:49:35,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449646296] [2024-10-14 19:49:35,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:35,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:49:35,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:35,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:49:35,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:49:35,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:35,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 793 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:35,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:35,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:35,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:35,698 INFO L124 PetriNetUnfolderBase]: 1695/3001 cut-off events. [2024-10-14 19:49:35,698 INFO L125 PetriNetUnfolderBase]: For 11247/11247 co-relation queries the response was YES. [2024-10-14 19:49:35,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10845 conditions, 3001 events. 1695/3001 cut-off events. For 11247/11247 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16535 event pairs, 967 based on Foata normal form. 30/3031 useless extension candidates. Maximal degree in co-relation 10793. Up to 1883 conditions per place. [2024-10-14 19:49:35,719 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 86 selfloop transitions, 35 changer transitions 8/130 dead transitions. [2024-10-14 19:49:35,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 1328 flow [2024-10-14 19:49:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:49:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:49:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-10-14 19:49:35,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2024-10-14 19:49:35,724 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 793 flow. Second operand 6 states and 135 transitions. [2024-10-14 19:49:35,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 1328 flow [2024-10-14 19:49:35,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 130 transitions, 1293 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 19:49:35,754 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 1041 flow [2024-10-14 19:49:35,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1041, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-10-14 19:49:35,755 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2024-10-14 19:49:35,755 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 1041 flow [2024-10-14 19:49:35,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:35,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:35,756 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:35,762 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 (22)] Ended with exit code 0 [2024-10-14 19:49:35,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:35,956 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:35,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1092232231, now seen corresponding path program 2 times [2024-10-14 19:49:35,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:35,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64854941] [2024-10-14 19:49:35,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:35,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:35,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:35,959 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:35,960 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 (23)] Waiting until timeout for monitored process [2024-10-14 19:49:36,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:49:36,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:36,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:36,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:36,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:36,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:36,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64854941] [2024-10-14 19:49:36,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64854941] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:49:36,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:49:36,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-14 19:49:36,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180052626] [2024-10-14 19:49:36,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:49:36,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 19:49:36,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:36,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 19:49:36,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:49:36,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:36,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 1041 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:36,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:36,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:36,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:36,843 INFO L124 PetriNetUnfolderBase]: 1941/3422 cut-off events. [2024-10-14 19:49:36,843 INFO L125 PetriNetUnfolderBase]: For 14830/14830 co-relation queries the response was YES. [2024-10-14 19:49:36,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12847 conditions, 3422 events. 1941/3422 cut-off events. For 14830/14830 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 19140 event pairs, 278 based on Foata normal form. 33/3455 useless extension candidates. Maximal degree in co-relation 12791. Up to 1167 conditions per place. [2024-10-14 19:49:36,861 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 85 selfloop transitions, 81 changer transitions 10/177 dead transitions. [2024-10-14 19:49:36,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 177 transitions, 1864 flow [2024-10-14 19:49:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:49:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:49:36,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-10-14 19:49:36,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5356265356265356 [2024-10-14 19:49:36,863 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 1041 flow. Second operand 11 states and 218 transitions. [2024-10-14 19:49:36,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 177 transitions, 1864 flow [2024-10-14 19:49:36,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 177 transitions, 1819 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 19:49:36,908 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 1548 flow [2024-10-14 19:49:36,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1548, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2024-10-14 19:49:36,909 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2024-10-14 19:49:36,909 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 1548 flow [2024-10-14 19:49:36,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:36,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:36,909 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:36,915 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 (23)] Ended with exit code 0 [2024-10-14 19:49:37,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:37,110 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:37,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:37,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1420375102, now seen corresponding path program 4 times [2024-10-14 19:49:37,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:37,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831284357] [2024-10-14 19:49:37,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:49:37,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:37,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:37,113 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:37,114 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 (24)] Waiting until timeout for monitored process [2024-10-14 19:49:37,214 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:49:37,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:37,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:37,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:37,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:37,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:37,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831284357] [2024-10-14 19:49:37,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831284357] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:37,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:37,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:49:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381338574] [2024-10-14 19:49:37,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:37,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:49:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:37,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:49:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:49:37,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:37,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 1548 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:37,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:37,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:37,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:37,850 INFO L124 PetriNetUnfolderBase]: 1936/3426 cut-off events. [2024-10-14 19:49:37,850 INFO L125 PetriNetUnfolderBase]: For 19530/19530 co-relation queries the response was YES. [2024-10-14 19:49:37,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14105 conditions, 3426 events. 1936/3426 cut-off events. For 19530/19530 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 19078 event pairs, 1129 based on Foata normal form. 6/3432 useless extension candidates. Maximal degree in co-relation 14044. Up to 2120 conditions per place. [2024-10-14 19:49:37,866 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 123 selfloop transitions, 22 changer transitions 1/147 dead transitions. [2024-10-14 19:49:37,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 147 transitions, 2009 flow [2024-10-14 19:49:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-14 19:49:37,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5837837837837838 [2024-10-14 19:49:37,867 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 1548 flow. Second operand 5 states and 108 transitions. [2024-10-14 19:49:37,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 147 transitions, 2009 flow [2024-10-14 19:49:37,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1870 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-10-14 19:49:37,945 INFO L231 Difference]: Finished difference. Result has 102 places, 119 transitions, 1511 flow [2024-10-14 19:49:37,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1511, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2024-10-14 19:49:37,946 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2024-10-14 19:49:37,946 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 1511 flow [2024-10-14 19:49:37,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:37,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:37,947 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:37,952 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 (24)] Ended with exit code 0 [2024-10-14 19:49:38,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:38,148 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:38,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:38,148 INFO L85 PathProgramCache]: Analyzing trace with hash 954085046, now seen corresponding path program 5 times [2024-10-14 19:49:38,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:38,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320764213] [2024-10-14 19:49:38,148 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:49:38,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:38,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:38,150 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:38,150 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 (25)] Waiting until timeout for monitored process [2024-10-14 19:49:38,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-14 19:49:38,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:38,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:38,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:38,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:38,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320764213] [2024-10-14 19:49:38,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320764213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:38,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:38,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:49:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417072052] [2024-10-14 19:49:38,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:38,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:49:38,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:38,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:49:38,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:49:38,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:38,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 1511 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:38,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:38,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:38,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:38,825 INFO L124 PetriNetUnfolderBase]: 1920/3373 cut-off events. [2024-10-14 19:49:38,826 INFO L125 PetriNetUnfolderBase]: For 16699/16699 co-relation queries the response was YES. [2024-10-14 19:49:38,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13394 conditions, 3373 events. 1920/3373 cut-off events. For 16699/16699 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 18528 event pairs, 995 based on Foata normal form. 30/3403 useless extension candidates. Maximal degree in co-relation 13335. Up to 1837 conditions per place. [2024-10-14 19:49:38,841 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 121 selfloop transitions, 36 changer transitions 9/167 dead transitions. [2024-10-14 19:49:38,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 167 transitions, 2156 flow [2024-10-14 19:49:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:49:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:49:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-10-14 19:49:38,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-14 19:49:38,843 INFO L175 Difference]: Start difference. First operand has 102 places, 119 transitions, 1511 flow. Second operand 7 states and 148 transitions. [2024-10-14 19:49:38,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 167 transitions, 2156 flow [2024-10-14 19:49:38,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 2116 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 19:49:38,896 INFO L231 Difference]: Finished difference. Result has 109 places, 129 transitions, 1741 flow [2024-10-14 19:49:38,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1741, PETRI_PLACES=109, PETRI_TRANSITIONS=129} [2024-10-14 19:49:38,896 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2024-10-14 19:49:38,896 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 129 transitions, 1741 flow [2024-10-14 19:49:38,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:38,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:38,897 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:38,902 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 (25)] Ended with exit code 0 [2024-10-14 19:49:39,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:39,097 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:39,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:39,098 INFO L85 PathProgramCache]: Analyzing trace with hash -35052973, now seen corresponding path program 3 times [2024-10-14 19:49:39,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:39,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226615664] [2024-10-14 19:49:39,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:49:39,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:39,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:39,100 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:39,103 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 (26)] Waiting until timeout for monitored process [2024-10-14 19:49:39,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:49:39,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:39,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:49:39,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:39,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:39,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:39,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226615664] [2024-10-14 19:49:39,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226615664] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 19:49:39,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 19:49:39,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-10-14 19:49:39,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734237571] [2024-10-14 19:49:39,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:39,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:49:39,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:39,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:49:39,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:49:39,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-10-14 19:49:39,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 129 transitions, 1741 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:39,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:39,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-10-14 19:49:39,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:49:39,773 INFO L124 PetriNetUnfolderBase]: 1858/3251 cut-off events. [2024-10-14 19:49:39,773 INFO L125 PetriNetUnfolderBase]: For 16537/16537 co-relation queries the response was YES. [2024-10-14 19:49:39,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12983 conditions, 3251 events. 1858/3251 cut-off events. For 16537/16537 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17628 event pairs, 874 based on Foata normal form. 33/3284 useless extension candidates. Maximal degree in co-relation 12921. Up to 1809 conditions per place. [2024-10-14 19:49:39,788 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 87 selfloop transitions, 53 changer transitions 6/147 dead transitions. [2024-10-14 19:49:39,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 147 transitions, 2052 flow [2024-10-14 19:49:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:49:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:49:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-10-14 19:49:39,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-10-14 19:49:39,789 INFO L175 Difference]: Start difference. First operand has 109 places, 129 transitions, 1741 flow. Second operand 5 states and 105 transitions. [2024-10-14 19:49:39,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 147 transitions, 2052 flow [2024-10-14 19:49:39,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 147 transitions, 1928 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-10-14 19:49:39,830 INFO L231 Difference]: Finished difference. Result has 102 places, 126 transitions, 1672 flow [2024-10-14 19:49:39,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1672, PETRI_PLACES=102, PETRI_TRANSITIONS=126} [2024-10-14 19:49:39,831 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2024-10-14 19:49:39,831 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 126 transitions, 1672 flow [2024-10-14 19:49:39,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:39,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:39,832 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:39,837 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 (26)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:40,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:40,033 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-14 19:49:40,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1588732548, now seen corresponding path program 1 times [2024-10-14 19:49:40,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:40,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300934726] [2024-10-14 19:49:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:49:40,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:40,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:40,035 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:40,037 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 (27)] Waiting until timeout for monitored process [2024-10-14 19:49:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:49:40,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 19:49:40,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:40,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 19:49:40,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 425 treesize of output 161 [2024-10-14 19:49:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:49:41,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:49:44,699 INFO L349 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2024-10-14 19:49:44,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 590 treesize of output 284 [2024-10-14 19:50:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 19:50:18,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:50:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300934726] [2024-10-14 19:50:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300934726] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:18,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:50:18,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-10-14 19:50:18,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282013222] [2024-10-14 19:50:18,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:18,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:50:18,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:50:18,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:50:18,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=190, Unknown=4, NotChecked=0, Total=240 [2024-10-14 19:50:24,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:50:28,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]