./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:01:44,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:01:44,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:01:44,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:01:44,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:01:44,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:01:44,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:01:44,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:01:44,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:01:44,514 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:01:44,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:01:44,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:01:44,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:01:44,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:01:44,519 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:01:44,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:01:44,519 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:01:44,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:01:44,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:01:44,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:01:44,520 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:01:44,521 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:01:44,521 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:01:44,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:01:44,522 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:01:44,522 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:01:44,522 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:01:44,522 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:01:44,522 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:01:44,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:01:44,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:01:44,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:01:44,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:01:44,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:01:44,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:01:44,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:01:44,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:01:44,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:01:44,524 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:01:44,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:01:44,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:01:44,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:01:44,526 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2024-10-11 20:01:44,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:01:44,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:01:44,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:01:44,760 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:01:44,760 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:01:44,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-10-11 20:01:46,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:01:46,292 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:01:46,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-10-11 20:01:46,300 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d252e5c46/c0988a658dcf45c8989afba839f6b55a/FLAGe8dd1402a [2024-10-11 20:01:46,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d252e5c46/c0988a658dcf45c8989afba839f6b55a [2024-10-11 20:01:46,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:01:46,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:01:46,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:46,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:01:46,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:01:46,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:46" (1/1) ... [2024-10-11 20:01:46,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4966945a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:46, skipping insertion in model container [2024-10-11 20:01:46,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:46" (1/1) ... [2024-10-11 20:01:46,352 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:01:46,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:46,541 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 20:01:46,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72854b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:46, skipping insertion in model container [2024-10-11 20:01:46,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:46,543 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 20:01:46,544 INFO L158 Benchmark]: Toolchain (without parser) took 226.85ms. Allocated memory is still 146.8MB. Free memory was 75.6MB in the beginning and 64.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:01:46,545 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 146.8MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:01:46,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.53ms. Allocated memory is still 146.8MB. Free memory was 75.4MB in the beginning and 64.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:01:46,547 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 146.8MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.53ms. Allocated memory is still 146.8MB. Free memory was 75.4MB in the beginning and 64.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 95]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:01:48,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:01:48,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 20:01:48,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:01:48,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:01:48,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:01:48,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:01:48,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:01:48,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:01:48,379 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:01:48,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:01:48,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:01:48,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:01:48,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:01:48,381 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:01:48,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:01:48,381 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:01:48,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:01:48,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:01:48,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:01:48,382 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:01:48,383 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:01:48,383 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:01:48,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:01:48,383 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:01:48,383 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 20:01:48,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:01:48,384 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 20:01:48,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:01:48,384 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:01:48,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:01:48,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:01:48,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:01:48,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:01:48,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:01:48,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:01:48,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:01:48,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:01:48,395 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 20:01:48,395 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 20:01:48,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:01:48,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:01:48,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:01:48,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:01:48,396 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 20:01:48,396 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2024-10-11 20:01:48,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:01:48,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:01:48,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:01:48,660 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:01:48,661 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:01:48,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-10-11 20:01:50,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:01:50,287 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:01:50,288 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-10-11 20:01:50,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dfe9412ec/61d8f4d062fb46199155bc686c15b466/FLAG3915a5a31 [2024-10-11 20:01:50,305 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dfe9412ec/61d8f4d062fb46199155bc686c15b466 [2024-10-11 20:01:50,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:01:50,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:01:50,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:50,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:01:50,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:01:50,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dffaeb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50, skipping insertion in model container [2024-10-11 20:01:50,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:01:50,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:50,549 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 20:01:50,554 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:01:50,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:50,577 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:01:50,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:50,617 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:01:50,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50 WrapperNode [2024-10-11 20:01:50,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:50,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:01:50,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:01:50,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:01:50,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,657 INFO L138 Inliner]: procedures = 25, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 124 [2024-10-11 20:01:50,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:01:50,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:01:50,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:01:50,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:01:50,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,695 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]. [2024-10-11 20:01:50,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:01:50,716 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:01:50,716 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:01:50,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:01:50,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (1/1) ... [2024-10-11 20:01:50,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:01:50,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:50,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 20:01:50,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 20:01:50,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:01:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:01:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:01:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:01:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:01:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 20:01:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 20:01:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 20:01:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 20:01:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 20:01:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 20:01:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 20:01:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:01:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:01:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 20:01:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 20:01:50,784 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 20:01:50,864 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:01:50,865 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:01:51,165 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:01:51,166 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:01:51,334 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:01:51,335 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 20:01:51,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:01:51 BoogieIcfgContainer [2024-10-11 20:01:51,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:01:51,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:01:51,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:01:51,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:01:51,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:01:50" (1/3) ... [2024-10-11 20:01:51,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23360a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:01:51, skipping insertion in model container [2024-10-11 20:01:51,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:50" (2/3) ... [2024-10-11 20:01:51,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23360a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:01:51, skipping insertion in model container [2024-10-11 20:01:51,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:01:51" (3/3) ... [2024-10-11 20:01:51,345 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2024-10-11 20:01:51,358 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:01:51,359 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 20:01:51,359 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:01:51,401 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 20:01:51,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 88 flow [2024-10-11 20:01:51,453 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2024-10-11 20:01:51,454 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 20:01:51,457 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 53 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. [2024-10-11 20:01:51,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 88 flow [2024-10-11 20:01:51,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 80 flow [2024-10-11 20:01:51,468 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:01:51,473 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;@44f6e570, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:01:51,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-11 20:01:51,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:01:51,477 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 20:01:51,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 20:01:51,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:51,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:01:51,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:01:51,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:51,482 INFO L85 PathProgramCache]: Analyzing trace with hash 400324, now seen corresponding path program 1 times [2024-10-11 20:01:51,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:51,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792239983] [2024-10-11 20:01:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:51,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:51,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:51,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:51,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 20:01:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:51,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:01:51,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:51,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:01:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:51,616 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:51,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:51,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792239983] [2024-10-11 20:01:51,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792239983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:51,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:51,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:01:51,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175599107] [2024-10-11 20:01:51,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:51,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:01:51,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:01:51,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:01:51,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:01:51,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:51,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:51,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:01:51,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:51,776 INFO L124 PetriNetUnfolderBase]: 212/371 cut-off events. [2024-10-11 20:01:51,777 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-11 20:01:51,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 371 events. 212/371 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1452 event pairs, 176 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 705. Up to 364 conditions per place. [2024-10-11 20:01:51,781 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-10-11 20:01:51,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2024-10-11 20:01:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:01:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:01:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-10-11 20:01:51,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-10-11 20:01:51,792 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 50 transitions. [2024-10-11 20:01:51,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2024-10-11 20:01:51,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:01:51,797 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-10-11 20:01:51,798 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} [2024-10-11 20:01:51,801 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-10-11 20:01:51,801 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-10-11 20:01:51,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:51,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:51,802 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:01:51,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 20:01:52,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:52,005 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:01:52,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:52,005 INFO L85 PathProgramCache]: Analyzing trace with hash 400325, now seen corresponding path program 1 times [2024-10-11 20:01:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380333928] [2024-10-11 20:01:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:52,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:52,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:52,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:52,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 20:01:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:52,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:01:52,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:52,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:52,126 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:52,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380333928] [2024-10-11 20:01:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380333928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:52,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:52,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:52,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110056036] [2024-10-11 20:01:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:52,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:52,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:52,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:52,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:52,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:01:52,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:52,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:52,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:01:52,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:52,311 INFO L124 PetriNetUnfolderBase]: 213/374 cut-off events. [2024-10-11 20:01:52,312 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 20:01:52,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 374 events. 213/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1461 event pairs, 176 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 737. Up to 369 conditions per place. [2024-10-11 20:01:52,315 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-10-11 20:01:52,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 132 flow [2024-10-11 20:01:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-10-11 20:01:52,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-10-11 20:01:52,318 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 4 states and 58 transitions. [2024-10-11 20:01:52,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 132 flow [2024-10-11 20:01:52,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:52,320 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2024-10-11 20:01:52,320 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=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-10-11 20:01:52,321 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-10-11 20:01:52,321 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2024-10-11 20:01:52,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:52,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:52,321 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 20:01:52,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:52,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:52,525 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:01:52,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash 384724406, now seen corresponding path program 1 times [2024-10-11 20:01:52,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:52,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706796080] [2024-10-11 20:01:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:52,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:52,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:52,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:52,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 20:01:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:52,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:01:52,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:52,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:52,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:52,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:52,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706796080] [2024-10-11 20:01:52,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706796080] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:52,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:52,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:01:52,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661162867] [2024-10-11 20:01:52,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:52,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:01:52,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:01:52,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:01:52,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:01:52,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:52,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:52,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:01:52,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:53,317 INFO L124 PetriNetUnfolderBase]: 216/383 cut-off events. [2024-10-11 20:01:53,317 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 20:01:53,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 383 events. 216/383 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1533 event pairs, 176 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 744. Up to 372 conditions per place. [2024-10-11 20:01:53,319 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 13 changer transitions 0/41 dead transitions. [2024-10-11 20:01:53,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 201 flow [2024-10-11 20:01:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:01:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:01:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-10-11 20:01:53,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-10-11 20:01:53,323 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 10 states and 111 transitions. [2024-10-11 20:01:53,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 201 flow [2024-10-11 20:01:53,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:01:53,324 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 166 flow [2024-10-11 20:01:53,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-10-11 20:01:53,325 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2024-10-11 20:01:53,325 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 166 flow [2024-10-11 20:01:53,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:53,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:53,325 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:53,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 20:01:53,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:53,528 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:01:53,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash 412069864, now seen corresponding path program 1 times [2024-10-11 20:01:53,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:53,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458013880] [2024-10-11 20:01:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:53,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:53,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:53,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:53,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 20:01:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:53,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:01:53,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:53,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:01:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:53,597 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:53,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458013880] [2024-10-11 20:01:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458013880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:53,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:53,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473245440] [2024-10-11 20:01:53,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:53,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:53,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:53,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:01:53,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:53,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:53,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:01:53,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:53,681 INFO L124 PetriNetUnfolderBase]: 168/302 cut-off events. [2024-10-11 20:01:53,681 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 20:01:53,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 302 events. 168/302 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1119 event pairs, 132 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 621. Up to 286 conditions per place. [2024-10-11 20:01:53,683 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 29 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-10-11 20:01:53,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 232 flow [2024-10-11 20:01:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-10-11 20:01:53,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3581081081081081 [2024-10-11 20:01:53,684 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 166 flow. Second operand 4 states and 53 transitions. [2024-10-11 20:01:53,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 232 flow [2024-10-11 20:01:53,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 202 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 20:01:53,689 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 144 flow [2024-10-11 20:01:53,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-10-11 20:01:53,689 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2024-10-11 20:01:53,689 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 144 flow [2024-10-11 20:01:53,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:53,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:53,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:53,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:53,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:53,905 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:01:53,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash 412069865, now seen corresponding path program 1 times [2024-10-11 20:01:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071833066] [2024-10-11 20:01:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:53,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:53,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:53,912 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:53,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 20:01:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:53,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 20:01:53,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:54,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:54,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071833066] [2024-10-11 20:01:54,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071833066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:54,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:54,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:54,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897756973] [2024-10-11 20:01:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:54,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:54,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:54,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:01:54,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:54,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:54,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:01:54,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:54,135 INFO L124 PetriNetUnfolderBase]: 235/441 cut-off events. [2024-10-11 20:01:54,136 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 20:01:54,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 441 events. 235/441 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1852 event pairs, 200 based on Foata normal form. 23/378 useless extension candidates. Maximal degree in co-relation 895. Up to 295 conditions per place. [2024-10-11 20:01:54,138 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 45 selfloop transitions, 3 changer transitions 2/54 dead transitions. [2024-10-11 20:01:54,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 278 flow [2024-10-11 20:01:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-10-11 20:01:54,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-10-11 20:01:54,139 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 144 flow. Second operand 4 states and 77 transitions. [2024-10-11 20:01:54,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 278 flow [2024-10-11 20:01:54,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:54,141 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 152 flow [2024-10-11 20:01:54,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-10-11 20:01:54,141 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2024-10-11 20:01:54,142 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 152 flow [2024-10-11 20:01:54,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:54,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:54,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:54,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 20:01:54,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:54,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:01:54,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -30695078, now seen corresponding path program 1 times [2024-10-11 20:01:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:54,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269814627] [2024-10-11 20:01:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:54,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:54,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:54,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:54,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 20:01:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:54,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:01:54,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:54,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:54,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:55,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:55,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269814627] [2024-10-11 20:01:55,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269814627] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:55,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:55,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:01:55,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630165687] [2024-10-11 20:01:55,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:55,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:01:55,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:55,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:01:55,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:01:55,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:01:55,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 152 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:55,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:55,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:01:55,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:56,053 INFO L124 PetriNetUnfolderBase]: 475/869 cut-off events. [2024-10-11 20:01:56,053 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-11 20:01:56,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1908 conditions, 869 events. 475/869 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3945 event pairs, 388 based on Foata normal form. 0/730 useless extension candidates. Maximal degree in co-relation 1602. Up to 285 conditions per place. [2024-10-11 20:01:56,058 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 71 selfloop transitions, 12 changer transitions 2/88 dead transitions. [2024-10-11 20:01:56,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 440 flow [2024-10-11 20:01:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:01:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:01:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-10-11 20:01:56,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-10-11 20:01:56,061 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 152 flow. Second operand 10 states and 158 transitions. [2024-10-11 20:01:56,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 440 flow [2024-10-11 20:01:56,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 88 transitions, 435 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:56,064 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 182 flow [2024-10-11 20:01:56,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2024-10-11 20:01:56,065 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2024-10-11 20:01:56,065 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 182 flow [2024-10-11 20:01:56,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:56,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:56,065 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:01:56,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:56,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:56,267 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:01:56,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:56,267 INFO L85 PathProgramCache]: Analyzing trace with hash -385134071, now seen corresponding path program 2 times [2024-10-11 20:01:56,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:56,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671709911] [2024-10-11 20:01:56,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:01:56,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:56,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:56,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:56,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 20:01:56,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:01:56,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:56,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:01:56,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:56,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:56,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:57,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:57,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671709911] [2024-10-11 20:01:57,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671709911] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:57,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:57,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:01:57,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059107694] [2024-10-11 20:01:57,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:57,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:01:57,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:57,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:01:57,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:01:57,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:01:57,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 182 flow. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:57,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:57,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:01:57,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:59,076 INFO L124 PetriNetUnfolderBase]: 481/887 cut-off events. [2024-10-11 20:01:59,076 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-10-11 20:01:59,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 887 events. 481/887 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4152 event pairs, 388 based on Foata normal form. 6/780 useless extension candidates. Maximal degree in co-relation 1661. Up to 852 conditions per place. [2024-10-11 20:01:59,080 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 23 selfloop transitions, 31 changer transitions 0/57 dead transitions. [2024-10-11 20:01:59,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 57 transitions, 404 flow [2024-10-11 20:01:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:01:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:01:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 214 transitions. [2024-10-11 20:01:59,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2628992628992629 [2024-10-11 20:01:59,081 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 182 flow. Second operand 22 states and 214 transitions. [2024-10-11 20:01:59,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 57 transitions, 404 flow [2024-10-11 20:01:59,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 57 transitions, 393 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:01:59,084 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 377 flow [2024-10-11 20:01:59,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=377, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2024-10-11 20:01:59,084 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2024-10-11 20:01:59,084 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 377 flow [2024-10-11 20:01:59,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:59,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:59,085 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:59,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 20:01:59,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:59,286 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:01:59,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash -204987347, now seen corresponding path program 2 times [2024-10-11 20:01:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:59,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202317471] [2024-10-11 20:01:59,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:01:59,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:59,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:59,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:59,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 20:01:59,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:01:59,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:59,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:01:59,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:59,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:01:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 20:01:59,434 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:59,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:59,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202317471] [2024-10-11 20:01:59,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202317471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:59,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:59,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295155020] [2024-10-11 20:01:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:59,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:59,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:01:59,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:59,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:59,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:01:59,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:59,578 INFO L124 PetriNetUnfolderBase]: 439/816 cut-off events. [2024-10-11 20:01:59,578 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-10-11 20:01:59,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 816 events. 439/816 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3829 event pairs, 350 based on Foata normal form. 27/734 useless extension candidates. Maximal degree in co-relation 1811. Up to 776 conditions per place. [2024-10-11 20:01:59,584 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 39 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2024-10-11 20:01:59,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 55 transitions, 463 flow [2024-10-11 20:01:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-10-11 20:01:59,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3716216216216216 [2024-10-11 20:01:59,588 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 377 flow. Second operand 4 states and 55 transitions. [2024-10-11 20:01:59,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 55 transitions, 463 flow [2024-10-11 20:01:59,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 380 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-10-11 20:01:59,593 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 302 flow [2024-10-11 20:01:59,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-10-11 20:01:59,594 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2024-10-11 20:01:59,596 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 302 flow [2024-10-11 20:01:59,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:59,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:59,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:59,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 20:01:59,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:59,799 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:01:59,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1567993509, now seen corresponding path program 1 times [2024-10-11 20:01:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:59,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968935663] [2024-10-11 20:01:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:59,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:59,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:59,803 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:01:59,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 20:01:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:59,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 20:01:59,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:01:59,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:59,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:59,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968935663] [2024-10-11 20:01:59,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968935663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:59,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:59,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:59,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877158491] [2024-10-11 20:01:59,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:59,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:01:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:01:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:01:59,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:01:59,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:59,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:59,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:01:59,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:59,986 INFO L124 PetriNetUnfolderBase]: 682/1222 cut-off events. [2024-10-11 20:01:59,987 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-10-11 20:01:59,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 1222 events. 682/1222 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5880 event pairs, 314 based on Foata normal form. 4/1051 useless extension candidates. Maximal degree in co-relation 2664. Up to 681 conditions per place. [2024-10-11 20:01:59,991 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 58 selfloop transitions, 2 changer transitions 4/68 dead transitions. [2024-10-11 20:01:59,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 462 flow [2024-10-11 20:01:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:01:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:01:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-10-11 20:01:59,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-10-11 20:01:59,993 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 302 flow. Second operand 3 states and 59 transitions. [2024-10-11 20:01:59,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 462 flow [2024-10-11 20:01:59,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 449 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:59,997 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 294 flow [2024-10-11 20:01:59,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-10-11 20:01:59,998 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2024-10-11 20:01:59,998 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 294 flow [2024-10-11 20:01:59,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:59,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:00,000 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:00,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 20:02:00,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:00,201 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:00,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash 952732807, now seen corresponding path program 1 times [2024-10-11 20:02:00,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:00,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931233644] [2024-10-11 20:02:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:00,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:00,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:00,206 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:00,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 20:02:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:00,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 20:02:00,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:00,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:02:00,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:00,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931233644] [2024-10-11 20:02:00,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931233644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:02:00,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:02:00,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:02:00,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822894170] [2024-10-11 20:02:00,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:02:00,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:02:00,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:02:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:02:00,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:00,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:00,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:00,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:00,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:00,423 INFO L124 PetriNetUnfolderBase]: 758/1363 cut-off events. [2024-10-11 20:02:00,424 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-10-11 20:02:00,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 1363 events. 758/1363 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6671 event pairs, 339 based on Foata normal form. 33/1189 useless extension candidates. Maximal degree in co-relation 3083. Up to 916 conditions per place. [2024-10-11 20:02:00,429 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 57 selfloop transitions, 2 changer transitions 6/69 dead transitions. [2024-10-11 20:02:00,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 457 flow [2024-10-11 20:02:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:02:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:02:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-10-11 20:02:00,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-10-11 20:02:00,430 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 294 flow. Second operand 3 states and 60 transitions. [2024-10-11 20:02:00,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 457 flow [2024-10-11 20:02:00,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:02:00,434 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 306 flow [2024-10-11 20:02:00,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-10-11 20:02:00,435 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2024-10-11 20:02:00,437 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 306 flow [2024-10-11 20:02:00,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:00,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:00,437 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 20:02:00,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-11 20:02:00,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:00,638 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:00,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2012507119, now seen corresponding path program 3 times [2024-10-11 20:02:00,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:00,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838325403] [2024-10-11 20:02:00,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:02:00,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:00,642 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:00,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 20:02:00,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 20:02:00,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:00,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:02:00,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:00,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:02:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:01,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:02,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:02,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838325403] [2024-10-11 20:02:02,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838325403] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:02,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:02,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 20:02:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34445582] [2024-10-11 20:02:02,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:02,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 20:02:02,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:02,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 20:02:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 20:02:03,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:02:03,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 306 flow. Second operand has 26 states, 26 states have (on average 8.76923076923077) internal successors, (228), 26 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:03,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:03,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:02:03,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:15,246 INFO L124 PetriNetUnfolderBase]: 770/1399 cut-off events. [2024-10-11 20:02:15,246 INFO L125 PetriNetUnfolderBase]: For 987/987 co-relation queries the response was YES. [2024-10-11 20:02:15,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 1399 events. 770/1399 cut-off events. For 987/987 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6736 event pairs, 651 based on Foata normal form. 12/1204 useless extension candidates. Maximal degree in co-relation 3221. Up to 1344 conditions per place. [2024-10-11 20:02:15,252 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 23 selfloop transitions, 66 changer transitions 0/92 dead transitions. [2024-10-11 20:02:15,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 92 transitions, 724 flow [2024-10-11 20:02:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-11 20:02:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-11 20:02:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 421 transitions. [2024-10-11 20:02:15,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24735605170387778 [2024-10-11 20:02:15,257 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 306 flow. Second operand 46 states and 421 transitions. [2024-10-11 20:02:15,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 92 transitions, 724 flow [2024-10-11 20:02:15,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 92 transitions, 720 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 20:02:15,262 INFO L231 Difference]: Finished difference. Result has 124 places, 92 transitions, 728 flow [2024-10-11 20:02:15,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=728, PETRI_PLACES=124, PETRI_TRANSITIONS=92} [2024-10-11 20:02:15,266 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2024-10-11 20:02:15,266 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 92 transitions, 728 flow [2024-10-11 20:02:15,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.76923076923077) internal successors, (228), 26 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:15,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:15,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:15,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 20:02:15,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:15,467 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:15,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1854380827, now seen corresponding path program 1 times [2024-10-11 20:02:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:15,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81339679] [2024-10-11 20:02:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:15,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:15,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:15,470 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:15,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 20:02:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:15,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:02:15,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:15,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:15,698 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-11 20:02:15,699 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 90 treesize of output 27 [2024-10-11 20:02:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:15,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81339679] [2024-10-11 20:02:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81339679] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:15,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:15,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2024-10-11 20:02:15,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523726479] [2024-10-11 20:02:15,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:15,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:02:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:02:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 20:02:15,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:15,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 92 transitions, 728 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:15,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:15,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:15,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:16,007 INFO L124 PetriNetUnfolderBase]: 1010/1807 cut-off events. [2024-10-11 20:02:16,008 INFO L125 PetriNetUnfolderBase]: For 726/726 co-relation queries the response was YES. [2024-10-11 20:02:16,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4410 conditions, 1807 events. 1010/1807 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8846 event pairs, 204 based on Foata normal form. 3/1540 useless extension candidates. Maximal degree in co-relation 4328. Up to 471 conditions per place. [2024-10-11 20:02:16,014 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 110 selfloop transitions, 4 changer transitions 12/130 dead transitions. [2024-10-11 20:02:16,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 130 transitions, 1075 flow [2024-10-11 20:02:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:02:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:02:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-10-11 20:02:16,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5513513513513514 [2024-10-11 20:02:16,016 INFO L175 Difference]: Start difference. First operand has 124 places, 92 transitions, 728 flow. Second operand 5 states and 102 transitions. [2024-10-11 20:02:16,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 130 transitions, 1075 flow [2024-10-11 20:02:16,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 913 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-11 20:02:16,020 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 586 flow [2024-10-11 20:02:16,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-10-11 20:02:16,021 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2024-10-11 20:02:16,021 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 586 flow [2024-10-11 20:02:16,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:16,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:16,021 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:16,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 20:02:16,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:16,224 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:16,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash 558207916, now seen corresponding path program 2 times [2024-10-11 20:02:16,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:16,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11642607] [2024-10-11 20:02:16,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:02:16,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:16,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:16,226 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:16,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 20:02:16,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:02:16,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:16,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 20:02:16,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:16,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:16,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:16,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11642607] [2024-10-11 20:02:16,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11642607] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:16,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:16,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-11 20:02:16,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53371516] [2024-10-11 20:02:16,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:16,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 20:02:16,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 20:02:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-11 20:02:16,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:16,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 586 flow. Second operand has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:16,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:16,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:16,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:17,278 INFO L124 PetriNetUnfolderBase]: 978/1773 cut-off events. [2024-10-11 20:02:17,278 INFO L125 PetriNetUnfolderBase]: For 1153/1153 co-relation queries the response was YES. [2024-10-11 20:02:17,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4336 conditions, 1773 events. 978/1773 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8750 event pairs, 642 based on Foata normal form. 32/1539 useless extension candidates. Maximal degree in co-relation 4264. Up to 1194 conditions per place. [2024-10-11 20:02:17,285 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 43 selfloop transitions, 45 changer transitions 54/146 dead transitions. [2024-10-11 20:02:17,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 146 transitions, 1008 flow [2024-10-11 20:02:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 20:02:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 20:02:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-10-11 20:02:17,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-10-11 20:02:17,287 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 586 flow. Second operand 9 states and 154 transitions. [2024-10-11 20:02:17,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 146 transitions, 1008 flow [2024-10-11 20:02:17,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 146 transitions, 998 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-11 20:02:17,292 INFO L231 Difference]: Finished difference. Result has 117 places, 92 transitions, 673 flow [2024-10-11 20:02:17,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=673, PETRI_PLACES=117, PETRI_TRANSITIONS=92} [2024-10-11 20:02:17,293 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2024-10-11 20:02:17,293 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 92 transitions, 673 flow [2024-10-11 20:02:17,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:17,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:17,293 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:17,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 20:02:17,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:17,496 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:17,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:17,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1192649071, now seen corresponding path program 3 times [2024-10-11 20:02:17,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:17,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518145454] [2024-10-11 20:02:17,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:02:17,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:17,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:17,500 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:17,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 20:02:17,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 20:02:17,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:17,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:02:17,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:17,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:18,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:18,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518145454] [2024-10-11 20:02:18,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518145454] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:18,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:18,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-11 20:02:18,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330540790] [2024-10-11 20:02:18,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:18,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:02:18,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:18,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:02:18,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:02:18,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:18,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 92 transitions, 673 flow. Second operand has 14 states, 14 states have (on average 11.642857142857142) internal successors, (163), 14 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:18,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:18,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:18,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:19,284 INFO L124 PetriNetUnfolderBase]: 2153/3832 cut-off events. [2024-10-11 20:02:19,284 INFO L125 PetriNetUnfolderBase]: For 4197/4197 co-relation queries the response was YES. [2024-10-11 20:02:19,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9817 conditions, 3832 events. 2153/3832 cut-off events. For 4197/4197 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 21889 event pairs, 790 based on Foata normal form. 86/3331 useless extension candidates. Maximal degree in co-relation 9740. Up to 923 conditions per place. [2024-10-11 20:02:19,299 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 166 selfloop transitions, 18 changer transitions 12/200 dead transitions. [2024-10-11 20:02:19,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 200 transitions, 1438 flow [2024-10-11 20:02:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 20:02:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 20:02:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-10-11 20:02:19,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5180180180180181 [2024-10-11 20:02:19,301 INFO L175 Difference]: Start difference. First operand has 117 places, 92 transitions, 673 flow. Second operand 12 states and 230 transitions. [2024-10-11 20:02:19,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 200 transitions, 1438 flow [2024-10-11 20:02:19,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 200 transitions, 1338 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-10-11 20:02:19,308 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 777 flow [2024-10-11 20:02:19,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=777, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2024-10-11 20:02:19,308 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 85 predicate places. [2024-10-11 20:02:19,308 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 777 flow [2024-10-11 20:02:19,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.642857142857142) internal successors, (163), 14 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:19,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:19,309 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:19,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 20:02:19,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:19,509 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:19,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:19,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1475922173, now seen corresponding path program 4 times [2024-10-11 20:02:19,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:19,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312216439] [2024-10-11 20:02:19,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:02:19,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:19,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:19,513 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:19,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 20:02:19,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:02:19,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:19,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:02:19,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:02:19,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:19,803 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2024-10-11 20:02:19,804 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 91 treesize of output 29 [2024-10-11 20:02:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:02:19,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:19,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312216439] [2024-10-11 20:02:19,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312216439] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:19,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:19,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-10-11 20:02:19,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538451493] [2024-10-11 20:02:19,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:19,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 20:02:19,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 20:02:19,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 20:02:19,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:19,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 777 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 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) [2024-10-11 20:02:19,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:19,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:19,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:23,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:28,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:28,905 INFO L124 PetriNetUnfolderBase]: 3410/6007 cut-off events. [2024-10-11 20:02:28,905 INFO L125 PetriNetUnfolderBase]: For 8415/8415 co-relation queries the response was YES. [2024-10-11 20:02:28,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15867 conditions, 6007 events. 3410/6007 cut-off events. For 8415/8415 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 36516 event pairs, 516 based on Foata normal form. 5/5083 useless extension candidates. Maximal degree in co-relation 15790. Up to 1075 conditions per place. [2024-10-11 20:02:28,985 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 178 selfloop transitions, 23 changer transitions 18/223 dead transitions. [2024-10-11 20:02:28,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 223 transitions, 1685 flow [2024-10-11 20:02:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:02:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:02:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-10-11 20:02:28,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.572972972972973 [2024-10-11 20:02:28,987 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 777 flow. Second operand 10 states and 212 transitions. [2024-10-11 20:02:28,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 223 transitions, 1685 flow [2024-10-11 20:02:28,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 223 transitions, 1612 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-10-11 20:02:28,998 INFO L231 Difference]: Finished difference. Result has 131 places, 115 transitions, 942 flow [2024-10-11 20:02:28,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=942, PETRI_PLACES=131, PETRI_TRANSITIONS=115} [2024-10-11 20:02:28,999 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 95 predicate places. [2024-10-11 20:02:28,999 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 115 transitions, 942 flow [2024-10-11 20:02:28,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 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) [2024-10-11 20:02:28,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:29,000 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:29,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-10-11 20:02:29,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:29,204 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:29,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -960594367, now seen corresponding path program 5 times [2024-10-11 20:02:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:29,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054071209] [2024-10-11 20:02:29,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 20:02:29,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:29,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:29,207 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:29,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 20:02:29,295 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 20:02:29,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:29,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:02:29,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 20:02:29,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:29,434 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-11 20:02:29,434 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 90 treesize of output 27 [2024-10-11 20:02:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 20:02:29,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:29,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054071209] [2024-10-11 20:02:29,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054071209] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:29,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:29,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-10-11 20:02:29,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389189169] [2024-10-11 20:02:29,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:29,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:02:29,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:29,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:02:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:02:29,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:29,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 115 transitions, 942 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:29,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:29,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:29,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:30,265 INFO L124 PetriNetUnfolderBase]: 3410/5987 cut-off events. [2024-10-11 20:02:30,265 INFO L125 PetriNetUnfolderBase]: For 10939/10939 co-relation queries the response was YES. [2024-10-11 20:02:30,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16198 conditions, 5987 events. 3410/5987 cut-off events. For 10939/10939 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 36508 event pairs, 747 based on Foata normal form. 10/5068 useless extension candidates. Maximal degree in co-relation 16117. Up to 1410 conditions per place. [2024-10-11 20:02:30,289 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 127 selfloop transitions, 17 changer transitions 22/170 dead transitions. [2024-10-11 20:02:30,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 170 transitions, 1442 flow [2024-10-11 20:02:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:02:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:02:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-10-11 20:02:30,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5765765765765766 [2024-10-11 20:02:30,290 INFO L175 Difference]: Start difference. First operand has 131 places, 115 transitions, 942 flow. Second operand 6 states and 128 transitions. [2024-10-11 20:02:30,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 170 transitions, 1442 flow [2024-10-11 20:02:30,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 170 transitions, 1371 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-10-11 20:02:30,305 INFO L231 Difference]: Finished difference. Result has 135 places, 111 transitions, 904 flow [2024-10-11 20:02:30,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=904, PETRI_PLACES=135, PETRI_TRANSITIONS=111} [2024-10-11 20:02:30,306 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 99 predicate places. [2024-10-11 20:02:30,306 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 111 transitions, 904 flow [2024-10-11 20:02:30,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:30,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:30,306 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:30,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-11 20:02:30,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:30,507 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:30,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:30,507 INFO L85 PathProgramCache]: Analyzing trace with hash -4382558, now seen corresponding path program 6 times [2024-10-11 20:02:30,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:30,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854967299] [2024-10-11 20:02:30,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 20:02:30,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:30,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:30,510 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:30,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-11 20:02:30,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 20:02:30,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:30,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 20:02:30,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:30,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:31,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854967299] [2024-10-11 20:02:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854967299] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:31,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:31,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-10-11 20:02:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961341518] [2024-10-11 20:02:31,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:31,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 20:02:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:31,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 20:02:31,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-10-11 20:02:31,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:31,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 111 transitions, 904 flow. Second operand has 18 states, 18 states have (on average 11.5) internal successors, (207), 18 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:31,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:31,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:31,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:34,207 INFO L124 PetriNetUnfolderBase]: 4997/8718 cut-off events. [2024-10-11 20:02:34,207 INFO L125 PetriNetUnfolderBase]: For 14935/14935 co-relation queries the response was YES. [2024-10-11 20:02:34,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23578 conditions, 8718 events. 4997/8718 cut-off events. For 14935/14935 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 55104 event pairs, 1168 based on Foata normal form. 87/7458 useless extension candidates. Maximal degree in co-relation 23495. Up to 2091 conditions per place. [2024-10-11 20:02:34,239 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 152 selfloop transitions, 30 changer transitions 67/253 dead transitions. [2024-10-11 20:02:34,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 253 transitions, 1944 flow [2024-10-11 20:02:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 20:02:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 20:02:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 294 transitions. [2024-10-11 20:02:34,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5297297297297298 [2024-10-11 20:02:34,241 INFO L175 Difference]: Start difference. First operand has 135 places, 111 transitions, 904 flow. Second operand 15 states and 294 transitions. [2024-10-11 20:02:34,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 253 transitions, 1944 flow [2024-10-11 20:02:34,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 253 transitions, 1800 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-10-11 20:02:34,257 INFO L231 Difference]: Finished difference. Result has 139 places, 120 transitions, 991 flow [2024-10-11 20:02:34,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=991, PETRI_PLACES=139, PETRI_TRANSITIONS=120} [2024-10-11 20:02:34,257 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 103 predicate places. [2024-10-11 20:02:34,257 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 120 transitions, 991 flow [2024-10-11 20:02:34,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.5) internal successors, (207), 18 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:34,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:34,258 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:34,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-11 20:02:34,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:34,458 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:34,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash 293382709, now seen corresponding path program 7 times [2024-10-11 20:02:34,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:34,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359857623] [2024-10-11 20:02:34,459 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 20:02:34,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:34,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:34,462 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:34,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-11 20:02:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:34,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:02:34,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 20:02:34,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:34,741 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2024-10-11 20:02:34,741 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 91 treesize of output 29 [2024-10-11 20:02:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 20:02:34,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359857623] [2024-10-11 20:02:34,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359857623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:34,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:34,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-10-11 20:02:34,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984339306] [2024-10-11 20:02:34,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:34,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:02:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:02:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:02:34,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:34,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 120 transitions, 991 flow. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:34,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:34,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:34,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:38,950 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 [] [2024-10-11 20:02:43,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:45,217 INFO L124 PetriNetUnfolderBase]: 7489/12924 cut-off events. [2024-10-11 20:02:45,217 INFO L125 PetriNetUnfolderBase]: For 19161/19161 co-relation queries the response was YES. [2024-10-11 20:02:45,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35031 conditions, 12924 events. 7489/12924 cut-off events. For 19161/19161 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 85698 event pairs, 812 based on Foata normal form. 40/10970 useless extension candidates. Maximal degree in co-relation 34950. Up to 2350 conditions per place. [2024-10-11 20:02:45,268 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 255 selfloop transitions, 55 changer transitions 36/350 dead transitions. [2024-10-11 20:02:45,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 350 transitions, 2555 flow [2024-10-11 20:02:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 20:02:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 20:02:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 416 transitions. [2024-10-11 20:02:45,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5917496443812233 [2024-10-11 20:02:45,270 INFO L175 Difference]: Start difference. First operand has 139 places, 120 transitions, 991 flow. Second operand 19 states and 416 transitions. [2024-10-11 20:02:45,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 350 transitions, 2555 flow [2024-10-11 20:02:45,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 350 transitions, 2434 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-10-11 20:02:45,294 INFO L231 Difference]: Finished difference. Result has 153 places, 142 transitions, 1319 flow [2024-10-11 20:02:45,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1319, PETRI_PLACES=153, PETRI_TRANSITIONS=142} [2024-10-11 20:02:45,295 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 117 predicate places. [2024-10-11 20:02:45,295 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 142 transitions, 1319 flow [2024-10-11 20:02:45,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:45,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:45,295 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:45,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-10-11 20:02:45,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:45,496 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:45,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:45,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1003345675, now seen corresponding path program 8 times [2024-10-11 20:02:45,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:45,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446092551] [2024-10-11 20:02:45,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:02:45,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:45,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:45,500 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:02:45,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-11 20:02:45,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:02:45,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:45,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 20:02:45,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:45,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:02:45,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-10-11 20:02:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:46,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:46,583 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-11 20:02:46,584 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 90 treesize of output 27 [2024-10-11 20:02:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:48,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:48,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446092551] [2024-10-11 20:02:48,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446092551] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:48,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:48,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-10-11 20:02:48,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601759488] [2024-10-11 20:02:48,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:48,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 20:02:48,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 20:02:48,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2024-10-11 20:02:48,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:02:48,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 142 transitions, 1319 flow. Second operand has 23 states, 23 states have (on average 10.173913043478262) internal successors, (234), 23 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:02:48,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:48,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:02:48,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:00,189 INFO L124 PetriNetUnfolderBase]: 10536/18207 cut-off events. [2024-10-11 20:03:00,189 INFO L125 PetriNetUnfolderBase]: For 33057/33057 co-relation queries the response was YES. [2024-10-11 20:03:00,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49304 conditions, 18207 events. 10536/18207 cut-off events. For 33057/33057 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 126227 event pairs, 769 based on Foata normal form. 98/15486 useless extension candidates. Maximal degree in co-relation 49214. Up to 3325 conditions per place. [2024-10-11 20:03:00,282 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 420 selfloop transitions, 143 changer transitions 235/801 dead transitions. [2024-10-11 20:03:00,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 801 transitions, 5955 flow [2024-10-11 20:03:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-11 20:03:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-10-11 20:03:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 1029 transitions. [2024-10-11 20:03:00,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5348232848232848 [2024-10-11 20:03:00,285 INFO L175 Difference]: Start difference. First operand has 153 places, 142 transitions, 1319 flow. Second operand 52 states and 1029 transitions. [2024-10-11 20:03:00,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 801 transitions, 5955 flow [2024-10-11 20:03:00,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 801 transitions, 5696 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-10-11 20:03:00,354 INFO L231 Difference]: Finished difference. Result has 208 places, 242 transitions, 2695 flow [2024-10-11 20:03:00,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2695, PETRI_PLACES=208, PETRI_TRANSITIONS=242} [2024-10-11 20:03:00,355 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 172 predicate places. [2024-10-11 20:03:00,355 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 242 transitions, 2695 flow [2024-10-11 20:03:00,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.173913043478262) internal successors, (234), 23 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:00,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:00,355 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:00,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-10-11 20:03:00,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:00,557 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:03:00,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:00,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1987626357, now seen corresponding path program 9 times [2024-10-11 20:03:00,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:00,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743563468] [2024-10-11 20:03:00,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:03:00,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:00,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:00,562 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:00,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-10-11 20:03:00,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 20:03:00,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:00,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 20:03:00,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:00,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:00,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-10-11 20:03:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:01,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:02,302 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2024-10-11 20:03:02,303 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 91 treesize of output 29 [2024-10-11 20:03:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:03,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:03,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743563468] [2024-10-11 20:03:03,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743563468] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:03,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:03,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-10-11 20:03:03,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54888656] [2024-10-11 20:03:03,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:03,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 20:03:03,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:03,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 20:03:03,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2024-10-11 20:03:03,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:03:03,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 242 transitions, 2695 flow. Second operand has 23 states, 23 states have (on average 10.173913043478262) internal successors, (234), 23 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:03,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:03,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:03:03,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:11,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:03:16,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:03:20,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:03:24,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []