./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-more-queue-add-2-nl.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-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:59:49,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:59:49,641 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:59:49,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:59:49,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:59:49,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:59:49,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:59:49,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:59:49,666 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:59:49,666 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:59:49,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:59:49,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:59:49,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:59:49,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:59:49,669 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:59:49,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:59:49,669 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:59:49,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:59:49,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:59:49,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:59:49,670 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:59:49,673 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:59:49,673 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:59:49,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:59:49,673 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:59:49,673 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:59:49,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:59:49,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:59:49,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:59:49,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:59:49,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:59:49,674 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:59:49,674 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:59:49,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:49,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:59:49,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:59:49,675 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:59:49,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:59:49,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:59:49,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:59:49,675 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:59:49,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:59:49,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-10-11 19:59:49,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:59:49,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:59:49,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:59:49,886 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:59:49,886 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:59:49,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-11 19:59:51,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:59:51,203 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:59:51,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-11 19:59:51,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e48a374e7/32bc2d8f53c04b8abb20500cd804b1b5/FLAG7b0924d82 [2024-10-11 19:59:51,613 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e48a374e7/32bc2d8f53c04b8abb20500cd804b1b5 [2024-10-11 19:59:51,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:59:51,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:59:51,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:51,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:59:51,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:59:51,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:51" (1/1) ... [2024-10-11 19:59:51,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4f60aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:51, skipping insertion in model container [2024-10-11 19:59:51,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:51" (1/1) ... [2024-10-11 19:59:51,647 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:51,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:51,822 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:59:51,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f368cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:51, skipping insertion in model container [2024-10-11 19:59:51,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:51,823 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:59:51,824 INFO L158 Benchmark]: Toolchain (without parser) took 208.67ms. Allocated memory is still 134.2MB. Free memory was 63.3MB in the beginning and 51.9MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:59:51,825 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:59:51,825 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.80ms. Allocated memory is still 134.2MB. Free memory was 63.0MB in the beginning and 51.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:59:51,826 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.80ms. Allocated memory is still 134.2MB. Free memory was 63.0MB in the beginning and 51.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 114]: 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-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:59:53,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:59:53,456 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:59:53,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:59:53,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:59:53,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:59:53,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:59:53,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:59:53,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:59:53,492 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:59:53,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:59:53,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:59:53,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:59:53,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:59:53,493 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:59:53,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:59:53,493 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:59:53,494 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:59:53,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:59:53,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:59:53,495 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:59:53,495 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:59:53,496 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:59:53,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:59:53,496 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:59:53,496 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:59:53,496 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:59:53,497 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:59:53,497 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:59:53,497 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:59:53,497 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:59:53,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:59:53,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:59:53,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:59:53,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:59:53,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:53,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:59:53,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:59:53,500 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:59:53,500 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:59:53,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:59:53,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:59:53,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:59:53,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:59:53,501 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:59:53,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-10-11 19:59:53,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:59:53,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:59:53,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:59:53,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:59:53,772 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:59:53,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-11 19:59:55,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:59:55,139 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:59:55,141 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-11 19:59:55,150 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0a40f24cf/a7e53745ef3347d4a3b2b79e533b4f31/FLAG9ba09713a [2024-10-11 19:59:55,162 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0a40f24cf/a7e53745ef3347d4a3b2b79e533b4f31 [2024-10-11 19:59:55,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:59:55,165 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:59:55,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:55,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:59:55,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:59:55,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7fe564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55, skipping insertion in model container [2024-10-11 19:59:55,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:55,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:55,389 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:59:55,394 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:55,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:55,420 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:59:55,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:55,468 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:59:55,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55 WrapperNode [2024-10-11 19:59:55,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:55,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:55,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:59:55,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:59:55,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,503 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 157 [2024-10-11 19:59:55,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:55,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:59:55,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:59:55,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:59:55,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,524 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,542 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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 19:59:55,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:59:55,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:59:55,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:59:55,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:59:55,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (1/1) ... [2024-10-11 19:59:55,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:55,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:55,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:59:55,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:59:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:59:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:59:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:59:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:59:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:59:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:59:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:59:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:59:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:59:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:59:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:59:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:59:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:59:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:59:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:59:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:59:55,638 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:59:55,745 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:59:55,747 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:59:56,061 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:59:56,061 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:59:56,253 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:59:56,253 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:59:56,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:56 BoogieIcfgContainer [2024-10-11 19:59:56,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:59:56,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:59:56,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:59:56,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:59:56,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:59:55" (1/3) ... [2024-10-11 19:59:56,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651419f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:56, skipping insertion in model container [2024-10-11 19:59:56,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:55" (2/3) ... [2024-10-11 19:59:56,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651419f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:56, skipping insertion in model container [2024-10-11 19:59:56,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:56" (3/3) ... [2024-10-11 19:59:56,260 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-10-11 19:59:56,271 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:59:56,271 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-11 19:59:56,271 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:59:56,302 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:59:56,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-11 19:59:56,356 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-11 19:59:56,357 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:59:56,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 79 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-11 19:59:56,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-11 19:59:56,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-10-11 19:59:56,372 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:59:56,376 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;@5d85fccb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:59:56,376 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-11 19:59:56,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:59:56,379 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:59:56,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:59:56,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:56,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:59:56,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 19:59:56,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:56,386 INFO L85 PathProgramCache]: Analyzing trace with hash 504850, now seen corresponding path program 1 times [2024-10-11 19:59:56,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:56,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805871882] [2024-10-11 19:59:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:56,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:56,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:56,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:56,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:59:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:56,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:59:56,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:56,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:59:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:56,532 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:56,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:56,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805871882] [2024-10-11 19:59:56,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805871882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:56,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:56,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:59:56,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915027302] [2024-10-11 19:59:56,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:56,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:59:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:56,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:59:56,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:59:56,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 19:59:56,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:56,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:56,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 19:59:56,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:56,728 INFO L124 PetriNetUnfolderBase]: 238/446 cut-off events. [2024-10-11 19:59:56,728 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-11 19:59:56,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 446 events. 238/446 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2044 event pairs, 201 based on Foata normal form. 22/334 useless extension candidates. Maximal degree in co-relation 814. Up to 388 conditions per place. [2024-10-11 19:59:56,734 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 25 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-11 19:59:56,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 132 flow [2024-10-11 19:59:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:59:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:59:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-11 19:59:56,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-11 19:59:56,745 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 57 transitions. [2024-10-11 19:59:56,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 132 flow [2024-10-11 19:59:56,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:59:56,749 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2024-10-11 19:59:56,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-11 19:59:56,755 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-10-11 19:59:56,755 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2024-10-11 19:59:56,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:56,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:56,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:59:56,759 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 (2)] Forceful destruction successful, exit code 0 [2024-10-11 19:59:56,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:56,959 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 19:59:56,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash 504851, now seen corresponding path program 1 times [2024-10-11 19:59:56,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:56,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582694745] [2024-10-11 19:59:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:56,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:56,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:56,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:56,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:59:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:56,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:59:56,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:57,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:59:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:57,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:57,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:57,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582694745] [2024-10-11 19:59:57,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582694745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:57,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:57,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:57,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779604956] [2024-10-11 19:59:57,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:57,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:57,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:57,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:57,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 19:59:57,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 19:59:57,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:57,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 19:59:57,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:57,291 INFO L124 PetriNetUnfolderBase]: 239/449 cut-off events. [2024-10-11 19:59:57,292 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:59:57,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 449 events. 239/449 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2058 event pairs, 201 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 838. Up to 393 conditions per place. [2024-10-11 19:59:57,295 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-10-11 19:59:57,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 144 flow [2024-10-11 19:59:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-11 19:59:57,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-10-11 19:59:57,306 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 4 states and 68 transitions. [2024-10-11 19:59:57,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 144 flow [2024-10-11 19:59:57,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:57,307 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 97 flow [2024-10-11 19:59:57,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-10-11 19:59:57,308 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-11 19:59:57,308 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 97 flow [2024-10-11 19:59:57,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 19:59:57,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:57,309 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:59:57,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 19:59:57,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:57,510 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 19:59:57,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:57,510 INFO L85 PathProgramCache]: Analyzing trace with hash 485177513, now seen corresponding path program 1 times [2024-10-11 19:59:57,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:57,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713270357] [2024-10-11 19:59:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:57,511 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 19:59:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:57,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:57,514 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 (4)] Waiting until timeout for monitored process [2024-10-11 19:59:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:57,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:59:57,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:57,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:59:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:57,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:57,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:57,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713270357] [2024-10-11 19:59:57,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713270357] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:57,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:57,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:59:57,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704850521] [2024-10-11 19:59:57,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:57,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:59:57,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:57,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:59:57,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:59:57,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 19:59:57,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:57,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:57,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 19:59:57,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:58,326 INFO L124 PetriNetUnfolderBase]: 242/458 cut-off events. [2024-10-11 19:59:58,327 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:59:58,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 458 events. 242/458 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2119 event pairs, 201 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 845. Up to 396 conditions per place. [2024-10-11 19:59:58,332 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2024-10-11 19:59:58,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 213 flow [2024-10-11 19:59:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:59:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:59:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-10-11 19:59:58,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3325 [2024-10-11 19:59:58,335 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 97 flow. Second operand 10 states and 133 transitions. [2024-10-11 19:59:58,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 213 flow [2024-10-11 19:59:58,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:59:58,336 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 174 flow [2024-10-11 19:59:58,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-11 19:59:58,337 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-10-11 19:59:58,337 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 174 flow [2024-10-11 19:59:58,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:58,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:58,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:59:58,340 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 (4)] Forceful destruction successful, exit code 0 [2024-10-11 19:59:58,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:58,538 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 19:59:58,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2137644518, now seen corresponding path program 1 times [2024-10-11 19:59:58,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:58,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870044946] [2024-10-11 19:59:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:58,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:58,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:58,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:58,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:59:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:58,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:59:58,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:58,621 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:58,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:58,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870044946] [2024-10-11 19:59:58,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870044946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:58,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:58,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:58,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736779604] [2024-10-11 19:59:58,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:58,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:58,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:58,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:58,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-11 19:59:58,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:58,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:58,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-11 19:59:58,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:58,756 INFO L124 PetriNetUnfolderBase]: 254/497 cut-off events. [2024-10-11 19:59:58,756 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-11 19:59:58,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 497 events. 254/497 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2312 event pairs, 214 based on Foata normal form. 17/387 useless extension candidates. Maximal degree in co-relation 959. Up to 400 conditions per place. [2024-10-11 19:59:58,758 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 36 selfloop transitions, 2 changer transitions 8/52 dead transitions. [2024-10-11 19:59:58,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 282 flow [2024-10-11 19:59:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-10-11 19:59:58,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-11 19:59:58,760 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 174 flow. Second operand 4 states and 86 transitions. [2024-10-11 19:59:58,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 282 flow [2024-10-11 19:59:58,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 252 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:58,761 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 162 flow [2024-10-11 19:59:58,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-11 19:59:58,762 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-10-11 19:59:58,762 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 162 flow [2024-10-11 19:59:58,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:58,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:58,762 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:58,770 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 19:59:58,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:58,965 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 19:59:58,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1360547268, now seen corresponding path program 1 times [2024-10-11 19:59:58,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:58,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256024095] [2024-10-11 19:59:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:58,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:58,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:58,967 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:58,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:59:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:59,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:59:59,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:59,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:59:59,144 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 19:59:59,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:59,524 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 19:59:59,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:59,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256024095] [2024-10-11 19:59:59,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256024095] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:59,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:59,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 19:59:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800552443] [2024-10-11 19:59:59,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:59,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 19:59:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:59,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 19:59:59,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:59:59,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 19:59:59,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 19:59:59,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:59,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 19:59:59,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:00,652 INFO L124 PetriNetUnfolderBase]: 571/1087 cut-off events. [2024-10-11 20:00:00,652 INFO L125 PetriNetUnfolderBase]: For 108/120 co-relation queries the response was YES. [2024-10-11 20:00:00,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 1087 events. 571/1087 cut-off events. For 108/120 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5800 event pairs, 473 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 2411. Up to 390 conditions per place. [2024-10-11 20:00:00,657 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 69 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-10-11 20:00:00,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 432 flow [2024-10-11 20:00:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 20:00:00,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 20:00:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-10-11 20:00:00,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-10-11 20:00:00,659 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 162 flow. Second operand 8 states and 156 transitions. [2024-10-11 20:00:00,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 432 flow [2024-10-11 20:00:00,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:00:00,661 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 193 flow [2024-10-11 20:00:00,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-10-11 20:00:00,662 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-10-11 20:00:00,662 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 193 flow [2024-10-11 20:00:00,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 20:00:00,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:00,663 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:00,667 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 20:00:00,863 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 20:00:00,864 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:00,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1360547267, now seen corresponding path program 1 times [2024-10-11 20:00:00,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:00,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150422736] [2024-10-11 20:00:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:00,865 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 20:00:00,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:00,866 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 20:00:00,866 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 20:00:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:00,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:00:00,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:00,910 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 20:00:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:00,927 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:00,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:00,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150422736] [2024-10-11 20:00:00,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150422736] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:00,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:00,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:00:00,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407501213] [2024-10-11 20:00:00,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:00,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:00:00,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:00,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:00:00,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:00:00,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 20:00:00,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 20:00:00,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:00,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 20:00:00,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:01,040 INFO L124 PetriNetUnfolderBase]: 380/745 cut-off events. [2024-10-11 20:00:01,040 INFO L125 PetriNetUnfolderBase]: For 317/333 co-relation queries the response was YES. [2024-10-11 20:00:01,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700 conditions, 745 events. 380/745 cut-off events. For 317/333 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3536 event pairs, 302 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 1667. Up to 622 conditions per place. [2024-10-11 20:00:01,043 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 30 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2024-10-11 20:00:01,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 251 flow [2024-10-11 20:00:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:00:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:00:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-10-11 20:00:01,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-10-11 20:00:01,044 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 193 flow. Second operand 4 states and 63 transitions. [2024-10-11 20:00:01,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 251 flow [2024-10-11 20:00:01,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 243 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:00:01,046 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 183 flow [2024-10-11 20:00:01,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-10-11 20:00:01,046 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-10-11 20:00:01,047 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 183 flow [2024-10-11 20:00:01,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 20:00:01,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:01,047 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:00:01,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 20:00:01,250 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 20:00:01,251 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:01,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash 718959979, now seen corresponding path program 2 times [2024-10-11 20:00:01,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:01,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999612426] [2024-10-11 20:00:01,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:01,251 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 20:00:01,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:01,252 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 20:00:01,253 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 20:00:01,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:00:01,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:01,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:00:01,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:01,313 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 20:00:01,506 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 20:00:01,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:01,997 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 20:00:01,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:01,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999612426] [2024-10-11 20:00:01,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999612426] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:01,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:01,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:00:01,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135838949] [2024-10-11 20:00:01,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:01,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:00:01,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:01,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:00:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:00:02,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 20:00:02,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 183 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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 20:00:02,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:02,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 20:00:02,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:03,931 INFO L124 PetriNetUnfolderBase]: 386/763 cut-off events. [2024-10-11 20:00:03,931 INFO L125 PetriNetUnfolderBase]: For 356/372 co-relation queries the response was YES. [2024-10-11 20:00:03,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 763 events. 386/763 cut-off events. For 356/372 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3643 event pairs, 302 based on Foata normal form. 6/719 useless extension candidates. Maximal degree in co-relation 1670. Up to 633 conditions per place. [2024-10-11 20:00:03,935 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 24 selfloop transitions, 30 changer transitions 0/59 dead transitions. [2024-10-11 20:00:03,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 411 flow [2024-10-11 20:00:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:00:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:00:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 258 transitions. [2024-10-11 20:00:03,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29318181818181815 [2024-10-11 20:00:03,941 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 183 flow. Second operand 22 states and 258 transitions. [2024-10-11 20:00:03,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 411 flow [2024-10-11 20:00:03,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:00:03,943 INFO L231 Difference]: Finished difference. Result has 78 places, 59 transitions, 381 flow [2024-10-11 20:00:03,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=381, PETRI_PLACES=78, PETRI_TRANSITIONS=59} [2024-10-11 20:00:03,944 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2024-10-11 20:00:03,944 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 59 transitions, 381 flow [2024-10-11 20:00:03,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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 20:00:03,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:03,944 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:03,949 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 (8)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:04,144 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 20:00:04,145 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:04,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash -462962238, now seen corresponding path program 2 times [2024-10-11 20:00:04,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:04,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464631049] [2024-10-11 20:00:04,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:04,146 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 20:00:04,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:04,147 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 20:00:04,148 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 20:00:04,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:00:04,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:04,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:00:04,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:04,204 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 20:00:04,302 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 20:00:04,302 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:04,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:04,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464631049] [2024-10-11 20:00:04,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464631049] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:04,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:04,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:00:04,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968017505] [2024-10-11 20:00:04,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:04,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:00:04,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:04,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:00:04,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:00:04,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-11 20:00:04,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 59 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 20:00:04,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:04,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-11 20:00:04,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:04,418 INFO L124 PetriNetUnfolderBase]: 329/661 cut-off events. [2024-10-11 20:00:04,419 INFO L125 PetriNetUnfolderBase]: For 342/358 co-relation queries the response was YES. [2024-10-11 20:00:04,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 661 events. 329/661 cut-off events. For 342/358 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3055 event pairs, 249 based on Foata normal form. 34/650 useless extension candidates. Maximal degree in co-relation 1431. Up to 532 conditions per place. [2024-10-11 20:00:04,421 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 39 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2024-10-11 20:00:04,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 56 transitions, 457 flow [2024-10-11 20:00:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:00:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:00:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-11 20:00:04,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-10-11 20:00:04,422 INFO L175 Difference]: Start difference. First operand has 78 places, 59 transitions, 381 flow. Second operand 4 states and 64 transitions. [2024-10-11 20:00:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 56 transitions, 457 flow [2024-10-11 20:00:04,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 376 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-10-11 20:00:04,425 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 298 flow [2024-10-11 20:00:04,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-10-11 20:00:04,425 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2024-10-11 20:00:04,425 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 298 flow [2024-10-11 20:00:04,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 20:00:04,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:04,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:04,430 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 20:00:04,628 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 20:00:04,629 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:04,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2048442773, now seen corresponding path program 1 times [2024-10-11 20:00:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:04,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65518355] [2024-10-11 20:00:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:04,630 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 20:00:04,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:04,631 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 20:00:04,632 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 20:00:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:04,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 20:00:04,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:04,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:04,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:04,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65518355] [2024-10-11 20:00:04,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65518355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:04,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:04,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:00:04,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467827827] [2024-10-11 20:00:04,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:04,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:00:04,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:04,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:00:04,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:00:04,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-11 20:00:04,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 20:00:04,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:04,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-11 20:00:04,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:04,792 INFO L124 PetriNetUnfolderBase]: 353/712 cut-off events. [2024-10-11 20:00:04,792 INFO L125 PetriNetUnfolderBase]: For 168/180 co-relation queries the response was YES. [2024-10-11 20:00:04,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 712 events. 353/712 cut-off events. For 168/180 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3201 event pairs, 102 based on Foata normal form. 18/694 useless extension candidates. Maximal degree in co-relation 1547. Up to 475 conditions per place. [2024-10-11 20:00:04,795 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 54 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-10-11 20:00:04,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 431 flow [2024-10-11 20:00:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:00:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:00:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-10-11 20:00:04,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-10-11 20:00:04,796 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 298 flow. Second operand 3 states and 59 transitions. [2024-10-11 20:00:04,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 431 flow [2024-10-11 20:00:04,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:00:04,799 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 309 flow [2024-10-11 20:00:04,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-11 20:00:04,800 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-10-11 20:00:04,800 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 309 flow [2024-10-11 20:00:04,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 20:00:04,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:04,801 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:04,806 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 (10)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:05,001 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 20:00:05,002 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:05,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1448876003, now seen corresponding path program 2 times [2024-10-11 20:00:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:05,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263402241] [2024-10-11 20:00:05,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:05,002 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 20:00:05,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:05,005 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 20:00:05,005 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 20:00:05,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:00:05,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:05,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:00:05,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:05,432 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:05,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:05,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263402241] [2024-10-11 20:00:05,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263402241] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:05,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:05,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 20:00:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271439790] [2024-10-11 20:00:05,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:05,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:00:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:05,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:00:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:00:05,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 20:00:05,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 309 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:05,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:05,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 20:00:05,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:05,809 INFO L124 PetriNetUnfolderBase]: 464/922 cut-off events. [2024-10-11 20:00:05,809 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2024-10-11 20:00:05,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 922 events. 464/922 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4436 event pairs, 87 based on Foata normal form. 3/883 useless extension candidates. Maximal degree in co-relation 2285. Up to 610 conditions per place. [2024-10-11 20:00:05,813 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 61 selfloop transitions, 23 changer transitions 3/91 dead transitions. [2024-10-11 20:00:05,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 91 transitions, 573 flow [2024-10-11 20:00:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 20:00:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 20:00:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-10-11 20:00:05,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3340909090909091 [2024-10-11 20:00:05,814 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 309 flow. Second operand 11 states and 147 transitions. [2024-10-11 20:00:05,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 91 transitions, 573 flow [2024-10-11 20:00:05,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 91 transitions, 551 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-11 20:00:05,817 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 395 flow [2024-10-11 20:00:05,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=395, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-10-11 20:00:05,819 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-10-11 20:00:05,819 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 395 flow [2024-10-11 20:00:05,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:05,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:05,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:05,823 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 20:00:06,020 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 20:00:06,021 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:06,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:06,021 INFO L85 PathProgramCache]: Analyzing trace with hash 679100977, now seen corresponding path program 3 times [2024-10-11 20:00:06,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:06,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13324708] [2024-10-11 20:00:06,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:00:06,022 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 20:00:06,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:06,023 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 20:00:06,024 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 20:00:06,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 20:00:06,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:06,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:00:06,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:06,446 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:06,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:06,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13324708] [2024-10-11 20:00:06,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13324708] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:06,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:06,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 20:00:06,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661570518] [2024-10-11 20:00:06,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:06,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:00:06,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:06,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:00:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:00:06,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 20:00:06,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 395 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:06,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:06,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 20:00:06,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:06,857 INFO L124 PetriNetUnfolderBase]: 536/1105 cut-off events. [2024-10-11 20:00:06,858 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2024-10-11 20:00:06,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3106 conditions, 1105 events. 536/1105 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5771 event pairs, 129 based on Foata normal form. 3/1054 useless extension candidates. Maximal degree in co-relation 3057. Up to 760 conditions per place. [2024-10-11 20:00:06,862 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 28 changer transitions 3/99 dead transitions. [2024-10-11 20:00:06,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 713 flow [2024-10-11 20:00:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 20:00:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 20:00:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-10-11 20:00:06,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3340909090909091 [2024-10-11 20:00:06,864 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 395 flow. Second operand 11 states and 147 transitions. [2024-10-11 20:00:06,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 713 flow [2024-10-11 20:00:06,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 99 transitions, 678 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 20:00:06,868 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 539 flow [2024-10-11 20:00:06,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-10-11 20:00:06,870 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-10-11 20:00:06,870 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 539 flow [2024-10-11 20:00:06,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:06,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:06,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:06,874 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 20:00:07,071 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 20:00:07,071 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:07,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:07,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1331573087, now seen corresponding path program 4 times [2024-10-11 20:00:07,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:07,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871828040] [2024-10-11 20:00:07,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:00:07,072 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 20:00:07,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:07,073 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 20:00:07,073 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 20:00:07,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:00:07,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:07,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 20:00:07,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:07,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:07,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:07,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871828040] [2024-10-11 20:00:07,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871828040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:07,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:07,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 20:00:07,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821766828] [2024-10-11 20:00:07,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:07,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:00:07,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:07,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:00:07,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:00:07,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 20:00:07,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 539 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 20:00:07,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:07,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 20:00:07,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:07,748 INFO L124 PetriNetUnfolderBase]: 647/1396 cut-off events. [2024-10-11 20:00:07,748 INFO L125 PetriNetUnfolderBase]: For 2254/2254 co-relation queries the response was YES. [2024-10-11 20:00:07,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4516 conditions, 1396 events. 647/1396 cut-off events. For 2254/2254 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8346 event pairs, 45 based on Foata normal form. 3/1399 useless extension candidates. Maximal degree in co-relation 4461. Up to 688 conditions per place. [2024-10-11 20:00:07,754 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 78 selfloop transitions, 35 changer transitions 5/123 dead transitions. [2024-10-11 20:00:07,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 123 transitions, 984 flow [2024-10-11 20:00:07,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 20:00:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 20:00:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-10-11 20:00:07,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-10-11 20:00:07,758 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 539 flow. Second operand 11 states and 167 transitions. [2024-10-11 20:00:07,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 123 transitions, 984 flow [2024-10-11 20:00:07,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 123 transitions, 951 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-10-11 20:00:07,766 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 707 flow [2024-10-11 20:00:07,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=707, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-10-11 20:00:07,767 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2024-10-11 20:00:07,767 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 707 flow [2024-10-11 20:00:07,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 20:00:07,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:07,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:07,774 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 20:00:07,968 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 20:00:07,968 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:07,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:07,968 INFO L85 PathProgramCache]: Analyzing trace with hash 801342129, now seen corresponding path program 5 times [2024-10-11 20:00:07,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:07,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049172232] [2024-10-11 20:00:07,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 20:00:07,969 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 20:00:07,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:07,971 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 20:00:07,972 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 20:00:08,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:00:08,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:08,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:00:08,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:08,367 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:08,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:08,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049172232] [2024-10-11 20:00:08,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049172232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:08,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:08,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 20:00:08,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349220964] [2024-10-11 20:00:08,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:08,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:00:08,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:08,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:00:08,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:00:08,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 20:00:08,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 707 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:08,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:08,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 20:00:08,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:12,610 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 20:00:12,852 INFO L124 PetriNetUnfolderBase]: 725/1519 cut-off events. [2024-10-11 20:00:12,853 INFO L125 PetriNetUnfolderBase]: For 4180/4180 co-relation queries the response was YES. [2024-10-11 20:00:12,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 1519 events. 725/1519 cut-off events. For 4180/4180 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9025 event pairs, 141 based on Foata normal form. 3/1522 useless extension candidates. Maximal degree in co-relation 5689. Up to 1033 conditions per place. [2024-10-11 20:00:12,860 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 80 selfloop transitions, 39 changer transitions 5/128 dead transitions. [2024-10-11 20:00:12,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 128 transitions, 1122 flow [2024-10-11 20:00:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 20:00:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 20:00:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-10-11 20:00:12,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-10-11 20:00:12,863 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 707 flow. Second operand 12 states and 164 transitions. [2024-10-11 20:00:12,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 128 transitions, 1122 flow [2024-10-11 20:00:12,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 128 transitions, 1072 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-10-11 20:00:12,872 INFO L231 Difference]: Finished difference. Result has 119 places, 100 transitions, 838 flow [2024-10-11 20:00:12,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=838, PETRI_PLACES=119, PETRI_TRANSITIONS=100} [2024-10-11 20:00:12,873 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2024-10-11 20:00:12,873 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 838 flow [2024-10-11 20:00:12,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:12,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:12,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:12,877 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 (14)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:13,074 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 20:00:13,074 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:13,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1282154521, now seen corresponding path program 6 times [2024-10-11 20:00:13,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:13,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095215219] [2024-10-11 20:00:13,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 20:00:13,079 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 20:00:13,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:13,092 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 20:00:13,093 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 20:00:13,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-11 20:00:13,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:13,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:00:13,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:13,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:13,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095215219] [2024-10-11 20:00:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095215219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:13,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:13,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 20:00:13,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540209295] [2024-10-11 20:00:13,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:13,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:00:13,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:13,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:00:13,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:00:13,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 20:00:13,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 838 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:13,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:13,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 20:00:13,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:13,995 INFO L124 PetriNetUnfolderBase]: 761/1621 cut-off events. [2024-10-11 20:00:13,995 INFO L125 PetriNetUnfolderBase]: For 6082/6082 co-relation queries the response was YES. [2024-10-11 20:00:13,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6525 conditions, 1621 events. 761/1621 cut-off events. For 6082/6082 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9980 event pairs, 198 based on Foata normal form. 3/1624 useless extension candidates. Maximal degree in co-relation 6460. Up to 1228 conditions per place. [2024-10-11 20:00:14,004 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 88 selfloop transitions, 31 changer transitions 3/126 dead transitions. [2024-10-11 20:00:14,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 1216 flow [2024-10-11 20:00:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 20:00:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 20:00:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-10-11 20:00:14,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33181818181818185 [2024-10-11 20:00:14,007 INFO L175 Difference]: Start difference. First operand has 119 places, 100 transitions, 838 flow. Second operand 11 states and 146 transitions. [2024-10-11 20:00:14,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 126 transitions, 1216 flow [2024-10-11 20:00:14,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1116 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-10-11 20:00:14,019 INFO L231 Difference]: Finished difference. Result has 128 places, 106 transitions, 901 flow [2024-10-11 20:00:14,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=901, PETRI_PLACES=128, PETRI_TRANSITIONS=106} [2024-10-11 20:00:14,019 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 88 predicate places. [2024-10-11 20:00:14,020 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 106 transitions, 901 flow [2024-10-11 20:00:14,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:14,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:14,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:14,031 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 (15)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:14,221 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 20:00:14,221 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:14,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1351660687, now seen corresponding path program 7 times [2024-10-11 20:00:14,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:14,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007333997] [2024-10-11 20:00:14,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 20:00:14,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:00:14,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:14,223 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 20:00:14,225 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 20:00:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:14,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:00:14,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:14,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:14,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:14,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007333997] [2024-10-11 20:00:14,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007333997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:14,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:14,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 20:00:14,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850331621] [2024-10-11 20:00:14,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:14,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:00:14,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:14,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:00:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:00:14,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 20:00:14,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 106 transitions, 901 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:14,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:14,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 20:00:14,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:15,023 INFO L124 PetriNetUnfolderBase]: 836/1780 cut-off events. [2024-10-11 20:00:15,024 INFO L125 PetriNetUnfolderBase]: For 7612/7612 co-relation queries the response was YES. [2024-10-11 20:00:15,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7275 conditions, 1780 events. 836/1780 cut-off events. For 7612/7612 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11161 event pairs, 207 based on Foata normal form. 3/1783 useless extension candidates. Maximal degree in co-relation 7204. Up to 1342 conditions per place. [2024-10-11 20:00:15,050 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 91 selfloop transitions, 31 changer transitions 5/131 dead transitions. [2024-10-11 20:00:15,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 1277 flow [2024-10-11 20:00:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 20:00:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 20:00:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-10-11 20:00:15,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3386363636363636 [2024-10-11 20:00:15,052 INFO L175 Difference]: Start difference. First operand has 128 places, 106 transitions, 901 flow. Second operand 11 states and 149 transitions. [2024-10-11 20:00:15,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 1277 flow [2024-10-11 20:00:15,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 131 transitions, 1193 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-10-11 20:00:15,074 INFO L231 Difference]: Finished difference. Result has 136 places, 109 transitions, 932 flow [2024-10-11 20:00:15,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=932, PETRI_PLACES=136, PETRI_TRANSITIONS=109} [2024-10-11 20:00:15,075 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 96 predicate places. [2024-10-11 20:00:15,075 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 109 transitions, 932 flow [2024-10-11 20:00:15,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:15,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:15,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:15,083 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 (16)] Ended with exit code 0 [2024-10-11 20:00:15,276 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 20:00:15,276 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:15,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2112975087, now seen corresponding path program 8 times [2024-10-11 20:00:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431430671] [2024-10-11 20:00:15,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:15,277 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 20:00:15,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:15,278 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 20:00:15,278 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 20:00:15,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:00:15,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:15,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:00:15,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:15,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:15,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:15,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431430671] [2024-10-11 20:00:15,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431430671] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:15,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:15,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 20:00:15,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81783965] [2024-10-11 20:00:15,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:15,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:00:15,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:15,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:00:15,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:00:15,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 20:00:15,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 109 transitions, 932 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:15,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:15,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 20:00:15,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:16,035 INFO L124 PetriNetUnfolderBase]: 872/1882 cut-off events. [2024-10-11 20:00:16,035 INFO L125 PetriNetUnfolderBase]: For 6706/6706 co-relation queries the response was YES. [2024-10-11 20:00:16,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7490 conditions, 1882 events. 872/1882 cut-off events. For 6706/6706 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12098 event pairs, 252 based on Foata normal form. 3/1885 useless extension candidates. Maximal degree in co-relation 7418. Up to 1489 conditions per place. [2024-10-11 20:00:16,045 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 93 selfloop transitions, 30 changer transitions 3/130 dead transitions. [2024-10-11 20:00:16,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 130 transitions, 1266 flow [2024-10-11 20:00:16,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 20:00:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 20:00:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-10-11 20:00:16,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-10-11 20:00:16,046 INFO L175 Difference]: Start difference. First operand has 136 places, 109 transitions, 932 flow. Second operand 11 states and 145 transitions. [2024-10-11 20:00:16,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 130 transitions, 1266 flow [2024-10-11 20:00:16,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 130 transitions, 1193 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-10-11 20:00:16,060 INFO L231 Difference]: Finished difference. Result has 142 places, 111 transitions, 952 flow [2024-10-11 20:00:16,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=952, PETRI_PLACES=142, PETRI_TRANSITIONS=111} [2024-10-11 20:00:16,060 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 102 predicate places. [2024-10-11 20:00:16,060 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 111 transitions, 952 flow [2024-10-11 20:00:16,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:16,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:16,061 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:16,064 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 20:00:16,263 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 20:00:16,264 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:16,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:16,264 INFO L85 PathProgramCache]: Analyzing trace with hash 609594811, now seen corresponding path program 9 times [2024-10-11 20:00:16,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:16,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240928490] [2024-10-11 20:00:16,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:00:16,264 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 20:00:16,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:16,267 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 20:00:16,267 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 20:00:16,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 20:00:16,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:16,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:00:16,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:16,590 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:16,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240928490] [2024-10-11 20:00:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240928490] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:16,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:16,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 20:00:16,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163262426] [2024-10-11 20:00:16,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:16,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:00:16,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:00:16,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:00:16,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 20:00:16,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 111 transitions, 952 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:16,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:16,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 20:00:16,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:16,965 INFO L124 PetriNetUnfolderBase]: 947/2035 cut-off events. [2024-10-11 20:00:16,965 INFO L125 PetriNetUnfolderBase]: For 7579/7579 co-relation queries the response was YES. [2024-10-11 20:00:16,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 2035 events. 947/2035 cut-off events. For 7579/7579 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13309 event pairs, 276 based on Foata normal form. 3/2035 useless extension candidates. Maximal degree in co-relation 8051. Up to 1588 conditions per place. [2024-10-11 20:00:16,976 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 95 selfloop transitions, 30 changer transitions 5/134 dead transitions. [2024-10-11 20:00:16,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 134 transitions, 1331 flow [2024-10-11 20:00:16,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 20:00:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 20:00:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-10-11 20:00:16,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-10-11 20:00:16,978 INFO L175 Difference]: Start difference. First operand has 142 places, 111 transitions, 952 flow. Second operand 11 states and 150 transitions. [2024-10-11 20:00:16,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 134 transitions, 1331 flow [2024-10-11 20:00:16,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 134 transitions, 1259 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-10-11 20:00:16,996 INFO L231 Difference]: Finished difference. Result has 146 places, 114 transitions, 995 flow [2024-10-11 20:00:16,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=995, PETRI_PLACES=146, PETRI_TRANSITIONS=114} [2024-10-11 20:00:16,996 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 106 predicate places. [2024-10-11 20:00:16,996 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 114 transitions, 995 flow [2024-10-11 20:00:16,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 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 20:00:16,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:16,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:17,005 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 (18)] Ended with exit code 0 [2024-10-11 20:00:17,197 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 20:00:17,197 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:17,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1021910651, now seen corresponding path program 10 times [2024-10-11 20:00:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:17,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778855589] [2024-10-11 20:00:17,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:00:17,198 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 20:00:17,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:17,199 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 20:00:17,200 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 20:00:17,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:00:17,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:17,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 20:00:17,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:17,454 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:17,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:17,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778855589] [2024-10-11 20:00:17,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778855589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:17,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:17,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 20:00:17,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524290874] [2024-10-11 20:00:17,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:17,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:00:17,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:17,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:00:17,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:00:17,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 20:00:17,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 114 transitions, 995 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 20:00:17,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:17,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 20:00:17,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:17,921 INFO L124 PetriNetUnfolderBase]: 908/2035 cut-off events. [2024-10-11 20:00:17,921 INFO L125 PetriNetUnfolderBase]: For 8443/8443 co-relation queries the response was YES. [2024-10-11 20:00:17,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8179 conditions, 2035 events. 908/2035 cut-off events. For 8443/8443 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13857 event pairs, 282 based on Foata normal form. 3/2017 useless extension candidates. Maximal degree in co-relation 8102. Up to 1339 conditions per place. [2024-10-11 20:00:17,936 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 87 selfloop transitions, 39 changer transitions 5/136 dead transitions. [2024-10-11 20:00:17,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 136 transitions, 1371 flow [2024-10-11 20:00:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:00:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:00:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-10-11 20:00:17,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-10-11 20:00:17,938 INFO L175 Difference]: Start difference. First operand has 146 places, 114 transitions, 995 flow. Second operand 10 states and 154 transitions. [2024-10-11 20:00:17,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 136 transitions, 1371 flow [2024-10-11 20:00:17,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 136 transitions, 1280 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-10-11 20:00:17,954 INFO L231 Difference]: Finished difference. Result has 151 places, 119 transitions, 1055 flow [2024-10-11 20:00:17,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1055, PETRI_PLACES=151, PETRI_TRANSITIONS=119} [2024-10-11 20:00:17,955 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 111 predicate places. [2024-10-11 20:00:17,955 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 119 transitions, 1055 flow [2024-10-11 20:00:17,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 20:00:17,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:17,955 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 20:00:17,959 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 (19)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:18,157 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 20:00:18,158 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:18,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash -366624145, now seen corresponding path program 3 times [2024-10-11 20:00:18,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:18,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315495836] [2024-10-11 20:00:18,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:00:18,159 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 20:00:18,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:18,159 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 20:00:18,160 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 20:00:18,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 20:00:18,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:18,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:00:18,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:18,312 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 20:00:18,663 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 20:00:18,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:20,095 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 20:00:20,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:20,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315495836] [2024-10-11 20:00:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315495836] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:20,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:20,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 20:00:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610792249] [2024-10-11 20:00:20,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:20,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 20:00:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 20:00:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 20:00:20,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 20:00:20,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 119 transitions, 1055 flow. Second operand has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 26 states have internal predecessors, (280), 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 20:00:20,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:20,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 20:00:20,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:31,389 INFO L124 PetriNetUnfolderBase]: 791/1873 cut-off events. [2024-10-11 20:00:31,390 INFO L125 PetriNetUnfolderBase]: For 9387/9405 co-relation queries the response was YES. [2024-10-11 20:00:31,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8001 conditions, 1873 events. 791/1873 cut-off events. For 9387/9405 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12800 event pairs, 525 based on Foata normal form. 12/1864 useless extension candidates. Maximal degree in co-relation 7917. Up to 1497 conditions per place. [2024-10-11 20:00:31,399 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 84 selfloop transitions, 66 changer transitions 0/155 dead transitions. [2024-10-11 20:00:31,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 155 transitions, 1667 flow [2024-10-11 20:00:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-11 20:00:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-11 20:00:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 513 transitions. [2024-10-11 20:00:31,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27880434782608693 [2024-10-11 20:00:31,401 INFO L175 Difference]: Start difference. First operand has 151 places, 119 transitions, 1055 flow. Second operand 46 states and 513 transitions. [2024-10-11 20:00:31,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 155 transitions, 1667 flow [2024-10-11 20:00:31,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 155 transitions, 1582 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-11 20:00:31,420 INFO L231 Difference]: Finished difference. Result has 199 places, 155 transitions, 1468 flow [2024-10-11 20:00:31,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=142, 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=46, PETRI_FLOW=1468, PETRI_PLACES=199, PETRI_TRANSITIONS=155} [2024-10-11 20:00:31,421 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 159 predicate places. [2024-10-11 20:00:31,421 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 155 transitions, 1468 flow [2024-10-11 20:00:31,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 26 states have internal predecessors, (280), 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 20:00:31,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:31,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:31,429 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 (20)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:31,625 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 20:00:31,625 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:31,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash -622766776, now seen corresponding path program 1 times [2024-10-11 20:00:31,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:31,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798435237] [2024-10-11 20:00:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:31,626 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 20:00:31,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:31,627 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 20:00:31,628 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 20:00:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:31,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:00:31,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:31,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:31,826 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-11 20:00:31,826 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 28 [2024-10-11 20:00:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:31,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:31,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798435237] [2024-10-11 20:00:31,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798435237] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:31,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:31,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-11 20:00:31,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88716501] [2024-10-11 20:00:31,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:31,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:00:31,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:31,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:00:31,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:00:31,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 20:00:31,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 155 transitions, 1468 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 20:00:31,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:31,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 20:00:31,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:32,316 INFO L124 PetriNetUnfolderBase]: 1169/2530 cut-off events. [2024-10-11 20:00:32,316 INFO L125 PetriNetUnfolderBase]: For 12109/12109 co-relation queries the response was YES. [2024-10-11 20:00:32,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10316 conditions, 2530 events. 1169/2530 cut-off events. For 12109/12109 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16837 event pairs, 213 based on Foata normal form. 33/2560 useless extension candidates. Maximal degree in co-relation 10200. Up to 1297 conditions per place. [2024-10-11 20:00:32,330 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 173 selfloop transitions, 14 changer transitions 0/191 dead transitions. [2024-10-11 20:00:32,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 191 transitions, 2063 flow [2024-10-11 20:00:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:00:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:00:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-10-11 20:00:32,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-11 20:00:32,331 INFO L175 Difference]: Start difference. First operand has 199 places, 155 transitions, 1468 flow. Second operand 6 states and 108 transitions. [2024-10-11 20:00:32,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 191 transitions, 2063 flow [2024-10-11 20:00:32,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 191 transitions, 1901 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-11 20:00:32,354 INFO L231 Difference]: Finished difference. Result has 185 places, 159 transitions, 1408 flow [2024-10-11 20:00:32,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1408, PETRI_PLACES=185, PETRI_TRANSITIONS=159} [2024-10-11 20:00:32,354 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 145 predicate places. [2024-10-11 20:00:32,354 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 159 transitions, 1408 flow [2024-10-11 20:00:32,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 20:00:32,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:32,355 INFO L204 CegarLoopForPetriNet]: trace histogram [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 20:00:32,361 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 (21)] Ended with exit code 0 [2024-10-11 20:00:32,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 20:00:32,555 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:32,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1701060505, now seen corresponding path program 1 times [2024-10-11 20:00:32,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:32,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323130046] [2024-10-11 20:00:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:32,556 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 20:00:32,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:32,557 INFO L229 MonitoredProcess]: Starting monitored process 22 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 20:00:32,558 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 (22)] Waiting until timeout for monitored process [2024-10-11 20:00:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:32,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:00:32,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:00:32,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:32,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:32,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323130046] [2024-10-11 20:00:32,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323130046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:32,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:32,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:00:32,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407322022] [2024-10-11 20:00:32,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:32,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:00:32,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:00:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:00:32,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 20:00:32,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 159 transitions, 1408 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 20:00:32,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:32,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 20:00:32,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:33,016 INFO L124 PetriNetUnfolderBase]: 920/1999 cut-off events. [2024-10-11 20:00:33,016 INFO L125 PetriNetUnfolderBase]: For 12190/12190 co-relation queries the response was YES. [2024-10-11 20:00:33,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8897 conditions, 1999 events. 920/1999 cut-off events. For 12190/12190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12192 event pairs, 264 based on Foata normal form. 99/2095 useless extension candidates. Maximal degree in co-relation 8795. Up to 820 conditions per place. [2024-10-11 20:00:33,026 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 108 selfloop transitions, 5 changer transitions 45/162 dead transitions. [2024-10-11 20:00:33,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 162 transitions, 1717 flow [2024-10-11 20:00:33,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:00:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:00:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-10-11 20:00:33,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-10-11 20:00:33,027 INFO L175 Difference]: Start difference. First operand has 185 places, 159 transitions, 1408 flow. Second operand 5 states and 87 transitions. [2024-10-11 20:00:33,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 162 transitions, 1717 flow [2024-10-11 20:00:33,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 162 transitions, 1639 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-10-11 20:00:33,051 INFO L231 Difference]: Finished difference. Result has 186 places, 107 transitions, 895 flow [2024-10-11 20:00:33,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=186, PETRI_TRANSITIONS=107} [2024-10-11 20:00:33,051 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 146 predicate places. [2024-10-11 20:00:33,051 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 107 transitions, 895 flow [2024-10-11 20:00:33,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 20:00:33,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:33,052 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 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 20:00:33,055 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 (22)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:33,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 20:00:33,252 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:33,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash -242015340, now seen corresponding path program 1 times [2024-10-11 20:00:33,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:33,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550412906] [2024-10-11 20:00:33,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:33,255 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 20:00:33,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:33,258 INFO L229 MonitoredProcess]: Starting monitored process 23 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 20:00:33,258 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 (23)] Waiting until timeout for monitored process [2024-10-11 20:00:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:33,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:00:33,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:33,346 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 20:00:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:00:33,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:00:33,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:33,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550412906] [2024-10-11 20:00:33,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550412906] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:33,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:33,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-11 20:00:33,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664832777] [2024-10-11 20:00:33,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:33,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 20:00:33,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:33,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 20:00:33,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-11 20:00:33,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-11 20:00:33,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 107 transitions, 895 flow. Second operand has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 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 20:00:33,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:33,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-11 20:00:33,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:34,311 INFO L124 PetriNetUnfolderBase]: 399/939 cut-off events. [2024-10-11 20:00:34,311 INFO L125 PetriNetUnfolderBase]: For 3287/3287 co-relation queries the response was YES. [2024-10-11 20:00:34,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 939 events. 399/939 cut-off events. For 3287/3287 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4660 event pairs, 226 based on Foata normal form. 32/964 useless extension candidates. Maximal degree in co-relation 3709. Up to 580 conditions per place. [2024-10-11 20:00:34,317 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 54 selfloop transitions, 46 changer transitions 29/135 dead transitions. [2024-10-11 20:00:34,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 135 transitions, 1372 flow [2024-10-11 20:00:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 20:00:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 20:00:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-10-11 20:00:34,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-10-11 20:00:34,318 INFO L175 Difference]: Start difference. First operand has 186 places, 107 transitions, 895 flow. Second operand 8 states and 117 transitions. [2024-10-11 20:00:34,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 135 transitions, 1372 flow [2024-10-11 20:00:34,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 1222 flow, removed 38 selfloop flow, removed 22 redundant places. [2024-10-11 20:00:34,329 INFO L231 Difference]: Finished difference. Result has 140 places, 106 transitions, 884 flow [2024-10-11 20:00:34,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=884, PETRI_PLACES=140, PETRI_TRANSITIONS=106} [2024-10-11 20:00:34,330 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 100 predicate places. [2024-10-11 20:00:34,330 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 106 transitions, 884 flow [2024-10-11 20:00:34,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 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 20:00:34,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:34,330 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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 20:00:34,333 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 (23)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:34,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 20:00:34,531 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:34,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1891889626, now seen corresponding path program 2 times [2024-10-11 20:00:34,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:34,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191831735] [2024-10-11 20:00:34,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:34,531 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 20:00:34,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:34,533 INFO L229 MonitoredProcess]: Starting monitored process 24 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 20:00:34,533 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 (24)] Waiting until timeout for monitored process [2024-10-11 20:00:34,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:00:34,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:34,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:00:34,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:00:35,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:35,866 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-11 20:00:35,866 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 94 treesize of output 72 [2024-10-11 20:00:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:00:36,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:36,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191831735] [2024-10-11 20:00:36,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191831735] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:36,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:36,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-10-11 20:00:36,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343273718] [2024-10-11 20:00:36,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:36,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 20:00:36,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 20:00:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2024-10-11 20:00:36,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 20:00:36,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 106 transitions, 884 flow. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 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 20:00:36,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:36,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 20:00:36,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:38,604 INFO L124 PetriNetUnfolderBase]: 930/1797 cut-off events. [2024-10-11 20:00:38,604 INFO L125 PetriNetUnfolderBase]: For 2310/2310 co-relation queries the response was YES. [2024-10-11 20:00:38,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 1797 events. 930/1797 cut-off events. For 2310/2310 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9488 event pairs, 18 based on Foata normal form. 4/1801 useless extension candidates. Maximal degree in co-relation 5667. Up to 775 conditions per place. [2024-10-11 20:00:38,612 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 131 selfloop transitions, 78 changer transitions 9/221 dead transitions. [2024-10-11 20:00:38,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 221 transitions, 1787 flow [2024-10-11 20:00:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 20:00:38,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 20:00:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 300 transitions. [2024-10-11 20:00:38,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32608695652173914 [2024-10-11 20:00:38,614 INFO L175 Difference]: Start difference. First operand has 140 places, 106 transitions, 884 flow. Second operand 23 states and 300 transitions. [2024-10-11 20:00:38,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 221 transitions, 1787 flow [2024-10-11 20:00:38,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 221 transitions, 1701 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-10-11 20:00:38,623 INFO L231 Difference]: Finished difference. Result has 161 places, 154 transitions, 1327 flow [2024-10-11 20:00:38,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1327, PETRI_PLACES=161, PETRI_TRANSITIONS=154} [2024-10-11 20:00:38,624 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 121 predicate places. [2024-10-11 20:00:38,624 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 154 transitions, 1327 flow [2024-10-11 20:00:38,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 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 20:00:38,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:38,624 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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 20:00:38,628 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 (24)] Ended with exit code 0 [2024-10-11 20:00:38,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 20:00:38,825 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:38,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:38,825 INFO L85 PathProgramCache]: Analyzing trace with hash 198941118, now seen corresponding path program 3 times [2024-10-11 20:00:38,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:38,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286122889] [2024-10-11 20:00:38,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:00:38,826 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 20:00:38,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:38,827 INFO L229 MonitoredProcess]: Starting monitored process 25 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 20:00:38,827 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 (25)] Waiting until timeout for monitored process [2024-10-11 20:00:38,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 20:00:38,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:38,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:00:38,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:00:39,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:40,230 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-11 20:00:40,230 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 94 treesize of output 72 [2024-10-11 20:00:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:00:40,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:40,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286122889] [2024-10-11 20:00:40,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286122889] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:40,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:40,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-10-11 20:00:40,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867046602] [2024-10-11 20:00:40,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:40,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 20:00:40,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:40,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 20:00:40,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2024-10-11 20:00:40,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 20:00:40,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 154 transitions, 1327 flow. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 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 20:00:40,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:40,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 20:00:40,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:42,736 INFO L124 PetriNetUnfolderBase]: 996/1951 cut-off events. [2024-10-11 20:00:42,736 INFO L125 PetriNetUnfolderBase]: For 4948/4948 co-relation queries the response was YES. [2024-10-11 20:00:42,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7578 conditions, 1951 events. 996/1951 cut-off events. For 4948/4948 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 10849 event pairs, 32 based on Foata normal form. 2/1953 useless extension candidates. Maximal degree in co-relation 7527. Up to 945 conditions per place. [2024-10-11 20:00:42,744 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 135 selfloop transitions, 93 changer transitions 5/236 dead transitions. [2024-10-11 20:00:42,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 236 transitions, 2166 flow [2024-10-11 20:00:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 20:00:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 20:00:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 294 transitions. [2024-10-11 20:00:42,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31956521739130433 [2024-10-11 20:00:42,746 INFO L175 Difference]: Start difference. First operand has 161 places, 154 transitions, 1327 flow. Second operand 23 states and 294 transitions. [2024-10-11 20:00:42,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 236 transitions, 2166 flow [2024-10-11 20:00:42,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 236 transitions, 2031 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-11 20:00:42,762 INFO L231 Difference]: Finished difference. Result has 183 places, 177 transitions, 1655 flow [2024-10-11 20:00:42,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1655, PETRI_PLACES=183, PETRI_TRANSITIONS=177} [2024-10-11 20:00:42,763 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 143 predicate places. [2024-10-11 20:00:42,763 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 177 transitions, 1655 flow [2024-10-11 20:00:42,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 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 20:00:42,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:42,763 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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 20:00:42,768 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 (25)] Ended with exit code 0 [2024-10-11 20:00:42,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 20:00:42,963 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:42,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1669479410, now seen corresponding path program 4 times [2024-10-11 20:00:42,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:42,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035294761] [2024-10-11 20:00:42,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:00:42,964 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 20:00:42,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:42,965 INFO L229 MonitoredProcess]: Starting monitored process 26 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 20:00:42,966 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 (26)] Waiting until timeout for monitored process [2024-10-11 20:00:43,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:00:43,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:43,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:00:43,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:00:43,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:44,269 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-11 20:00:44,269 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 94 treesize of output 72 [2024-10-11 20:00:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 20:00:44,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:44,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035294761] [2024-10-11 20:00:44,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035294761] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:44,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:44,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-10-11 20:00:44,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206012642] [2024-10-11 20:00:44,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:44,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 20:00:44,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:44,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 20:00:44,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-10-11 20:00:44,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 20:00:44,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 177 transitions, 1655 flow. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 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 20:00:44,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:44,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 20:00:44,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:46,976 INFO L124 PetriNetUnfolderBase]: 1036/2069 cut-off events. [2024-10-11 20:00:46,977 INFO L125 PetriNetUnfolderBase]: For 7948/7948 co-relation queries the response was YES. [2024-10-11 20:00:46,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8708 conditions, 2069 events. 1036/2069 cut-off events. For 7948/7948 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11978 event pairs, 40 based on Foata normal form. 2/2071 useless extension candidates. Maximal degree in co-relation 8654. Up to 939 conditions per place. [2024-10-11 20:00:46,988 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 132 selfloop transitions, 102 changer transitions 5/242 dead transitions. [2024-10-11 20:00:46,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 242 transitions, 2413 flow [2024-10-11 20:00:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 20:00:46,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 20:00:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 260 transitions. [2024-10-11 20:00:46,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-10-11 20:00:46,989 INFO L175 Difference]: Start difference. First operand has 183 places, 177 transitions, 1655 flow. Second operand 20 states and 260 transitions. [2024-10-11 20:00:46,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 242 transitions, 2413 flow [2024-10-11 20:00:47,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 242 transitions, 2234 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-10-11 20:00:47,015 INFO L231 Difference]: Finished difference. Result has 192 places, 187 transitions, 1851 flow [2024-10-11 20:00:47,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1851, PETRI_PLACES=192, PETRI_TRANSITIONS=187} [2024-10-11 20:00:47,016 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 152 predicate places. [2024-10-11 20:00:47,016 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 187 transitions, 1851 flow [2024-10-11 20:00:47,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 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 20:00:47,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:47,016 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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 20:00:47,020 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 (26)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:47,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 20:00:47,217 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-11 20:00:47,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1564052236, now seen corresponding path program 5 times [2024-10-11 20:00:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:47,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457839684] [2024-10-11 20:00:47,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 20:00:47,217 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 20:00:47,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:47,218 INFO L229 MonitoredProcess]: Starting monitored process 27 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 20:00:47,221 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 (27)] Waiting until timeout for monitored process [2024-10-11 20:00:47,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 20:00:47,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:47,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-11 20:00:47,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:47,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-10-11 20:00:47,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 20:00:47,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 21 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 58 [2024-10-11 20:00:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:49,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:56,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 644 treesize of output 628